Compilare: user.cpp: In function ‘int defeu(int, long long int, int)’: user.cpp:39:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:48:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<2*n;++i) ^ user.cpp:50:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(dr1 = 1;dr1<=n;++dr1) ^ user.cpp:59:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=n+1;i<2*n;++i) ^ user.cpp:62:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(coada1[st1].lu<coada1[st2].lu && st1 <=n) ^ user.cpp:74:51: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(coada1[st1].lu<coada1[st2].lu && st1 <=n) ^ user.cpp:101:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<=n;++i) ^