#include <bits/stdc++.h>
#include "prison.h"
// #include "grader.cpp"
using namespace std;
int digit(int x, int i){
for (int j = 0; j < 7 - i; j ++)
x /= 3;
return x % 3;
}
vector<vector<int>> devise_strategy(int n) {
vector<vector<int>> res;
res.resize(32);
for (int i = 0; i < 32; i ++){
res[i].resize(n + 1);
if (i < 8) res[i][0] = 0;
else res[i][0] = 1;
for (int j = 1; j <= n; j ++){
if (i < 8) res[i][j] = i + 8 * (1 + digit(j, i));
else{
int prv = i / 8;
int nxt = 1 + digit(j, i % 8);
if (prv == nxt)
res[i][j] = 1 + (i % 8);
else if (prv < nxt)
res[i][j] = -1;
else
res[i][j] = -2;
}
}
}
return res;
}
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