Compilare: main.cpp: In function 'bool Solver::similar(std::vector<int>, std::vector<int>)': main.cpp:12:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 12 | for(int i=0; i<p1.size(); i++) | ~^~~~~~~~~~ main.cpp:15:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 15 | if(same==p1.size()-2) | ~~~~^~~~~~~~~~~~~ main.cpp: In function 'int Solver::solve(int, int, std::vector<std::vector<int> >)': main.cpp:38:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 38 | for(int i=0; i<A.size(); i++) | ~^~~~~~~~~ main.cpp:39:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for(int j=i+1; j<A.size(); j++) | ~^~~~~~~~~ main.cpp:42:34: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 42 | if(ok && A.size()>ans) | ~~~~~~~~^~~~ main.cpp:47:5: warning: control reaches end of non-void function [-Wreturn-type] 47 | } | ^