| 53 | } |
| 54 | |
| 55 | int main() |
| 56 | { |
| 57 | int v; |
| 58 | v = 5; |
| 59 | vector<int> vec[v]; |
| 60 | |
| 61 | // adding edges from this point |
| 62 | add_edge(vec, 0, 1); |
| 63 | add_edge(vec, 0, 3); |
| 64 | add_edge(vec, 1, 2); |
| 65 | add_edge(vec, 2, 4); |
| 66 | add_edge(vec, 3, 1); |
| 67 | add_edge(vec, 4, 3); |
| 68 | |
| 69 | if (topo_sort(vec, v)) |
| 70 | { |
| 71 | cout << "No cycle " << endl; |
| 72 | } |
| 73 | else |
| 74 | { |
| 75 | cout << "there is a cycle" << endl; |
| 76 | } |
| 77 | |
| 78 | return 0; |
| 79 | } |