시간 제한메모리 제한제출정답맞힌 사람정답 비율
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문제

Alice는 정수 배열을 이용한 구간합 놀이를 즐겨하는데, 아래와 같은 순서로 게임을 진행한다.

  • 먼저, 길이 $n$인 정수 배열 $A$를 만든다. $A$의 원소가 $A[1]$, $\dots$, $A[n]$이라 했을 때 이 $n$개의 값은 모두 달라야 한다.
  • 다음으로, 배열 $A$의 구간을 나타내는 $m$개의 정수 쌍 $(x[1], y[1])$, $\dots$, $(x[m], y[m])$을 고른다. 이 때 $1 ≤ x[i] ≤ y[i] ≤ n$ 을 만족해야한다.
  • 배열 $A$와 $x$, $y$를 이용하여 구간합 $S(A, x, y)$을 다음과 같이 정의한다: $S(A, x, y) := \sum_{1 \le j \le m} ( \sum_{x[j] \le i \le y[j]} A[i] )$
  • 이 게임의 목표는 배열 $A$의 원소를 임의로 재배열하여 $S(A, x, y)$값을 최대로 만드는 것이다. $A$의 원소가 $n$개이므로 총 $n!$ 가지의 방법으로 $A$의 원소를 재배열할 수 있다.

예를 들어, $n = 3$, $m = 2$, $A = [10, 100, 1000]$ 이고 $x = [1, 2]$, $y = [2, 2]$라 하자. $n = 3$ 이므로 $A$의 원소를 재배열하여 얻을 수 있는 배열은 총 여섯 종류가 있다. 원래의 배열 $A$와 구분하기 위해 이를 배열 $B$라 하자.

  • $B = [10, 100, 1000]$ 일 때, $S(B, x, y) = (10 + 100) + (100) = 210$.
  • $B = [10, 1000, 100]$ 일 때, $S(B, x, y) = (10 + 1000) + (1000) = 2010$.
  • $B = [100, 10, 1000]$ 일 때, $S(B, x, y) = (100 + 10) + (10) = 120$.
  • $B = [100, 1000, 10]$ 일 때, $S(B, x, y) = (100 + 1000) + (1000) = 2100$.
  • $B = [1000, 10, 100]$ 일 때, $S(B, x, y) = (1000 + 10) + (10) = 1020$.
  • $B = [1000, 100, 10]$ 일 때, $S(B, x, y) = (1000 + 100) + (100) = 1200$.

이 경우 $S(A, x, y)$의 최댓값은 $2100$이며, 네 번째 경우인 $B = [100, 1000, 10]$를 통해 얻을 수 있다.

다른 예로, $n = 2$, $m = 1$, $A = [20, 22]$ 이고 $x = [1]$, $y = [2]$라 하자. $n = 2$ 이므로 $A$의 원소를 재배열하여 얻을 수 있는 배열은 총 두 종류가 있다. 원래의 배열 $A$와 구분하기 위해 이를 배열 $B$라 하자.

  • $B = [20, 22]$ 일 때, $S(B, x, y) = (20 + 22) = 42$.
  • $B = [22, 20]$ 일 때, $S(B, x, y) = (22 + 20) = 42$.

이 경우 $S(A, x, y)$의 최댓값은 $42$이며, 두 가지 다른 방법을 통해 얻을 수 있다.

$A$, $x$, $y$가 주어졌을 때 Alice가 $A$의 원소를 재배열하여 달성할 수 있는 $S(A, x, y)$의 최댓값을 구하고, 몇 가지 다른 방법으로 최댓값을 달성할 수 있는지 구해보자.

입력

첫 줄에 테스트 케이스의 수 $T$가 주어진다.

각 테스트 케이스의 입력 첫 줄에 $n$, $m$이 공백으로 구분되어 주어진다. 둘째 줄에는 배열 $A$의 원소 $n$개가 공백으로 구분되어 주어진다. 다음 $m$줄에 걸쳐 각 줄에 두 개의 정수 $x[i]$와 $y[i]$가 공백으로 구분되어 주어진다.

