Compilare: main.cpp: In function 'bool ok(long long int, long long int)': main.cpp:88:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 88 | for(int j=0; j<t.size(); j++) | ~^~~~~~~~~ main.cpp:92:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<poz>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 92 | for(int j=0;j<v.size();j++) | ~^~~~~~~~~ main.cpp:104:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<poz>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 104 | for(int j=0;j<v.size();j++) | ~^~~~~~~~~ main.cpp:136:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 136 | for(int j=0; j<t.size(); j++) | ~^~~~~~~~~ main.cpp:140:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<poz>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 140 | for(int j=0;j<v.size();j++) | ~^~~~~~~~~ main.cpp:152:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<poz>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 152 | for(int j=0;j<v.size();j++) | ~^~~~~~~~~