Compilare: main.cpp: In function 'int main()': main.cpp:32:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<muchie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 32 | for(i=0;i<a[s].size();i++) | ~^~~~~~~~~~~~ main.cpp:53:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<muchie>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(j=0;j<a[pmin].size();j++) | ~^~~~~~~~~~~~~~~