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  1. #include <stdio.h>
  2.  
  3. int main() {
  4.     int M, N;
  5.     long long P[1005][1005];
  6.  
  7.     scanf("%d %d", &M, &N);
  8.  
  9.     // Input matriks prefix sum
  10.     for (int i = 1; i <= M; i++) {
  11.         for (int j = 1; j <= N; j++) {
  12.             scanf("%lld", &P[i][j]);
  13.         }
  14.     }
  15.  
  16.     // Mengisi baris dan kolom pertama dengan 0
  17.     for (int i = 0; i <= M; i++) {
  18.         P[i][0] = 0;
  19.     }
  20.  
  21.     for (int j = 0; j <= N; j++) {
  22.         P[0][j] = 0;
  23.     }
  24.  
  25.     int B, K;
  26.  
  27.     // Membaca pertanyaan sampai sentinel -9
  28.     while (1) {
  29.         scanf("%d", &B);
  30.  
  31.         if (B == -9) {
  32.             break;
  33.         }
  34.  
  35.         scanf("%d", &K);
  36.  
  37.         long long hasil;
  38.  
  39.         hasil = P[B][K]
  40.               - P[B - 1][K]
  41.               - P[B][K - 1]
  42.               + P[B - 1][K - 1];
  43.  
  44.         printf("%lld ", hasil);
  45.     }
  46.  
  47.     return 0;
  48. }
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin
copy 
3 3
10 30 60
15 45 95
17 51 107
1 1
2 1
1 3
3 3
-9
stdout
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10 5 30 6
https://ideone.com/4tmv5p
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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