Compilare: main.cpp: In function 'long long int val()': main.cpp:90:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 90 | for(i = 0; i < pb.size(); i++) | ~~^~~~~~~~~~~ main.cpp:100:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 100 | for(i = 0; i < pb.size(); i++) | ~~^~~~~~~~~~~ main.cpp:117:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 117 | for(i = 0; i < temp.size(); i++) | ~~^~~~~~~~~~~~~