출력

각 테스트 케이스의 정답인 Alice가 달성할 수 있는 $S(A, x, y)$의 최댓값, 그리고 이를 달성할 수 있는 방법의 수를 공백으로 구분하여 출력한다. 단, 방법의 수가 매우 커질 수 있으므로 $10^9+7$로 나눈 나머지를 출력한다.

제한

  • $1 ≤ T ≤ 10$
  • $1 ≤ n ≤ 50\,000$
  • $1 ≤ m ≤ 200\,000$
  • $1 ≤ A$의 원소 $≤ 10^8$
  • 배열 $A$의 원소는 고유하다
  • $1 ≤ i ≤ m$인 정수 $i$에 대하여 $1 ≤ x[i] ≤ y[i] ≤ n$

예제 입력 1

6
3 2
10 100 1000
1 2
2 2
2 1
20 22
1 2
5 3
1 3 5 7 9
1 2
2 3
3 4
6 1
1 2 3 100 200 300
1 2
7 7
100000000 99999999 99999998 99999997 99999996 99999995 99999994
1 7
2 7
3 7
4 7
5 7
6 7
7 7
13 1
1 2 3 4 5 6 7 8 9 10 11 12 13
1 13

예제 출력 1

2100 1
42 2
40 4
500 48
2799999944 1
91 227020758
  • 예제 1-2: 본문에서 다루었다
  • 예제 3-4: 추가 설명 없음
  • 예제 5: 최댓값은 32-bit integer 범위를 넘어감에 주의하자.
  • 예제 6: 최댓값을 달성할 수 있는 방법의 수는 매우 커질 수 있으므로 ($10^9+7$)로 나눈 나머지를 출력해야한다.
[{"problem_id":"24838","problem_lang":"0","title":"\ubc30\uc5f4 \uad6c\uac04\ud569 \ub180\uc774","description":"<p>Alice\ub294 \uc815\uc218 \ubc30\uc5f4\uc744 \uc774\uc6a9\ud55c \uad6c\uac04\ud569 \ub180\uc774\ub97c \uc990\uaca8\ud558\ub294\ub370, \uc544\ub798\uc640 \uac19\uc740 \uc21c\uc11c\ub85c \uac8c\uc784\uc744 \uc9c4\ud589\ud55c\ub2e4.<\/p>\r\n\r\n<ul>\r\n\t<li>\uba3c\uc800, \uae38\uc774 $n$\uc778 \uc815\uc218 \ubc30\uc5f4 $A$\ub97c \ub9cc\ub4e0\ub2e4. $A$\uc758 \uc6d0\uc18c\uac00 $A[1]$, $\\dots$, $A[n]$\uc774\ub77c \ud588\uc744 \ub54c \uc774 $n$\uac1c\uc758 \uac12\uc740 \ubaa8\ub450 \ub2ec\ub77c\uc57c \ud55c\ub2e4.<\/li>\r\n\t<li>\ub2e4\uc74c\uc73c\ub85c, \ubc30\uc5f4 $A$\uc758 \uad6c\uac04\uc744 \ub098\ud0c0\ub0b4\ub294 $m$\uac1c\uc758 \uc815\uc218 \uc30d $(x[1], y[1])$, $\\dots$, $(x[m], y[m])$\uc744 \uace0\ub978\ub2e4. \uc774 \ub54c $1 &le; x[i] &le; y[i] &le; n$ \uc744 \ub9cc\uc871\ud574\uc57c\ud55c\ub2e4.<\/li>\r\n\t<li>\ubc30\uc5f4 $A$\uc640 $x$, $y$\ub97c \uc774\uc6a9\ud558\uc5ec \uad6c\uac04\ud569 $S(A, x, y)$\uc744 \ub2e4\uc74c\uacfc \uac19\uc774 \uc815\uc758\ud55c\ub2e4: $S(A, x, y) := \\sum_{1 \\le j \\le m} ( \\sum_{x[j] \\le i \\le y[j]} A[i] )$<\/li>\r\n\t<li>\uc774 \uac8c\uc784\uc758 \ubaa9\ud45c\ub294 \ubc30\uc5f4 $A$\uc758 \uc6d0\uc18c\ub97c \uc784\uc758\ub85c \uc7ac\ubc30\uc5f4\ud558\uc5ec $S(A, x, y)$\uac12\uc744 \ucd5c\ub300\ub85c \ub9cc\ub4dc\ub294 \uac83\uc774\ub2e4. $A$\uc758 \uc6d0\uc18c\uac00 $n$\uac1c\uc774\ubbc0\ub85c \ucd1d $n!