Compilare: main.cpp: In function 'bool DFS(int, int)': main.cpp:24:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 24 | for (int i = 0; i < A[c][t].size(); ++ i) { | ~~^~~~~~~~~~~~~~~~ main.cpp: In function 'void maxbipmatch()': main.cpp:52:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 52 | for (int j = 0; j < A[0][i].size(); ++ j) { | ~~^~~~~~~~~~~~~~~~ main.cpp:98:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 98 | for (int i = 0; i < A[dep][u].size(); ++ i) { | ~~^~~~~~~~~~~~~~~~~~ main.cpp:113:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 113 | for (int i = 0; i < ans.size(); ++ i) { | ~~^~~~~~~~~~~~ main.cpp:114:36: warning: unused variable 'r' [-Wunused-variable] 114 | int c = 1, t = ans[i], r = DFS(c, t); | ^