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#include <stdio.h> #include <ctype.h> #include <string.h> #include <math.h> int main(int argc, char *argv[]) { int n, m; scanf("%d%d", &n, &m); int matrica[n][m]; for(int i = 0; i < n; i++) { for(int j = 0; j < m; j++) { scanf("%d", &matrica[i][j]); } } for(int i = 0; i < n; i += 2) { for(int j = 0; j < m; j++) { if(i + 1 < n) { matrica[i][j] -= matrica[i + 1][j]; } } } for(int i = 0; i < n; i += 2) { for(int j = 0; j < m; j++) { printf("%d ", matrica[i][j]); } printf("\n"); } return 0; } /* 1 0 2 4 3 3 23 5 3 5 5 6 0 3 12 7 1 7 0 12 3 3 4 3 1 7 **/
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