Submission #835841

#	Time	Username	Problem	Language	Result	Execution time	Memory
835841		oscar1f	The Big Prize (IOI17_prize)	C++17	93.04 / 100	57 ms	348 KiB

prize

#include<bits/stdc++.h>
#include "prize.h"
 
using namespace std;
 
int nbVal,nbPasMax,rep=-1;
 
void calc(int deb,int fin,int nbGau,int nbDro) {
	if (fin<deb or nbGau+nbDro==nbPasMax or rep!=-1) {
		return;
	}
	int mid=(deb+fin)/2;
	vector<int> ans=ask(mid);
	if (ans[0]+ans[1]<nbPasMax) {
		if (ans[0]+ans[1]==0) {
			rep=mid;
		}
		calc(deb,mid-1,nbGau,ans[1]+1);
		calc(mid+1,fin,ans[0]+1,nbDro);
	}
	else {
		calc(deb,mid-1,nbGau,ans[1]);
		calc(mid+1,fin,ans[0],nbDro);
	}
}
 
int find_best(int n) {
	nbVal=n;
	vector<int> ans;
	for (int i=0;i<min(474,nbVal);i++) {
		ans=ask(i);
		nbPasMax=max(nbPasMax,ans[0]+ans[1]);
	}
	calc(0,nbVal-1,0,0);
	return rep;
}

• Subtask 1: 20 / 20
• Subtask 2: 73.04 / 80