Compilare: main.cpp: In function 'void getnext(ll)': main.cpp:30:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(int i=0;i<vals.size();i++) | ~^~~~~~~~~~~~ main.cpp:31:24: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 31 | for(int j=i+1;j<vals.size();j++) | ~^~~~~~~~~~~~ main.cpp:14:9: warning: variable 'x' set but not used [-Wunused-but-set-variable] 14 | int x=0; | ^ main.cpp: In function 'void solve()': main.cpp:50:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(int i=0;i<sol.size();i++) | ~^~~~~~~~~~~