Compilare: main.cpp: In function 'int solve(int)': main.cpp:16:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 16 | for(int i = 0;i < v[a].size();i++) | ~~^~~~~~~~~~~~~ main.cpp:26:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 26 | for(int i = 0;i < v[a].size();i++) | ~~^~~~~~~~~~~~~ main.cpp: In function 'void watafac(int)': main.cpp:42:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 42 | for(int i = 0;i < v[a].size();i++) | ~~^~~~~~~~~~~~~