Compilare: main.cpp: In function 'bool cup(int, int)': main.cpp:45:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 45 | for(int i=0;i<adj[nod].size();i++) st[i]=-1; | ~^~~~~~~~~~~~~~~~ main.cpp:46:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 46 | for(int i=0;i<adb[target].size();i++) dr[i]=-1; | ~^~~~~~~~~~~~~~~~~~~ main.cpp:47:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 47 | for(int i=0;i<adj[nod].size();i++) | ~^~~~~~~~~~~~~~~~ main.cpp:50:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 50 | for(int j=0;j<adb[target].size();j++) | ~^~~~~~~~~~~~~~~~~~~ main.cpp:59:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 59 | for(int i=0;i<adj[nod].size();i++) vis[i]=0; | ~^~~~~~~~~~~~~~~~ main.cpp:60:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 60 | for(int i=0;i<adj[nod].size();i++) | ~^~~~~~~~~~~~~~~~ main.cpp:65:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 65 | return ans==adb[target].size(); | ~~~^~~~~~~~~~~~~~~~~~~~