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- #include <stdio.h>
- #include <stdlib.h>
- int main()
- {
- int a[100][100];
- int n, m;
- scanf("%d %d", &n, &m);
- int i, j;
- for(i = 0; i < n; i++)
- {
- for(j = 0; j < m; j++)
- {
- scanf("%d", &a[i][j]);
- }
- }
- int sumaN = 0;
- int sumaP = 0;
- for(i = 1; i <= n; i++)
- {
- for(j = 1; j <= m; j++)
- {
- if(i % 2 != 0)
- sumaN += a[i][j];
- if(j%2 == 0)
- sumaP += a[i][j];
- }
- }
- printf("%d", sumaP - sumaN);
- return 0;
- }
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