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:117:34: warning: narrowing conversion of 'i' from 'long long int' to 'int' inside { } [-Wnarrowing] v[a].push_back({u,vv,b,i}); ^ main.cpp:118:34: warning: narrowing conversion of 'i' from 'long long int' to 'int' inside { } [-Wnarrowing] v[b].push_back({u,vv,a,i}); ^ main.cpp:121:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation] for(i=1;i<=q;++i) ^~~ main.cpp:123:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' return 0; ^~~~~~ main.cpp:93:17: warning: unused variable 't' [-Wunused-variable] long long q,t,m,i,j; ^