Submission #573949

#	Time	Username	Problem	Language	Result	Execution time	Memory
573949		Sho10	Hotter Colder (IOI10_hottercolder)	C++17	0 / 100	589 ms	139048 KiB

hottercolder

#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho
#include "grader.h"
using ll=long long;
using ld=long double;
int const INF=1000000005;
ll const LINF=1000000000000000005;
ll const mod=6700417;
ld const PI=3.14159265359;
ll const MAX_N=3e5+5;
ld const EPS=0.00000001;
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define endl '\n'
#define sz(a) (int)a.size()
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
int n,check=0,last=-1,cnt=0;
ll calc(ll st,ll dr){
return (st+dr)/2;
}
ll solve(ll l,ll r){
    //cout<<l<<' '<<r<<' '<<last<<' ';
    if(l==r){
        return l;
    }
    ll mid=(l+r)/2;
    if(last==1){
 mid=(l+r+1)/2;
 if(mid>r){
    mid--;
 }
    }
    //cout<<mid<<endl;
if(last==2||last==1){
    ll x=Guess(mid);
    if(x==0){
            if(last==1){
                return calc(l,mid);
            }else
        return calc(mid,r);
    }else if(x==-1){
        if(last==2){
        last=1;
    return solve(mid,r);
        }else if(last==1){
        last=2;
        return solve(l,mid);
        }
    }else if(x==1){
    last=-mid;
    return solve(calc(l,mid),calc(mid+1,r));
}
}else if(last!=1&&last!=2){
    ll mid=-last;
    ll x=Guess(r);
    if(x==0){
        return calc(mid,r);
    }else if(x==1){
    last=2;
    return solve(mid,r);
    }else {
    last=1;
    return solve(l,mid);
    }
}
}
int HC(int N){
    cnt=0;
if(N==1){
    return 1;
}
ll x=Guess(N);
last=2;
ll nr=solve(1,N);
return nr;
}

Compilation message (stderr)

hottercolder.cpp: In function 'int HC(int)':
hottercolder.cpp:76:4: warning: unused variable 'x' [-Wunused-variable]
   76 | ll x=Guess(N);
      |    ^
hottercolder.cpp: In function 'll solve(ll, ll)':
hottercolder.cpp:70:1: warning: control reaches end of non-void function [-Wreturn-type]
   70 | }
      | ^

• Subtask 1: 0 / 25
• Subtask 2: 0 / 25
• Subtask 3: 0 / 25
• Subtask 4: 0 / 25