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Fix BFS retroanalysis #20

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Fix BFS retroanalysis #20

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4 changes: 2 additions & 2 deletions games-on-graphs.md
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Original file line number Diff line number Diff line change
Expand Up @@ -65,15 +65,15 @@ while (!q.empty()) {
q.pop();
for (int u : t[v]) {
cnt[u]--; // удаляем это ребро
if (status[v] == unknown) {
if (status[u] == unknown) {
// из u есть ребро в проигрышную -- значит она выигрышная
if (status[v] == loss)
status[u] = win;
// все ребра u ведут в выигрышные вершины -- значит она проигрышная
if (status[v] == win && cnt[u] == 0)
status[u] = loss;
// если после проверок у вершины определилась выигрышность, то её можно добавить в очередь
if (status[v] != unknown)
if (status[u] != unknown)
q.push(u);
}
}
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