$ \uac00\uc9c0\uc758 \ubc29\ubc95\uc73c\ub85c $A$\uc758 \uc6d0\uc18c\ub97c \uc7ac\ubc30\uc5f4\ud560 \uc218 \uc788\ub2e4.<\/li>\r\n<\/ul>\r\n\r\n<p>\uc608\ub97c \ub4e4\uc5b4, $n = 3$, $m = 2$, $A = [10, 100, 1000]$ \uc774\uace0 $x = [1, 2]$, $y = [2, 2]$\ub77c \ud558\uc790. $n = 3$ \uc774\ubbc0\ub85c $A$\uc758 \uc6d0\uc18c\ub97c \uc7ac\ubc30\uc5f4\ud558\uc5ec \uc5bb\uc744 \uc218 \uc788\ub294 \ubc30\uc5f4\uc740 \ucd1d \uc5ec\uc12f \uc885\ub958\uac00 \uc788\ub2e4. \uc6d0\ub798\uc758 \ubc30\uc5f4 $A$\uc640 \uad6c\ubd84\ud558\uae30 \uc704\ud574 \uc774\ub97c \ubc30\uc5f4 $B$\ub77c \ud558\uc790.<\/p>\r\n\r\n<ul>\r\n\t<li>$B = [10, 100, 1000]$ \uc77c \ub54c, $S(B, x, y) = (10 + 100) + (100) = 210$.<\/li>\r\n\t<li>$B = [10, 1000, 100]$ \uc77c \ub54c, $S(B, x, y) = (10 + 1000) + (1000) = 2010$.<\/li>\r\n\t<li>$B = [100, 10, 1000]$ \uc77c \ub54c, $S(B, x, y) = (100 + 10) + (10) = 120$.<\/li>\r\n\t<li>$B = [100, 1000, 10]$ \uc77c \ub54c, $S(B, x, y) = (100 + 1000) + (1000) = 2100$.<\/li>\r\n\t<li>$B = [1000, 10, 100]$ \uc77c \ub54c, $S(B, x, y) = (1000 + 10) + (10) = 1020$.<\/li>\r\n\t<li>$B = [1000, 100, 10]$ \uc77c \ub54c, $S(B, x, y) = (1000 + 100) + (100) = 1200$.<\/li>\r\n<\/ul>\r\n\r\n<p>\uc774 \uacbd\uc6b0 $S(A, x, y)$\uc758 \ucd5c\ub313\uac12\uc740 $2100$\uc774\uba70, \ub124 \ubc88\uc9f8 \uacbd\uc6b0\uc778 $B = [100, 1000, 10]$\ub97c \ud1b5\ud574 \uc5bb\uc744 \uc218 \uc788\ub2e4.<\/p>\r\n\r\n<p>\ub2e4\ub978 \uc608\ub85c, $n = 2$, $m = 1$, $A = [20, 22]$ \uc774\uace0 $x = [1]$, $y = [2]$\ub77c \ud558\uc790. $n = 2$ \uc774\ubbc0\ub85c $A$\uc758 \uc6d0\uc18c\ub97c \uc7ac\ubc30\uc5f4\ud558\uc5ec \uc5bb\uc744 \uc218 \uc788\ub294 \ubc30\uc5f4\uc740 \ucd1d \ub450 \uc885\ub958\uac00 \uc788\ub2e4. \uc6d0\ub798\uc758 \ubc30\uc5f4 $A$\uc640 \uad6c\ubd84\ud558\uae30 \uc704\ud574 \uc774\ub97c \ubc30\uc5f4 $B$\ub77c \ud558\uc790.<\/p>\r\n\r\n<ul>\r\n\t<li>$B = [20, 22]$ \uc77c \ub54c, $S(B, x, y) = (20 + 22) = 42$.<\/li>\r\n\t<li>$B = [22, 20]$ \uc77c \ub54c, $S(B, x, y) = (22 + 20) = 42$.<\/li>\r\n<\/ul>\r\n\r\n<p>\uc774 \uacbd\uc6b0 $S(A, x, y)$\uc758 \ucd5c\ub313\uac12\uc740 $42$\uc774\uba70, \ub450 \uac00\uc9c0 \ub2e4\ub978 \ubc29\ubc95\uc744 \ud1b5\ud574 \uc5bb\uc744 \uc218 \uc788\ub2e4.