Compilare: main.cpp: In function 'int main()': main.cpp:147:51: warning: array subscript has type 'char' [-Wchar-subscripts] 147 | ans = ans + 1LL * fib[v[i][j].first]; | ~~~~~~~~^~~~~ main.cpp:157:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 157 | for(int i = 0; i<w.size() - 1; i++) | ~^~~~~~~~~~~~~ main.cpp:159:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 159 | if(w[i].second == 1 && i < w.size() - 2) | ~~^~~~~~~~~~~~~~ main.cpp:175:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 175 | for(int i = 0; i<w.size() - 1; i++) | ~^~~~~~~~~~~~~ main.cpp:177:42: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, bool> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 177 | if(w[i].second == 1 && i < w.size() - 2) | ~~^~~~~~~~~~~~~~ main.cpp:207:55: warning: array subscript has type 'char' [-Wchar-subscripts] 207 | ans = ans + 1LL * fib[v[i][j].first]; | ~~~~~~~~^~~~~