oj.uz

Submission #986039

# Submission time Handle Problem Language Result Execution time Memory
986039 2024-05-19T16:39:59 Z AlphaMale06 The Big Prize (IOI17_prize) C++17
20 / 100
 50 ms 756 KB 
#include <bits/stdc++.h>

#include "prize.h"

using namespace std;

//vector<int> ask(int i);

int find_best(int n){
	if(n<=5000){
        for(int i=0; i<n; i++){
            vector<int> ans = ask(i);
            if(ans[0]==0 && ans[1]==0)return i;
        }
	}
    int summ = 0;
    for(int i=0; i<50; i++){
        int ind = rand()%n;
        vector<int> ans = ask(ind);
        summ=max(summ, ans[0]+ans[1]);
        if(ans[0]==0 && ans[1]==0)return ind;
    }
    int prev=-1;
    for(int i=0; i<summ; i++){
        int l = prev+1, r = n-1;
        int best = n-1;
        while(l<=r){
            int s = l+r>>1;
            vector<int> ans = ask(s);
            if(ans[0]+ans[1]==0)return s;
            if(ans[0]+ans[1]==summ){
                if(ans[0]>i){
                    best=s-1;
                    r=s-1;
                }
                else l=s+1;
            }
            else{
                best = s;
                r=s-1;
            }
        }
        vector<int> ans = ask(best);
        if(ans[0]+ans[1]==0)return best;
    }
}

Compilation message

prize.cpp: In function 'int find_best(int)':
prize.cpp:28:22: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   28 |             int s = l+r>>1;
      |                     ~^~
prize.cpp:46:1: warning: control reaches end of non-void function [-Wreturn-type]
   46 | }
      | ^

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 1 ms 756 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 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 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 428 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 1 ms 344 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 344 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 2 ms 344 KB Output is correct
12 Correct 1 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 5 ms 600 KB Output is correct
16 Partially correct 26 ms 344 KB Partially correct - number of queries: 7350
17 Correct 1 ms 344 KB Output is correct
18 Partially correct 46 ms 344 KB Partially correct - number of queries: 8857
19 Correct 1 ms 344 KB Output is correct
20 Correct 7 ms 344 KB Output is correct
21 Correct 17 ms 344 KB Output is correct
22 Correct 3 ms 344 KB Output is correct
23 Correct 1 ms 344 KB Output is correct
24 Correct 1 ms 344 KB Output is correct
25 Correct 26 ms 344 KB Output is correct
26 Correct 22 ms 344 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Partially correct 43 ms 344 KB Partially correct - number of queries: 8390
29 Partially correct 27 ms 344 KB Partially correct - number of queries: 6283
30 Partially correct 49 ms 344 KB Partially correct - number of queries: 8792
31 Correct 1 ms 596 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 344 KB Output is correct
35 Correct 1 ms 344 KB Output is correct
36 Correct 12 ms 344 KB Output is correct
37 Correct 1 ms 344 KB Output is correct
38 Correct 1 ms 344 KB Output is correct
39 Correct 22 ms 344 KB Output is correct
40 Partially correct 38 ms 596 KB Partially correct - number of queries: 7511
41 Partially correct 22 ms 344 KB Partially correct - number of queries: 5087
42 Partially correct 21 ms 344 KB Partially correct - number of queries: 5087
43 Correct 16 ms 344 KB Output is correct
44 Correct 15 ms 344 KB Output is correct
45 Correct 11 ms 344 KB Output is correct
46 Correct 1 ms 344 KB Output is correct
47 Correct 25 ms 344 KB Output is correct
48 Partially correct 32 ms 344 KB Partially correct - number of queries: 6323
49 Correct 3 ms 344 KB Output is correct
50 Partially correct 50 ms 344 KB Partially correct - number of queries: 8866
51 Correct 14 ms 344 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 344 KB Output is correct
55 Correct 0 ms 344 KB Output is correct
56 Partially correct 42 ms 344 KB Partially correct - number of queries: 8883
57 Partially correct 29 ms 344 KB Partially correct - number of queries: 6232
58 Incorrect 40 ms 344 KB Incorrect
59 Halted 0 ms 0 KB -