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// Siberian Squirrel#include 
   
    #define IO ios::sync_with_stdio(false); cin.tie(0); cout.tie(0)#define ACM_LOCAL using namespace std;typedef long long ll;const int INF = 0x3f3f3f3f;const int N = 2e6 + 10;const int MOD = 998244353;ll n, m, k, w, res = 0;int f[N], a[N], q[N], t[N];ll quick_pow(ll ans, ll p, ll res = 1) {    for(; p; p >>= 1, ans = ans * ans % MOD)        if(p & 1) res = res * ans % MOD;    return res % MOD;}ll inv(ll ans) {    return quick_pow(ans, MOD - 2);}ll C(int n, int m) {    if(n < m || n <= 0 || m < 0) return 0;    if(m == 0) return 1;    return (ll)f[n] * inv(f[m]) % MOD * inv(f[n - m]) % MOD;}void merge_sort(int l, int r) {    if(l >= r) return;    int mid = l + r >> 1;    merge_sort(l, mid), merge_sort(mid + 1, r);    int k = 0, i = l, j = mid + 1;    while(i <= mid && j <= r) {        if(q[i] <= q[j]) {            t[k++] = q[i++];        } else {            t[k++] = q[j++];            res += mid - i + 1;        }    }    while(i <= mid) t[k++] = q[i++];    while(j <= r) t[k++] = q[j++];    for(i = l, j = 0; i <= r; ++i, ++j) q[i] = t[j];}inline void solve(ll ans = 0) {    if((abs(((n % 2) - (res % 2)))) & 1) {        cout << "Um_nik\n";    } else {        cout << "Petr\n";    }}int main() {    IO;    #ifdef ACM_LOCAL        freopen("input.txt", "r", stdin);        freopen("output.txt", "w", stdout);    #endif    f[0] = f[1] = 1;    for(int i = 2; i < N; ++i) {        f[i] = (ll)f[i - 1] * i % MOD;    }    int o = 1;    while(o--) {        cin >> n;        for(int i = 0; i < n; ++i) {            cin >> q[i];        }        merge_sort(0, n - 1);        solve();    }    return 0;}
   

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