Compilare: user.cpp: In function ‘int main()’: user.cpp:142:54: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(/*rad(k+1)!=rad(k+2)*/fl==false &&i<v.size()){ ^ user.cpp:144:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(fl==false &&v[i].first==raza &&i<v.size()){ ^ user.cpp:113:11: warning: variable ‘m’ set but not used [-Wunused-but-set-variable] int n,m,k,i,j; ^ user.cpp: In function ‘int getInt()’: user.cpp:97:16: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(s); ^ user.cpp: In function ‘int main()’: user.cpp:111:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("hallway.in","r",stdin); ^ user.cpp:112:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ("hallway.out","w",stdout); ^ /tmp/ccjLyFxR.o: In function `getInt()': user.cpp:(.text+0x190): warning: the `gets' function is dangerous and should not be used.