Submission #630616

#	Time	Username	Problem	Language	Result	Execution time	Memory
630616		handlename	Prisoner Challenge (IOI22_prison)	C++17	0 / 100	0 ms	212 KiB

prison

#include <bits/stdc++.h>
//#include "prison.h"
using namespace std;
#define pb push_back
#define mp make_pair
int conv(int id){
	if (id==0) return -1;
	return -2;
}
int numbitt(int x){
	int res=0;
	while (x>0){
		x/=3;
		res++;
	}
	return res;
}
int bitt(int x,int bit){
	while (bit--) x/=3;
	return x%3;
}
vector<vector<int> > devise_strategy(int n){
	int numbit=numbitt(n);
	vector<vector<int> > ans(numbit*3-1,vector<int>(n+1,0));
	ans[0][0]=0;
	for (int j=1;j<=n;j++){
		ans[0][j]=bitt(j,numbit-1)+1;
	}
	for (int i=1;i<(int)ans.size();i++){
		int lol=(i+2)/3;
		if (lol%2==0) ans[i][0]=0;
		else ans[i][0]=1;
		int bit=numbit-lol;
		for (int j=1;j<=n;j++){
          	if (bit==0){
              	if (bitt(j,bit)==0) ans[i][j]=conv(ans[i][0]);
              	else if (bitt(j,bit)==2) ans[i][j]=conv(1-ans[i][0]);
              	else ans[i][j]=0;
              	continue;
            }
			if ((i-1)%3<bitt(j,bit) || j==n){
				ans[i][j]=conv(1-ans[i][0]);
			}
			else if ((i-1)%3>bitt(j,bit) || j==1){
				ans[i][j]=conv(ans[i][0]);
			}
			else {
				if (bit>1) ans[i][j]=lol*3+1+bitt(j,bit-1);
              	else ans[i][j]=lol*3+1;
			}
		}
	}
	return ans;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 5
• Subtask 3: 0 / 90