Submission #625795

#	Time	Username	Problem	Language	Result	Execution time	Memory
625795		MODDI	Prisoner Challenge (IOI22_prison)	C++17	0 / 100	0 ms	212 KiB

prison

#include "prison.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define pll pair<ll,ll>
#define vi vector<int>
#define vl vector<ll>
#define mp make_pair
#define pb push_back
using namespace std;
ll set_on(int n, int k){
	return (n |= 1 << k);
}
ll set_off(int n, int k){
	return (n &= ~(1UL << k));
}
bool check_bit(int n, int k){
	int bit = (n >> k) & 1U;
	if(bit == 1)
		return true;
	return false;
}
vector<vector<int>> devise_strategy(int N) {
	vector<vector<int> > s(25, vector<int>(N+1));
	s[0][0] = 0;
	for(int i = 1; i <= N; i++){
		for(int bit = 12; bit >= 0; bit--){
			if(check_bit(i, bit)){
				s[0][i] = bit; // od levo kon desno
				break;
			}
			else
				continue;
		}
	}
	for(int i = 1; i <= 12; i++){
		s[i][0] = 1;
		for(int j = 1; j <= N; j++){
			bool found = false;
			for(int bit = 12; bit > i; bit--){
				if(check_bit(j, bit)){
					found = true;
					break;
				}
			}
			if(found){
				s[i][j] = -1;
			}
			else{
				if(!check_bit(j, i))
					s[i][j]=-2;
				else{
					for(int bit = i-1; bit >= 0; bit--){
						if(check_bit(j, bit)){
							s[i][j] = bit+13;
							found=true;
							break;
						}
					}
				}
			}
		}
	}
	for(int i = 13; i <= 24; i++){
		s[i][0] = 0;
		int x = i - 13;
		for(int j = 1; j <= N; j++){
			bool found = false;
			for(int bit = 12; bit > x; bit--){
				if(check_bit(j, bit)){
					found = true;
					break;
				}
				else
					continue;
			}
			if(found)
				s[i][j]=-2;
			else{
				if(!check_bit(j, x)){
					s[i][j]=-1;
				}
				else{
					for(int bit = x - 1; bit >= 0; bit--){
						if(check_bit(j, bit)){
							s[i][j] = bit;
							found = true;
							break;
						}
					}
				}
			}
		}
	}
	return s;
}

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