17 lines
501 B
Python
17 lines
501 B
Python
import sys
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input = sys.stdin.readline
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if __name__ == "__main__":
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N, M = map(int, input().split())
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A = [list(map(int, input().split())) for _ in range(N)]
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S = [[0 for _ in range(N + 1)] for _ in range(N + 1)]
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for i in range(N):
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for j in range(N):
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S[i + 1][j + 1] = S[i][j + 1] + S[i + 1][j] - S[i][j] + A[i][j]
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for _ in range(M):
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x1, y1, x2, y2 = map(int, input().split())
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print(S[x2][y2] - S[x2][y1 - 1] - S[x1 - 1][y2] + S[x1 - 1][y1 - 1])
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