Compilare: main.cpp: In function 'int dfs0(int, int, int)': main.cpp:29:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 29 | for(int i=0;i<v[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int dfs1(int, int, int)': main.cpp:57:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 57 | for(int i=0;i<v[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int, int, int)': main.cpp:100:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 100 | for(int i=0;i<v[nod].size();i++) | ~^~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:159:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 159 | for(int i=0;i<sol.size();i++) | ~^~~~~~~~~~~ main.cpp:164:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 164 | for(int i=0;i<sol.size();i++) | ~^~~~~~~~~~~ main.cpp: In function 'int dfs0(int, int, int)': main.cpp:42:1: warning: control reaches end of non-void function [-Wreturn-type] 42 | } | ^ main.cpp: In function 'int dfs1(int, int, int)': main.cpp:70:1: warning: control reaches end of non-void function [-Wreturn-type] 70 | } | ^