Compilare: user.cpp: In function ‘void precalcPartial()’: user.cpp:45:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<G[i].size();j++) ^ user.cpp: In function ‘int Solve(int, int)’: user.cpp:84:16: warning: unused variable ‘ans’ [-Wunused-variable] int node=x,ans,roads=y; ^ user.cpp: In function ‘int main()’: user.cpp:108:13: warning: unused variable ‘left’ [-Wunused-variable] int left=1,right=0x3f3f3f3f,mid,sol=0; ^ user.cpp:108:20: warning: unused variable ‘right’ [-Wunused-variable] int left=1,right=0x3f3f3f3f,mid,sol=0; ^ user.cpp:108:37: warning: unused variable ‘mid’ [-Wunused-variable] int left=1,right=0x3f3f3f3f,mid,sol=0; ^