#include "prize.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
#define lol long long
#define pii pair<int,int>
#define OK puts("OK");
#define NO puts("NO");
#define YES puts("YES");
#define fr first
#define sc second
#define ret return
#define scanl(a) scanf("%lld",&a);
#define scanll(a,b) scanf("%lld %lld",&a, &b);
#define scanlll(a,b,c) scanf("%lld %lld %lld",&a,&b,&c);
#define scan1(a) scanf("%d",&a);
#define scan2(a,b) scanf("%d %d",&a, &b);
#define scan3(a,b,c) scanf("%d %d %d",&a,&b,&c);
#define all(s) s.begin(),s.end()
#define allr(s) s.rbegin()Ñ,s.rend()
#define pb push_back
#define sz(v) (int)v.size()
#define endi puts("");
#define eps 1e-12
const int N = 3e5+12,INF=1e9+7;
int find_best(int n) {
int mx=0,i,ll=0,rr=n-1;
while (ll < rr){
vector <int> x = ask(ll);
mx = max(mx,x[0]+x[1]);
if (mx == (x[0]+x[1])){
int l = ll,r = rr;
while (r >= l){
int m = l+r>>1;
vector <int> y = ask(m);
if (y == x){
ll = m;
l = m+1;
}
else r = m-1;
}
}
vector <int> y = ask(rr);
mx = max(mx,y[0]+y[1]);
if (mx == (y[0]+y[1])){
int l = ll,r = rr;
while (r >= l){
int m = l+r>>1;
vector <int> z = ask(m);
if (y == z){
rr = m;
r = m-1;
}
else l = m+1;
}
}
ll++;
rr--;
}
ret ll;
}
