AGC002B Box and Ball 提出AC int main() { cout <<setprecision(10); ll n , m; cin >> n >> m; vector<ll> x(m),y(m); rep(i,m){ cin >> x[i] >> y[i]; } vector<pair<ll,bool>> boal(n); //個数 赤がありうるかそうかどうか rep(i,n){ boal[i].first = 1; boal[i].second = false; } boal[0].second = true; ll</pair<ll,bool></ll></setprecision(10);>…