Compilare: main.cpp: In function 'void dfs(int)': main.cpp:62:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 62 | for(int i=0;i<muchii[nod].size();i++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp:74:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 74 | for(int i=0;i<muchii[nod].size();i++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void buildpath()': main.cpp:91:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 91 | for(int i=0;i<muchii[nod].size();i++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:147:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 147 | for(int i=0;i<path.size();i++) | ~^~~~~~~~~~~~ main.cpp:155:17: warning: variable 'j' set but not used [-Wunused-but-set-variable] 155 | for(pii j:muchii[i]) | ^