Compilare: main.cpp: In function 'int main()': main.cpp:199:51: warning: array subscript has type 'char' [-Wchar-subscripts] 199 | ans = ans + 1LL * fib[v[i][j].first]; | ~~~~~~~~^~~~~ main.cpp:209:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 209 | for(int i = 0; i<w.size() - 1; i++) | ~^~~~~~~~~~~~~ main.cpp:211:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 211 | if(w[i].second == 1 && i < w.size() - 2) | ~~^~~~~~~~~~~~~~ main.cpp:227:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 227 | for(int i = 0; i<w.size() - 1; i++) | ~^~~~~~~~~~~~~ main.cpp:229:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 229 | if(w[i].second == 1 && i < w.size() - 2) | ~~^~~~~~~~~~~~~~ main.cpp:259:55: warning: array subscript has type 'char' [-Wchar-subscripts] 259 | ans = ans + 1LL * fib[v[i][j].first]; | ~~~~~~~~^~~~~