Compilare: user.cpp: In function ‘int main()’: user.cpp:29:21: warning: unused variable ‘s’ [-Wunused-variable] int n, m, i, j, s, t, d, rx, ry, x_aa, y_aa, maxi; ^ user.cpp:29:24: warning: unused variable ‘t’ [-Wunused-variable] int n, m, i, j, s, t, d, rx, ry, x_aa, y_aa, maxi; ^ user.cpp:29:27: warning: unused variable ‘d’ [-Wunused-variable] int n, m, i, j, s, t, d, rx, ry, x_aa, y_aa, maxi; ^ user.cpp:26:33: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bile.in","r",stdin); ^ user.cpp:27:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("bile.out","w",stdout); ^ user.cpp:32:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ user.cpp:34:38: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&x[ i] ,&y[ i ]); ^