Compilare: user.cpp: In function ‘void solve()’: user.cpp:82:15: warning: unused variable ‘tip’ [-Wunused-variable] int x,y,k,tip,_x,_y; ^ user.cpp: In function ‘void scan(int&)’: user.cpp:19:56: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++poz == DIM)fread(buff,1,DIM,stdin),poz = 0; ^ user.cpp:22:56: warning: ignoring return value of ‘size_t fread(void*, size_t, size_t, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] if(++poz == DIM)fread(buff,1,DIM,stdin),poz = 0; ^ user.cpp: In function ‘int main()’: user.cpp:114:35: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("padure.in","r",stdin); ^ user.cpp:115:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("padure.out","w",stdout); ^