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- #include <iostream>
- using namespace std;
- int main() {
- int a[101][101],n,m,c=0;
- cin>>n>>m;
- for(int i=1;i<=n;i++)
- for(int j=1;j<=m;j++)
- cin>>a[i][j];
- for(int i=1;i<n;i++) ///fixam linia i
- for(int is=i+1;is<=n;is++){ //comparam toate liniile din partea de jos a lui i (de la i+1 pana la n)
- int ok=1;
- for(int j=1;j<=m;j++) ///parcurgem in pararel cele doua linii
- {
- if(a[i][j]!=a[is][j])
- ok=0;
- }
- if(ok==1)
- c++;
- }
- cout<<c;
- return 0;
- }
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