Compilare: main.cpp: In function 'void dfs(int)': main.cpp:64:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for(int i=0;i<muchii[nod].size();i++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void buildpath()': main.cpp:96:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 96 | for(int i=0;i<muchii[nod].size();i++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:152:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 152 | for(int i=0;i<path.size();i++) | ~^~~~~~~~~~~~ main.cpp:160:17: warning: variable 'j' set but not used [-Wunused-but-set-variable] 160 | for(pii j:muchii[i]) | ^