Compilare: user.cpp: In function ‘void lee(int)’: user.cpp:22:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j, s, d, t, k, x_aa, y_aa, x_aa2, y_aa2; ^ user.cpp:22:24: warning: unused variable ‘k’ [-Wunused-variable] int i, j, s, d, t, k, x_aa, y_aa, x_aa2, y_aa2; ^ user.cpp: In function ‘int main()’: user.cpp:95:18: warning: unused variable ‘s’ [-Wunused-variable] int n, i, j, s, t, d, k; ^ user.cpp:95:24: warning: unused variable ‘d’ [-Wunused-variable] int n, i, j, s, t, d, k; ^ user.cpp:92:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sudest.in","r",stdin); ^ user.cpp:93:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("sudest.out","w",stdout); ^ user.cpp:97:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:100:56: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] for( j = 1; j <= n; ++j ) scanf("%d",&vv[i][j]); ^ user.cpp:103:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&k); ^ user.cpp:108:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&t); ^