Compilare: user.cpp: In member function ‘bool chestie::insertc(int, int)’: user.cpp:22:30: warning: no return statement in function returning non-void [-Wreturn-type] m.insert(pair<int,int>(x,y));} ^ user.cpp: In function ‘int main()’: user.cpp:31:30: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cutii.in","r",stdin); ^ user.cpp:32:32: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("cutii.out","w",stdout); ^ user.cpp:34:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&t); ^ user.cpp:39:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&v[i].z,&v[i].x,&v[i].y); ^