[백준][Python] 15724 주지수

오랜만에 직사각형 누적합

 

import sys
input = sys.stdin.readline

N, M = map(int, input().split())
areas = [list(map(int, input().split())) for _ in range(N)]
K = int(input())
dp = [[0 for _ in range(M+1)] for _ in range(N+1)]
dp[1][1] = areas[0][0]
for i in range(1,N+1):
    for j in range(1,M+1):
        dp[i][j] = dp[i-1][j] + dp[i][j-1] + areas[i-1][j-1] - dp[i-1][j-1]
for _ in range(K):
    x1,y1,x2,y2 = map(int, input().split())
    print(dp[x2][y2] - dp[x1-1][y2] - dp[x2][y1-1] + dp[x1-1][y1-1])