Compilare: main.cpp: In function 'void dfsA(int)': main.cpp:21:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for(int i = 0; i < v[nod].size(); i++){ | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void dfsB(int)': main.cpp:30:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 30 | for(int i = 0; i < v[nod].size(); i++){ | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'void dfs(int)': main.cpp:40:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 40 | for(int i = 0; i < v[nod].size(); i++){ | ~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:86:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 86 | for(int j = 0; j < C.size(); j++){ | ~~^~~~~~~~~~ main.cpp:109:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 109 | for(int i = 0; i < A.size(); i++) s.insert(A[i].first); | ~~^~~~~~~~~~ main.cpp:110:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 110 | for(int i = 0; i < B.size(); i++) s1.insert(B[i].first); | ~~^~~~~~~~~~ main.cpp:117:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 117 | for(int i = 0; i < B.size(); i++){ | ~~^~~~~~~~~~ main.cpp:128:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 128 | for(int i = 0; i < A.size(); i++){ | ~~^~~~~~~~~~ main.cpp:140:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 140 | for(int i = 0; i < A.size(); i++){ | ~~^~~~~~~~~~ main.cpp:145:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 145 | for(int i = 0; i < B.size(); i++){ | ~~^~~~~~~~~~ main.cpp:171:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare] 171 | for(int j = 0; j < C.size(); j++){ | ~~^~~~~~~~~~