Compilare: main.cpp: In function 'void solve(int, int)': main.cpp:61:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size();++j) ~^~~~~~~~~~~~ main.cpp:76:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size();++j) ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:107:28: warning: suggest parentheses around '&&' within '||' [-Wparentheses] if(x[a]==u && y[a]==vv || x[a]==vv && y[a]==u) ~~~~~~~~^~~~~~~~~~~ main.cpp:93:11: warning: unused variable 't' [-Wunused-variable] int q,t,m,i,j; ^