mirror of
https://git.sb/baoshuo/OI-codes.git
synced 2024-12-13 06:06:27 +00:00
40 lines
767 B
C++
40 lines
767 B
C++
|
#include <bits/stdc++.h>
|
||
|
|
||
|
using namespace std;
|
||
|
|
||
|
int t, n, u, v;
|
||
|
vector<int> g[100005];
|
||
|
bool flag, vis[100005];
|
||
|
|
||
|
void dfs(int u, int f) {
|
||
|
if (flag) return;
|
||
|
for (int i : g[u]) {
|
||
|
if (i != f) dfs(i, u);
|
||
|
}
|
||
|
if (!vis[u]) {
|
||
|
if (f == -1 || vis[f]) {
|
||
|
flag = true;
|
||
|
} else {
|
||
|
vis[f] = vis[u] = true;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
int main() {
|
||
|
cin >> t;
|
||
|
while (t--) {
|
||
|
flag = false;
|
||
|
for (auto& i : g) i.clear();
|
||
|
memset(vis, 0x00, sizeof(vis));
|
||
|
cin >> n;
|
||
|
for (int i = 1; i < n; i++) {
|
||
|
cin >> u >> v;
|
||
|
g[u].push_back(v);
|
||
|
g[v].push_back(u);
|
||
|
}
|
||
|
dfs(1, -1);
|
||
|
cout << (flag ? "Illyasviel" : "Miyu") << endl;
|
||
|
}
|
||
|
return 0;
|
||
|
}
|