#include "bits/stdc++.h"
//~ #include "prize.h"
#define MAXN 100009
#define INF 1000000007
#define mp(x,y) make_pair(x,y)
#define all(v) v.begin(),v.end()
#define pb(x) push_back(x)
#define wr cout<<"----------------"<<endl;
#define ppb() pop_back()
#define tr(ii,c) for(__typeof((c).begin()) ii=(c).begin();ii!=(c).end();ii++)
#define ff first
#define ss second
#define my_little_dodge 46
#define debug(x) cerr<< #x <<" = "<< x<<endl;
using namespace std;
typedef long long ll;
typedef pair<int,int> PII;
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
//~ vector<int>arr;
//~ int cnt=0;
//~ vector<int>ask(int x){
//~ int a=0,b=0;
//~ for(int i=0;i<x;i++)
//~ a+=(arr[x]>arr[i]);
//~ for(int i=x+1;i<(int)arr.size();i++)
//~ b+=(arr[x]>arr[i]);
//~ vector<int>v;v.pb(a);v.pb(b);
//~ cnt++;
//~ return v;
//~ }
const int C=1000;
int find_best(int n){
int mx=0;
for(int i=0;i<n;i++){
vector<int>res=ask(i);
if(res[0]+res[1]==0)
return i;
umax(mx,res[0]+res[1]);
if(res[0]+res[1]<mx)
continue;
if(i+C<n and ask(i+C)==res){
i+=C;
continue;
}
int st=i+1,en=min(n-1,i+C);
while(st<=en){
int mid=(st+en)>>1;
if(ask(mid)==res){
i=mid;
st=mid+1;
}
else
en=mid-1;
}
}
return -1;
}
//~ int main(){
//~ freopen("file.in", "r", stdin);
//~ int n;
//~ scanf("%d",&n);
//~ for(int i=0;i<n;i++){
//~ int x;
//~ scanf("%d",&x);
//~ arr.pb(x);
//~ }
//~ for(int i=0;i<n;i++)
//~ if(arr[i]==1){
//~ if(find_best(n)==i)
//~ puts("ok");
//~ else
//~ puts("wa");
//~ debug(cnt);
//~ return 0;
//~ }
//~ return 0;
//~ }
Compilation message
prize.cpp: In function 'int find_best(int)':
prize.cpp:37:18: error: 'ask' was not declared in this scope
vector<int>res=ask(i);
^~~
