Submission #1074575

#	Time	Username	Problem	Language	Result	Execution time	Memory
1074575		beaconmc	Hotter Colder (IOI10_hottercolder)	C++14	77.88 / 100	2437 ms	8024 KiB

hottercolder

    #include "grader.h"
        #include <bits/stdc++.h>
         
        typedef long long ll;
         
        #define FOR(i,x,y) for(ll i=x; i<y; i++)
        #define FORNEG(i,x,y) for(lli = x; i>y; i--)
        using namespace std;
         
         
        ll n;
        map<ll,ll> sus;
        ll cnt = 0;
        ll idkman = -1;
        int guess(ll a){
         
           if (a==0) return -1;
           if (a==n+1) return -1;
           cnt++;
           idkman = a;
           return Guess(a);
         
        }
        int solve(int a, int b){
           if (a==b) return a;
           
           ll lmao = rand()%2;
           // cout << lmao << endl;
           // cout << a << " " << b << endl;
         
           
           if (idkman == (a+b)/2  && n>500 && (b-a+1)>5){
              // cout << "LMAO" << endl;
              ll mid = idkman;
              ll right = guess(idkman+1);
              if (right == -1){
                 return solve(a, mid);
              }else{
                 return solve(mid+1, b);
              }
           }
           else{
         
              if (lmao == 0){
                 ll mid = (a+b)/2;
                 ll midleft = (a+mid)/2;
                 ll midright = (b+mid+1)/2;
         
                 ll left, right;
                 left = guess(midleft);
                 right = guess(midright);
                 if (right == 0 ){
                    return (midleft+midright)/2;
                 }
                 else if (right == -1){
                    if ((midleft+midright)%2==0) return solve(a, mid-1);
                    return solve(a,mid);
                 }else{
                    return solve(mid+1, b);
                 }
              } else{
                 ll mid = (a+b)/2;
                 ll midleft = (a+mid)/2;
                 ll midright = (b+mid+1)/2;
         
                 ll left, right;
                 right = guess(midright);
                 left = guess(midleft);
                 
                 if (left == 0 ){
                    return (midleft+midright)/2;
                 }
                 else if (left == -1){
                    return solve(mid+1, b);
                 }else{
                    if ((midleft+midright)%2==0 && n<=500) return solve(a, mid-1);
                    return solve(a,mid);
                 }
              }
         
         
           }
        }
         
         
        int HC(int N){
           idkman = -1;
           srand(time(0));
           sus.clear();
           n = N;
           cnt = 0;
           ll ans = solve(1,N);
     
           return ans;
        }

Compilation message (stderr)

hottercolder.cpp: In function 'int solve(int, int)':
hottercolder.cpp:49:21: warning: variable 'left' set but not used [-Wunused-but-set-variable]
   49 |                  ll left, right;
      |                     ^~~~
hottercolder.cpp:66:27: warning: variable 'right' set but not used [-Wunused-but-set-variable]
   66 |                  ll left, right;
      |                           ^~~~~

• Subtask 1: 25 / 25
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 2.884615385 / 25