제출 #1203865

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1203865		nikolashami	The Big Prize (IOI17_prize)	C++20	컴파일 에러	0 ms	0 KiB

prize

#include<bits/stdc++.h>
using namespace std;
using ll=long long;

const ll L=500;

int find_best(int n){
	map<ll,ll>C;
	for(int i=0;i<L;++i){
		vector<int>a=ask(i);
		++C[a[0]+a[1]];
		if(!a[0]&&!a[1])return i;
	}
	ll x=0,lik=L-1,br,l,r;
	for(auto[u,v]:C)x=max(x,u);
	br=L-C[x];
	while(1){
		l=lik+1,r=n-1;
		while(l<=r){
			ll m=(l+r)/2;
			vector<int>a=ask(m);
			if(!a[0]&&!a[1])return i;
			else if(a[0]+a[1]==x){
				if(a[0]!=br)r=m-1;
				else l=m+1;
			}else{
				x=m;
				r=m-1;
			}
		}
		++br;
	}
	return -1;
}

컴파일 시 표준 에러 (stderr) 메시지

prize.cpp: In function 'int find_best(int)':
prize.cpp:10:30: error: 'ask' was not declared in this scope
   10 |                 vector<int>a=ask(i);
      |                              ^~~
prize.cpp:21:38: error: 'ask' was not declared in this scope
   21 |                         vector<int>a=ask(m);
      |                                      ^~~
prize.cpp:22:48: error: 'i' was not declared in this scope
   22 |                         if(!a[0]&&!a[1])return i;
      |                                                ^