Compilare: main.cpp: In function 'void dfs(int)': main.cpp:21:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 21 | for (i = 0; i<v[x].size(); i++) | ~^~~~~~~~~~~~ main.cpp:25:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | for (i = 0; i<t[x].size(); i++) | ~^~~~~~~~~~~~ main.cpp: In function 'void topsort(std::vector<int>&)': main.cpp:35:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 35 | for (i = 0; i<c.size(); i++) | ~^~~~~~~~~ main.cpp:39:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 39 | for (i = 0; i<q.size(); i++) | ~^~~~~~~~~ main.cpp:41:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for (j = 0; j<v[q[i]].size(); j++) | ~^~~~~~~~~~~~~~~ main.cpp: In function 'int calcdp(std::vector<int>, int)': main.cpp:64:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 64 | for (i = 0; i<c.size(); i++) | ~^~~~~~~~~ main.cpp:72:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 72 | for (it = 0; it < t[c[j]].size(); it++) | ~~~^~~~~~~~~~~~~~~~