#include <bits/stdc++.h>
#define owo(i,a, b) for(int i=(a);i<(b); ++i)
#define uwu(i,a, b) for(int i=(a)-1; i>=(b); --i)
#define senpai push_back
#define ttgl pair<int, int>
#define ayaya cout<<"ayaya~"<<endl
using namespace std;
/*#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
gp_hash_table<int, int> mp;*/
using ll = long long;
using ld = long double;
const ll MOD = 1000000007;
int gcd(int a,int b){return b?gcd(b,a%b):a;}
ll binpow(ll a,ll b){ll res=1;while(b){if(b&1)res=(res*a)%MOD;a=(a*a)%MOD;b>>=1;}return res;}
ll modInv(ll a){return binpow(a, MOD-2);}
const double PI = acos(-1);
const double eps = -1e6;
const int INF = 0x3f3f3f3f;
const int NINF = 0xc0c0c0c0;
const ll INFLL = 0x3f3f3f3f3f3f3f3f;
const ll NINFLL = 0xc0c0c0c0c0c0c0c0;
const int mxN = 500;
int st = -1;
int adj[mxN][mxN];
int cnt[mxN];
int num[mxN][mxN];
int par[mxN][mxN];
bool state[mxN][mxN][2];
//state = [cop_pos, robber_pos]
//0 is cop's turn
//1 is robber's turn
int n;
int start(int N, bool A[mxN][mxN]) {
n= N;
queue<array<int, 3>> Q;
owo(i, 0, n) {
owo(j, 0, n) {
adj[i][j] = A[i][j];
cnt[i]+=adj[i][j];
}
state[i][i][0] = true;
state[i][i][1] = true;
Q.push({i, i, 0});
Q.push({i, i, 1});
}
while(!Q.empty()) {
auto p = Q.front();
Q.pop();
if(p[2]==0) {
owo(i, 0, n) {
if(adj[p[1]][i]) {
if(state[p[0]][i][1])continue;
num[p[0]][i]++;
if(num[p[0]][i]==cnt[i]) {
state[p[0]][i][1] = true;
Q.push({p[0], i, 1});
}
}
}
}else {
owo(i, 0, n) {
if(adj[p[0]][i]||i==p[0]) {
if(state[i][p[1]][0])continue;
state[i][p[1]][0] = true;
par[i][p[1]] = p[0];
Q.push({i, p[1], 0});
}
}
}
}
owo(i, 0, n) {
owo(j, 0, n) {
if(!state[i][j][0])break;
if(j==n-1)st = i;
}
}
return st;
}
int nextMove(int R) {
return st = par[st][R];
}
/*int main() {
int N;
cin >> N;
bool A[mxN][mxN];
for (int i = 0; i < N; i++) {
for (int j = 0; j < N; j++) {
cin >> A[i][j];
}
}
int P = start(N,A);
int curr = -1;
while(st!=curr) {
cout<<"cop: "<<st<<"\n";
cin>>curr;
nextMove(curr);
}
cout << P << endl;
int R;
cin >> R;
while (true) {
if (P == R) break;
P = nextMove(R);
cout << P << endl;
if (P == R) break;
cin >> R;
}
}*/