<\/p>\r\n\r\n<p>$A$, $x$, $y$\uac00 \uc8fc\uc5b4\uc84c\uc744 \ub54c Alice\uac00 $A$\uc758 \uc6d0\uc18c\ub97c \uc7ac\ubc30\uc5f4\ud558\uc5ec \ub2ec\uc131\ud560 \uc218 \uc788\ub294 $S(A, x, y)$\uc758 \ucd5c\ub313\uac12\uc744 \uad6c\ud558\uace0, \uba87 \uac00\uc9c0 \ub2e4\ub978 \ubc29\ubc95\uc73c\ub85c \ucd5c\ub313\uac12\uc744 \ub2ec\uc131\ud560 \uc218 \uc788\ub294\uc9c0 \uad6c\ud574\ubcf4\uc790.<\/p>\r\n\r\n<ul>\r\n<\/ul>\r\n","input":"<p>\uccab \uc904\uc5d0 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uc218 $T$\uac00 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n\r\n<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uc785\ub825 \uccab \uc904\uc5d0 $n$, $m$\uc774 \uacf5\ubc31\uc73c\ub85c \uad6c\ubd84\ub418\uc5b4 \uc8fc\uc5b4\uc9c4\ub2e4. \ub458\uc9f8 \uc904\uc5d0\ub294 \ubc30\uc5f4 $A$\uc758 \uc6d0\uc18c $n$\uac1c\uac00 \uacf5\ubc31\uc73c\ub85c \uad6c\ubd84\ub418\uc5b4 \uc8fc\uc5b4\uc9c4\ub2e4. \ub2e4\uc74c $m$\uc904\uc5d0 \uac78\uccd0 \uac01 \uc904\uc5d0 \ub450 \uac1c\uc758 \uc815\uc218 $x[i]$\uc640 $y[i]$\uac00 \uacf5\ubc31\uc73c\ub85c \uad6c\ubd84\ub418\uc5b4 \uc8fc\uc5b4\uc9c4\ub2e4.<\/p>\r\n","output":"<p>\uac01 \ud14c\uc2a4\ud2b8 \ucf00\uc774\uc2a4\uc758 \uc815\ub2f5\uc778 Alice\uac00 \ub2ec\uc131\ud560 \uc218 \uc788\ub294 $S(A, x, y)$\uc758 \ucd5c\ub313\uac12, \uadf8\ub9ac\uace0 \uc774\ub97c \ub2ec\uc131\ud560 \uc218 \uc788\ub294 \ubc29\ubc95\uc758 \uc218\ub97c \uacf5\ubc31\uc73c\ub85c \uad6c\ubd84\ud558\uc5ec \ucd9c\ub825\ud55c\ub2e4. \ub2e8, \ubc29\ubc95\uc758 \uc218\uac00 \ub9e4\uc6b0 \ucee4\uc9c8 \uc218 \uc788\uc73c\ubbc0\ub85c $10^9+7$\ub85c \ub098\ub208 \ub098\uba38\uc9c0\ub97c \ucd9c\ub825\ud55c\ub2e4.<\/p>\r\n","hint":"","original":"1","html_title":"0","problem_lang_tcode":"Korean","limit":"<ul>\r\n\t<li>$1 &le; T &le; 10$<\/li>\r\n\t<li>$1 &le; n &le; 50\\,000$<\/li>\r\n\t<li>$1 &le; m &le; 200\\,000$<\/li>\r\n\t<li>$1 &le; A$\uc758 \uc6d0\uc18c $&le; 10^8$<\/li>\r\n\t<li>\ubc30\uc5f4 $A$\uc758 \uc6d0\uc18c\ub294 \uace0\uc720\ud558\ub2e4<\/li>\r\n\t<li>$1 &le; i &le; m$\uc778 \uc815\uc218 $i$\uc5d0 \ub300\ud558\uc5ec $1 &le; x[i] &le; y[i] &le; n$<\/li>\r\n<\/ul>\r\n","sample_explain_1":"<ul>\r\n\t<li>\uc608\uc81c 1-2: \ubcf8\ubb38\uc5d0\uc11c \ub2e4\ub8e8\uc5c8\ub2e4<\/li>\r\n\t<li>\uc608\uc81c 3-4: \ucd94\uac00 \uc124\uba85 \uc5c6\uc74c<\/li>\r\n\t<li>\uc608\uc81c 5: \ucd5c\ub313\uac12\uc740 32-bit integer \ubc94\uc704\ub97c \ub118\uc5b4\uac10\uc5d0 \uc8fc\uc758\ud558\uc790.