Compilare: main.cpp: In function 'll getval(ll, std::vector<long long int>)': main.cpp:75:30: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 75 | for(int i=0;i<aux.size();i++) | ~^~~~~~~~~~~ main.cpp:97:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 97 | for(int i=0;i<r.size();i++) | ~^~~~~~~~~ main.cpp:104:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 104 | for(int i=0;i<r.size();i++) | ~^~~~~~~~~ main.cpp:111:40: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 111 | for(int i=0,l=lg/2+1,c=lg/2+1;i<r.size();i++,l--) | ~^~~~~~~~~ main.cpp:120:40: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 120 | for(int i=1,l=lg/2+2,c=lg/2+1;i<r.size();i++,l++) | ~^~~~~~~~~ main.cpp:129:38: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 129 | for(int i=1,l=lg/2+1,c=lg/2;i<r.size();i++,c--) | ~^~~~~~~~~ main.cpp:138:40: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 138 | for(int i=1,l=lg/2+1,c=lg/2+2;i<r.size();i++,c++) | ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:157:18: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 157 | for(int i=0;i<s.size();i++) | ~^~~~~~~~~ main.cpp: In function 'll getval(ll, std::vector<long long int>)': main.cpp:149:1: warning: control reaches end of non-void function [-Wreturn-type] 149 | } | ^