AcWing 798 difference matrix https://www.acwing.com/problem/content/800/
#include <iostream> #include <cstdio> #include <algorithm> using namespace std; const int N = 1005; int a[N][N]; int b[N][N]; void sert(int x1, int y1, int x2, int y2, int c) { b[x1][y1] += c; b[x2+1][y1] -= c; b[x1][y2+1] -= c; b[x2+1][y2+1] += c; } int main() { int n, m, q; cin >> n >> m >> q; for(int i = 1; i<= n; ++ i) for(int j = 1; j <= m; ++ j) { cin >> a[i][j]; sert(i, j, i, j, a[i][j]); } while(q --) { int x1, y1, x2, y2, c; cin >> x1 >> y1 >> x2 >> y2 >> c; SERT (X1, Y1, X2, Y2, C); } for ( int I = . 1 ; I <= n-; ++ I) { for ( int J = . 1 ; J <= m; ++ J) { B [ I] [J] = B [I- . 1 ] [J] + B [I] [J- . 1 ] - B [I- . 1 ] [J- . 1 ] + B [I] [J]; // differential array evaluation is the original prefix and the array COUT << B [I] [J] << " " ; } COUT << endl; } return 0 ; }
n, m, q = map(int, input().split()) a = [[0 for i in range(m+5)] for i in range(n+5)] b = [[0 for i in range(m+5)] for i in range(n+5)] def insert(x1, y1, x2, y2, c): b[x1][y1] += c b[x1][y2+1] -= c b[x2+1][y1] -= c b[x2+1][y2+1] += c for i in range(1, n+1): row = [0] + list(map(int, input().split())) for j in range(1, m+1): a[i][j] = row[j] insert(i, j, i, j, a[i][j]) while q: q -= 1 x1, y1, x2, y2, c = map(int, input().split()) insert(x1, y1, x2, y2, c) for i in range(1, n+1): for j in range(1, m+1): b[i][j] += b[i-1][j] + b[i][j-1] - b[i-1][j-1] print(b[i][j], end=" ") print("")