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Cod sursa(job #244621)
#include <fstream>
using namespace std;
ifstream f ("fisier.in");
ofstream g ("fisier.out");
int v[100][100], n;
void read()
{ f >> n;
for (int i=1; i<=n; i++)
for (int j=1; j<=n; j++)
f >> v[i][j];
}
void suma()
{ int sum=0;
for (int i=1; i<=n; i++)
for (int j=1; j<=n; j++)
if (j==i-1 || j==i+1) sum+=v[i][j];
g << sum;
}
int main()
{ read();
suma();
f.close();
g.close();
return 0;
}