#include 
#include 
int main(int argc, const char * argv[]) {
    FILE *in = fopen("input.txt", "r");
    
    int n;
    fscanf(in, "%d", &n);
    
    int mat[n][n];
    for(int i = 0; i < n; i++) {
        for(int j = 0; j < n; j++) {
            fscanf(in, "%d", &mat[i][j]);
        }
    }
    return 0;
    
}