Submission #371417

#	Time	Username	Problem	Language	Result	Execution time	Memory
371417		leinad2	The Big Prize (IOI17_prize)	C++17	20 / 100	93 ms	6124 KiB

prize

#include "prize.h"
#include<bits/stdc++.h>
using namespace std;
int A[200010];
vector<int>B[200010];
int find_best(int n)
{
  int c=0;
    while(1)
    {
      c++;if(c>=500)return 1;
        int a=0, b=n-1;
        while(a<b)
        {
            int m=a+b>>1;
            vector<int>v;
            if(B[m].size())v=B[m];
            else v=ask(m);
            B[m]=v;
            if(v[0]+v[1]==0)return m;
            if(v[1]>A[m+1])a=m+1;
            else b=m;
        }
        vector<int>v;
        if(B[a].size())v=B[a];
        else v=ask(a);
        B[a]=v;
        if(v[0]+v[1]==0)return a;
        for(int i=0;i<=a;i++)A[i]++;
    }
}

Compilation message (stderr)

prize.cpp: In function 'int find_best(int)':
prize.cpp:15:20: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   15 |             int m=a+b>>1;
      |                   ~^~

• Subtask 1: 20 / 20
• Subtask 2: 0 / 80