Compilare: main.cpp: In function 'int main()': main.cpp:49:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::tuple<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 49 | for(int i = 0; i < muchii[u].size(); i++) | ~~^~~~~~~~~~~~~~~~~~ main.cpp:49:36: warning: 'u' may be used uninitialized [-Wmaybe-uninitialized] 49 | for(int i = 0; i < muchii[u].size(); i++) | ^ main.cpp:43:13: note: 'u' was declared here 43 | int u, minim = inf; | ^