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- #include <iostream>
- using namespace std;
- int main (){
- int i,j,t,p, n ,m,tot=0;
- cin >> n >> m;
- int v[n][m];
- int sw[n][m];
- for (i=0; i<n; i++){
- for (j=0; j<m; j++) {
- cin >> v[i][j];
- }
- }
- for (i=1; i<=n; i+2){
- for (j=0; j<m; j++) {
- sw[i][j] = 1;
- }
- }
- for (i=1; i<=n; i+2){
- for (j=0; j<m; j++) {
- p= v[i][j];
- for (t=0; t<p/2 ;t++){
- if (v[i][j]%t == 0){
- sw[i][j] =0;
- }
- }
- }
- }
- for (i=1; i<=n; i+2){
- for (j=0; j<m; j++) {
- if (sw[i][j] ==1){
- tot++;
- }
- }
- }
- cout << tot;
- }
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