Submission #1077152

#	Time	Username	Problem	Language	Result	Execution time	Memory
1077152		pcc	Prisoner Challenge (IOI22_prison)	C++17	30 / 100	545 ms	2896 KiB

prison

#include "prison.h"

#include <vector>
#include <bits/stdc++.h>
using namespace std;

std::vector<std::vector<int>> devise_strategy(int N) {
	int ans = 13*2*2;//nowbit,turn,bit of a
	vector<vector<int>> re(ans,vector<int>(N+1,-1));
	for(int i = 0;i<ans;i++){
		int turn = ((i>>1)&1);
		int tar = 12-(i>>2);
		int bit = i&1;
		if(turn == 0)re[i][0] = 0;
		else re[i][0] = 1;
		for(int j = 1;j<=N;j++){
			if(turn == 0){
				re[i][j] = (i/4*4)|2|((j>>tar)&1);
			}
			else{
				if(bit != ((j>>tar)&1)){
					if((j>>tar)&1)re[i][j] = -1;
					else re[i][j] = -2;
				}
				else{
					re[i][j] = ((i/4+1)*4);
					if(re[i][j]>=ans)re[i][j] = -1;
				}
			}
		}
	}
	for(int i = 0;i<ans;i++){
		if(re[i][0] < 0)re[i][0] = 0;
		for(int j = 0;j<=N;j++)assert(re[i][j]<ans);
		cerr<<i<<":";
		for(int j = 0;j<=N;j++)cerr<<re[i][j]<<' ';cerr<<endl;
	}
	cerr<<"INIT DONE!"<<endl;
	return re;
}

Compilation message (stderr)

prison.cpp: In function 'std::vector<std::vector<int> > devise_strategy(int)':
prison.cpp:36:3: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   36 |   for(int j = 0;j<=N;j++)cerr<<re[i][j]<<' ';cerr<<endl;
      |   ^~~
prison.cpp:36:46: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   36 |   for(int j = 0;j<=N;j++)cerr<<re[i][j]<<' ';cerr<<endl;
      |                                              ^~~~

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 20 / 90