Compilare: user.cpp: In function ‘int main()’: user.cpp:10:17: warning: unused variable ‘nr’ [-Wunused-variable] int T,N,i,j,nr=0,t,ans; ^ user.cpp:10:22: warning: unused variable ‘t’ [-Wunused-variable] int T,N,i,j,nr=0,t,ans; ^ user.cpp:46:7: warning: ‘S2’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(S1>S2){ long long tmp=S1; S1=S2; S2=tmp; } ^ user.cpp:46:7: warning: ‘S1’ may be used uninitialized in this function [-Wmaybe-uninitialized]