Compilare: user.cpp: In function ‘int main()’: user.cpp:96:30: warning: suggest parentheses around ‘&&’ within ‘||’ [-Wparentheses] if(v[i][1]>max||v[i][1]==max&&v[i][2]<min) ^ user.cpp:5:28: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cri.in","r",stdin); ^ user.cpp:6:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cri.out","w",stdout); ^ user.cpp:8:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d%d",&n,&m,&x,&y); ^ user.cpp:11:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i][j]); ^