This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include "prison.h"
#include <bits/stdc++.h>
using namespace std;
std::vector<std::vector<int>> devise_strategy(int n) {
vector<vector<int>> res(27, vector<int>(n + 1));
res[0][0] = 0; // bag A
for (int j = 1; j <= n; ++j) res[0][j] = 1 + (j >> 11 & 1);
for (int i = 1; i <= 13; ++i) {
int bag = i & 1; // look bag BABA alternating
for (int b = 0; b < 2; ++b) {
int x = i * 2 - 1 + b;
res[x][0] = bag;
for (int j = 1; j <= n; ++j) {
int c = j >> (12 - i) & 1;
if (c < b) {
if (bag == 0) { // looking A
res[x][j] = -1;
} else {
res[x][j] = -2;
}
} else if (c > b) {
if (bag == 0) {
res[x][j] = -2;
} else {
res[x][j] = -1;
}
} else if (i != 12) {
res[x][j] = i * 2 + 1 + (j >> (11 - i) & 1);
}
}
}
}
return res;
}
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