oj.uz

Submission #1062526

# Submission time Handle Problem Language Result Execution time Memory
1062526 2024-08-17T08:16:13 Z Faisal_Saqib The Big Prize (IOI17_prize) C++17
20 / 100
 67 ms 1404 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define vll vector<ll>
#define all(x) begin(x),end(x)
#define pb push_back
 
std::vector<int> ask(int i);
map<int,vector<int>> mp;
vector<int> ask1(int i)
{
    if(mp.find(i)!=mp.end())return mp[i];
    return mp[i]=ask(i);
}
int find_best(int n)
{
    int ans=-1;
    int i=0;
    auto it1=ask1(0);
    while(1)
    {
        // cout<<"Starting from "<<i<<endl;
        int s=i,e=n;
        auto lasp=it1;
        if(lasp[0]==0 and lasp[1]==0)
            return i;
        while(s+1<e){
            int mid=(s+e)/2;
            auto it=ask1(mid);
            // cout<<"Checking "<<mid<<endl;
            // cout<<it1[0]<<' '<<it1[1]<<endl;
            // cout<<it[0]<<' '<<it[1]<<endl;
            if((it1[0]==it[0] and it1[1]==it[1]))
            {
                s=mid;
            }
            else{
                int cur_sum=it[0]+it[1];
                int back_sum=it1[0]+it1[1];
                // We want to know if there is any element greater than i in the [i,mid]
                if(back_sum<cur_sum)
                {
                    // it is smaller than current element
                    // can't  solve from here
                    // ll rp=rand()%2;
                    // if(rp)
                    // s=mid;
                    // Recursively call for both side
                    // or maybe stop binary search
                    i++;
                    it1=ask(i);
                    continue;
                }
                else{
                    e=mid;
                    lasp=it;                    
                }
            }
            // if((it[0]+it[1])!=((it1[0]+it1[1])))
            // {
            //     e=mid;
            // }
            // else{
            //     // if max(a1,a2,a3,..,an) <= k  
            //     // if this is the case
            //     // then it1[1]==it[1]
            //     // also it1[0]==it[0]
            //     s=mid;
 
            // }
        }
        // cout<<"Solved for "<<i<<' '<<s<<' '<<e<<endl;
        if(e==n)
        {
            break;
        }
        i=e;
        it1=lasp;
    }
    return i;
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:18:9: warning: unused variable 'ans' [-Wunused-variable]
   18 |     int ans=-1;
      |         ^~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 1 ms 344 KB Output is correct
5 Correct 1 ms 344 KB Output is correct
6 Correct 1 ms 344 KB Output is correct
7 Correct 0 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 344 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 3 ms 344 KB Output is correct
14 Correct 2 ms 344 KB Output is correct
15 Correct 6 ms 700 KB Output is correct
16 Partially correct 34 ms 1020 KB Partially correct - number of queries: 6894
17 Correct 1 ms 344 KB Output is correct
18 Partially correct 67 ms 1028 KB Partially correct - number of queries: 8086
19 Correct 0 ms 344 KB Output is correct
20 Correct 7 ms 600 KB Output is correct
21 Correct 12 ms 724 KB Output is correct
22 Correct 2 ms 344 KB Output is correct
23 Correct 0 ms 344 KB Output is correct
24 Correct 0 ms 344 KB Output is correct
25 Correct 24 ms 860 KB Output is correct
26 Correct 22 ms 840 KB Output is correct
27 Correct 1 ms 344 KB Output is correct
28 Partially correct 46 ms 1296 KB Partially correct - number of queries: 7618
29 Partially correct 26 ms 1216 KB Partially correct - number of queries: 5778
30 Partially correct 40 ms 1404 KB Partially correct - number of queries: 8017
31 Correct 1 ms 344 KB Output is correct
32 Correct 2 ms 344 KB Output is correct
33 Correct 0 ms 344 KB Output is correct
34 Correct 13 ms 508 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 8 ms 600 KB Output is correct
37 Correct 1 ms 344 KB Output is correct
38 Correct 0 ms 344 KB Output is correct
39 Correct 22 ms 796 KB Output is correct
40 Partially correct 31 ms 1104 KB Partially correct - number of queries: 6859
41 Correct 26 ms 744 KB Output is correct
42 Correct 26 ms 1104 KB Output is correct
43 Correct 21 ms 924 KB Output is correct
44 Correct 22 ms 852 KB Output is correct
45 Correct 13 ms 856 KB Output is correct
46 Correct 0 ms 344 KB Output is correct
47 Correct 18 ms 1204 KB Output is correct
48 Partially correct 44 ms 984 KB Partially correct - number of queries: 5986
49 Correct 3 ms 344 KB Output is correct
50 Partially correct 47 ms 1200 KB Partially correct - number of queries: 8083
51 Correct 15 ms 604 KB Output is correct
52 Correct 1 ms 344 KB Output is correct
53 Correct 1 ms 344 KB Output is correct
54 Correct 18 ms 856 KB Output is correct
55 Correct 1 ms 344 KB Output is correct
56 Partially correct 48 ms 1160 KB Partially correct - number of queries: 8082
57 Partially correct 30 ms 956 KB Partially correct - number of queries: 5892
58 Partially correct 36 ms 1200 KB Partially correct - number of queries: 5964
59 Correct 25 ms 848 KB Output is correct
60 Correct 29 ms 844 KB Output is correct
61 Correct 1 ms 344 KB Output is correct
62 Correct 1 ms 344 KB Output is correct
63 Correct 1 ms 344 KB Output is correct
64 Correct 1 ms 344 KB Output is correct
65 Correct 1 ms 432 KB Output is correct
66 Correct 1 ms 344 KB Output is correct
67 Correct 1 ms 428 KB Output is correct
68 Incorrect 2 ms 344 KB answer is not correct
69 Halted 0 ms 0 KB -