<\/li>\r\n\t<li>\uc608\uc81c 6: \ucd5c\ub313\uac12\uc744 \ub2ec\uc131\ud560 \uc218 \uc788\ub294 \ubc29\ubc95\uc758 \uc218\ub294 \ub9e4\uc6b0 \ucee4\uc9c8 \uc218 \uc788\uc73c\ubbc0\ub85c ($10^9+7$)\ub85c \ub098\ub208 \ub098\uba38\uc9c0\ub97c \ucd9c\ub825\ud574\uc57c\ud55c\ub2e4.<\/li>\r\n<\/ul>\r\n"},{"problem_id":"24838","problem_lang":"1","title":"Subarray Summation Game","description":"<p>Alice likes to play the &quot;Subarray Summation Game&quot; according to the following rules:<\/p>\r\n\r\n<ul>\r\n\t<li>First of all, she would choose an integer array $A$ of length $n$. Let $A[1]$, $\\dots$, $A[n]$ be the elements of $A$, and these $n$ values must be distinct.<\/li>\r\n\t<li>Next, she would pick $m$ pairs of indices of array $A$, $(x[1], y[1])$, $\\dots$, $(x[m], y[m])$ with $1 &le; x[i] &le; y[i] &le; n$.<\/li>\r\n\t<li>Using $A$ as well as $x$ and $y$, define the <em>subarray sum<\/em> $S(A, x, y)$ as follows:&nbsp;$S(A, x, y) := &nbsp;\\sum_{1 \\le j \\le m} ( \\sum_{x[j] \\le i \\le y[j]} A[i] ) $<\/li>\r\n\t<li>The objective of the game is to re-arrange the elements of $A$ arbitrarily in order to maximize&nbsp;$S(A, x, y)$. Since $A$ contains $n$ elements, there are $n!$ ways to re-arrange the elements of $A$.<\/li>\r\n<\/ul>\r\n\r\n<p>For instance,&nbsp;suppose that $n = 3$, $m = 2$, $A = [10, 100, 1000]$,&nbsp;$x = [1, 2]$, and $y = [2, 2]$. Because $n = 3$, there are six ways to obtain a new array by re-arranging $A$ -- to differentiate this from the original array, let the new array be $B$.<\/p>\r\n\r\n<ul>\r\n\t<li>When $B = [10, 100, 1000]$: $S(B, x, y) = (10 + 100) + (100) = 210$.<\/li>\r\n\t<li>When $B = [10, 1000, 100]$: $S(B, x, y) = (10 + 1000) + (1000) = 2010$.<\/li>\r\n\t<li>When $B = [100, 10, 1000]$:&nbsp;$S(B, x, y) = (100 + 10) + (10) = 120$.<\/li>\r\n\t<li>When $B = [100, 1000, 10]$: $S(B, x, y) = (100 + 1000) + (1000) = 2100$.<\/li>\r\n\t<li>When $B = [1000, 10, 100]$: $S(B, x, y) = (1000 + 10) + (10) = 1020$.<\/li>\r\n\t<li>When $B = [1000, 100, 10]$: $S(B, x, y) = (1000 + 100) + (100) = 1200$.<\/li>\r\n<\/ul>\r\n\r\n<p>In this case, the maximum possible value for $S(A, x, y)$ is $2100$, and it can be achieved by having $B = [100, 1000, 10]$.