Compilare: main.cpp: In function 'int main()': main.cpp:72:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | if(mx<ctc[i].size()) | ~~^~~~~~~~~~~~~~ main.cpp:93:25: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 93 | while(sol.size()<mx) | ~~~~~~~~~~^~~ main.cpp:96:26: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 96 | if(sol.size()==mx-1) | ~~~~~~~~~~^~~~~~ main.cpp:106:30: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 106 | if(sol.size()==mx) | ~~~~~~~~~~^~~~ main.cpp:115:31: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 115 | else if(sol.size()<mx-1) | ~~~~~~~~~~^~~~~ main.cpp:76:10: warning: unused variable 'ok' [-Wunused-variable] 76 | bool ok=false; | ^~ main.cpp:100:51: warning: 'first' may be used uninitialized in this function [-Wmaybe-uninitialized] 100 | if(!viz[i] && exists[100*(i-1)+first]) | ~~~~~~~~~^~~~~~