Compilare: main.cpp: In function 'int main()': main.cpp:28:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | if(hi[i]>=a[i].size()) | ~~~~~^~~~~~~~~~~~~ main.cpp:39:23: warning: operation on 'i' may be undefined [-Wsequence-point] 39 | i=l;while(i)g[b[i-1]]=--i-1; | ^~~ main.cpp:39:23: warning: operation on 'i' may be undefined [-Wsequence-point] main.cpp:52:10: warning: this 'if' clause does not guard... [-Wmisleading-indentation] 52 | {if(r[b[i]]!=m) | ^~ main.cpp:53:34: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if' 53 | r[b[i]]=m,p[b[i]]+=z;i++;} | ^