Submission #909326

#TimeUsernameProblemLanguageResultExecution timeMemory
909326emptypringlescanCoreputer (IOI23_coreputer)C++17
80 / 100
1 ms596 KiB
#include <bits/stdc++.h>
using namespace std;
#include "coreputer.h"
vector<int> malfunctioning_cores(int n){
	int lo=0,hi=n-1,mid;
	int st=-1;
	while(lo<hi){
		mid=(lo+hi)/2;
		vector<int> arr(mid+1);
		for(int i=0; i<=mid; i++) arr[i]=i;
		int x=run_diagnostic(arr);
		if(x==-1) lo=mid+1;
		else hi=mid,st=x;
	}
	vector<int> ans(n);
	ans[lo]=1;
	if(lo==n-1){
		for(int i=0; i<n-1; i++) ans[i]=0;
		return ans;
	}
	vector<int> qu(lo+1);
	for(int i=0; i<=lo; i++) qu[i]=i;
	for(int i=lo+1; i<n; i++){
		qu[lo]=i;
		int x=run_diagnostic(qu);
		if(x==-1) ans[i]=0;
		else ans[i]=1;
	}
	vector<int> qu2(lo);
	for(int i=0; i<lo; i++) qu2[i]=i;
	for(int i=lo-1; i>=0; i--){
		qu2[i]=lo;
		int x=run_diagnostic(qu2);
		if(x==-1) ans[i]=1;
		else ans[i]=0,st=x;
		qu2[i]=i;
	}
	assert(st!=-1);
	return ans;
}

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