Submission #859458

#	Time	Username	Problem	Language	Result	Execution time	Memory
859458		thinknoexit	Prisoner Challenge (IOI22_prison)	C++17	Compilation error	0 ms	0 KiB

prison

#include <bits/stdc++.h>
#include "prison.h"
using namespace std;
using ll = long long;

vector<vector<int>> devise_strategy(int n) {
    vector<vector<int>> ans(37, vector<int>(n + 1));
    ans[0][0] = 1;
    for (int i = 1;i <= n;i++) {
        ans[0][i] = 36;
    }
    for (int i = 1;i <= 12;i++) {
        int a = i;
        ans[i][0] = 2;
        for (int j = 1;j <= n;j++) {
            if (!(j & (1 << (a - 1)))) ans[i][j] = -2;
            else ans[i][j] = 24 + a - 1;
        }
    }
    for (int i = 13;i <= 24;i++) {
        int a = i - 12;
        ans[i][0] = 2;
        for (int j = 1;j <= n;j++) {
            if (j & (1 << (a - 1))) ans[i][j] = -1;
            else ans[i][j] = 24 + a - 1;
        }
    }
    for (int i = 25;i <= 36;i++) {
        int a = i - 24;
        ans[i][0] = 1;
        for (int j = 1;j <= n;j++) {
            if (j & (1 << (a - 1))) ans[i][j] = a;
            else ans[i][j] = 12 + a;
        }
    }
    return ans;
}

int main() {
    int n, a, b;
    cin >> n >> a >> b;
    vector<vector<int>> adj = devise_strategy(n);
    int now = 0;
    int cnt = 0;
    while (now >= 0 && cnt <= 500) {
        cout << now << '\n';
        if (adj[now][0] == 1) {
            now = adj[now][a];
        }
        else {
            now = adj[now][b];
        }
        cnt++;
    }
    cout << cnt << ' ' << now;
}
/*
// a (1 <= a <= 12)
// - 0 -> start point (check A) go to leftmost bit 36
// - a (check B) if(B don't have ath bit) Answer B
//               else write 24 + a - 1
// - 12 + a (check B) if(B have ath bit) Answer A
//                    else write 24 + a - 1
// - 24 + a (check A) if(A have ath bit) write a-1
//                    else write 12 + a - 1
*/

Compilation message (stderr)

/usr/bin/ld: /tmp/ccJdQb91.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccKKhxm3.o:prison.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status