<\/p>\r\n\r\n<p>To give another example, suppose&nbsp;$n = 2$, $m = 1$, $A = [20, 22]$,&nbsp;$x = [1]$, and $y = [2]$. Because $n = 2$, there are two ways to re-arrange $A$ -- to differentiate this from the original array, let the new array be $B$.<\/p>\r\n\r\n<ul>\r\n\t<li>When $B = [20, 22]$: $S(B, x, y) = (20&nbsp;+ 22) = 42$.<\/li>\r\n\t<li>When $B = [22, 20]$: $S(B, x, y) = (22&nbsp;+ 20) = 42$.<\/li>\r\n<\/ul>\r\n\r\n<p>In this case, the maximum possible value for $S(A, x, y)$ is $42$, and there are two different ways to achieve it.<\/p>\r\n\r\n<p>Given $A$, $x$, and $y$, compute the maximum possible value for $S(A, x, y)$ by re-arranging elements in $A$, and also compute in how many different ways Alice can achieve the said maximum value.<\/p>\r\n","input":"<p>The first line of input will contain $T$, the number of test cases.<\/p>\r\n\r\n<p>For each test case, the first line will contain $n$ and $m$ separated by whitespace. The second line will contain $n$ elements of $A$, separated by whitespace. Each of the next $m$ lines will contain two integers $x[i]$ and $y[i]$, separated by whitespace.<\/p>\r\n","output":"<p>Output the answer of each test case in each line: The maximum possible value for $S(A, x, y)$ and the number of ways to achieve it should be output in a single line, separated by whitespace. Since the number of ways can be very large, output the number modulo&nbsp;$10^9+7$ (i.e., the remainder if divided by $10^9+7$).<\/p>\r\n","hint":"","original":"0","html_title":"0","problem_lang_tcode":"English","limit":"<ul>\r\n\t<li>$1 &le; T &le; 10$<\/li>\r\n\t<li>$1 &le; n &le; 50\\,000$<\/li>\r\n\t<li>$1 &le; m &le; 200\\,000$<\/li>\r\n\t<li>$1 &le;$ each element of $A &le; 10^8$<\/li>\r\n\t<li>Elements in $A$ are distinct<\/li>\r\n\t<li>For each $i$ with $1 &le; i &le; m$:&nbsp;$1 &le; x[i] &le; y[i] &le; n$<\/li>\r\n<\/ul>\r\n","sample_explain_1":"<ul>\r\n\t<li>Cases 1-2: Discussed in the problem statement.<\/li>\r\n\t<li>Cases 3-4: No further explanation.<\/li>\r\n\t<li>Case 5: The maximum value of $S(A, x, y)$ can exceed 32-bit integer.<\/li>\r\n\t<li>Case 6: The number of ways can be very large, so output the answer modulo&nbsp;($10^9+7$).<\/li>\r\n<\/ul>\r\n"}]

시간 제한

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