#include "coprobber.h"
#include <bits/stdc++.h>
using namespace std;
const int maxn = 510;
bool visited[maxn][maxn][2];
bool a[maxn][maxn];
int n;
int lf[maxn][maxn][2];
int nxt[maxn][maxn];
struct state {
int c, r, t;
};
int curr;
int start(int N, bool A[MAX_N][MAX_N]) {
queue<state>q;
for(int r=0;r<N;r++) {
int dg = count(A[r], A[r]+N, true);
for(int c=0;c<N;c++) {
if(c!=r) {
lf[c][r][0] = 1;
lf[c][r][1] = dg;
}
}
q.push({r,r,0});
q.push({r,r,1});
}
int calls = 0;
while(!q.empty()) {
state curr = q.front();
q.pop();
//if(curr.c == 0)
// cout<<curr.c<<" "<<curr.r<<" Last was: "<<curr.t<<" -> \n";
visited[curr.c][curr.r][curr.t] = true;
calls++;
if(curr.t) {
for(int i=0;i<N;i++) {
if((i==curr.c || A[curr.c][i]) && lf[i][curr.r][0]) {
//if(curr.c == 0)
// cout<<"calling: "<<i<<"with state 0"<<"\n";
lf[i][curr.r][0] = 0;
q.push({i, curr.r, 0});
nxt[i][curr.r] = curr.c;
}
}
}
else {
for(int i=0;i<N;i++) {
if(A[curr.r][i] && lf[curr.c][i][1]) {
//if(curr.c == 0)
// cout<<"calling: "<<i<<"with state 1"<<" left: "<<lf[curr.c][i][1]<<"\n";
lf[curr.c][i][1]--;
if(lf[curr.c][i][1] == 0) {
q.push({curr.c,i,1});
}
}
}
}
}
if(calls == 2 * N * N) return 0;
else return -1;
}
int nextMove(int R) {
return curr = nxt[curr][R];
}
