Compilare: main.cpp: In function 'bool solve(int)': main.cpp:85:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 85 | for(int j=0;j<yg.size();j++) | ~^~~~~~~~~~ main.cpp:94:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 94 | if(j!=yg.size()-1 && yg[j].first==yg[j+1].first) ind--; | ~^~~~~~~~~~~~~ main.cpp:109:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<eveniment>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 109 | for(int i=0;i<ev.size();i++) | ~^~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:156:16: warning: 'sol' may be used uninitialized [-Wmaybe-uninitialized] 156 | fout<<sol<<'\n'; | ^~~~ main.cpp:139:9: note: 'sol' was declared here 139 | int sol; | ^~~