36 lines
738 B
C
36 lines
738 B
C
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#include <stdio.h>
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#pragma gcc optimize("O2")
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#define MAX 10
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int matrixAdd(int matrix[][MAX], int m, int n, int x, int y);
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int main(void) {
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int m, n;
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scanf("%d%d", &m, &n);
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int matrix[m][MAX];
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for (int i = 0; i < m; i++) {
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for (int j = 0; j < n; j++) {
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scanf("%d", &matrix[i][j]);
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}
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}
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int x, y;
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scanf("%d%d", &x, &y);
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printf("%d\n", matrixAdd(matrix, m, n, x - 1, y - 1));
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return 0;
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}
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int matrixAdd(int matrix[][MAX], int m, int n, int x, int y) {
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int sum = 0;
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for (int i = -1; i <= 1; i++) {
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for (int j = -1; j <= 1; j++) {
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if (i + x >= 0 && i + x < m && j + y >= 0 && j + y < n &&
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!(i == j && i == 0)) {
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sum += matrix[i + x][j + y];
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}
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}
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}
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return sum;
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}
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