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Submission #986049

# Submission time Handle Problem Language Result Execution time Memory
986049 2024-05-19T16:53:38 Z AlphaMale06 The Big Prize (IOI17_prize) C++14
90 / 100
 61 ms 600 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<600; i++){
        int ind = i;
        vector<int> ans = ask(ind);
        summ=max(summ, ans[0]+ans[1]);
        if(ans[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);
        prev=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:47:1: warning: control reaches end of non-void function [-Wreturn-type]
   47 | }
      | ^

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 2 ms 600 KB Output is correct
3 Correct 2 ms 344 KB Output is correct
4 Correct 2 ms 344 KB Output is correct
5 Correct 2 ms 344 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 2 ms 340 KB Output is correct
8 Correct 2 ms 344 KB Output is correct
9 Correct 2 ms 344 KB Output is correct
10 Correct 3 ms 596 KB Output is correct

Subtask #2
70.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 344 KB Output is correct
2 Correct 3 ms 344 KB Output is correct
3 Correct 2 ms 344 KB Output is correct
4 Correct 2 ms 344 KB Output is correct
5 Correct 2 ms 432 KB Output is correct
6 Correct 0 ms 596 KB Output is correct
7 Correct 3 ms 344 KB Output is correct
8 Correct 2 ms 424 KB Output is correct
9 Correct 3 ms 344 KB Output is correct
10 Correct 2 ms 344 KB Output is correct
11 Correct 3 ms 344 KB Output is correct
12 Correct 3 ms 344 KB Output is correct
13 Correct 5 ms 596 KB Output is correct
14 Correct 4 ms 344 KB Output is correct
15 Correct 8 ms 344 KB Output is correct
16 Partially correct 37 ms 344 KB Partially correct - number of queries: 7539
17 Correct 2 ms 344 KB Output is correct
18 Partially correct 44 ms 344 KB Partially correct - number of queries: 8736
19 Correct 2 ms 344 KB Output is correct
20 Correct 10 ms 344 KB Output is correct
21 Correct 13 ms 344 KB Output is correct
22 Correct 4 ms 344 KB Output is correct
23 Correct 2 ms 344 KB Output is correct
24 Correct 3 ms 344 KB Output is correct
25 Partially correct 23 ms 344 KB Partially correct - number of queries: 5228
26 Partially correct 27 ms 344 KB Partially correct - number of queries: 5189
27 Correct 3 ms 344 KB Output is correct
28 Partially correct 57 ms 344 KB Partially correct - number of queries: 8368
29 Partially correct 35 ms 344 KB Partially correct - number of queries: 6477
30 Partially correct 34 ms 344 KB Partially correct - number of queries: 8667
31 Correct 2 ms 344 KB Output is correct
32 Correct 4 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 3 ms 344 KB Output is correct
36 Correct 12 ms 344 KB Output is correct
37 Correct 3 ms 600 KB Output is correct
38 Correct 3 ms 408 KB Output is correct
39 Correct 21 ms 340 KB Output is correct
40 Partially correct 31 ms 344 KB Partially correct - number of queries: 7489
41 Partially correct 29 ms 344 KB Partially correct - number of queries: 5477
42 Partially correct 29 ms 600 KB Partially correct - number of queries: 5477
43 Partially correct 20 ms 344 KB Partially correct - number of queries: 5004
44 Correct 15 ms 340 KB Output is correct
45 Correct 12 ms 344 KB Output is correct
46 Correct 2 ms 344 KB Output is correct
47 Correct 21 ms 344 KB Output is correct
48 Partially correct 28 ms 344 KB Partially correct - number of queries: 6624
49 Correct 10 ms 344 KB Output is correct
50 Partially correct 42 ms 344 KB Partially correct - number of queries: 8725
51 Correct 21 ms 344 KB Output is correct
52 Correct 3 ms 344 KB Output is correct
53 Correct 3 ms 344 KB Output is correct
54 Correct 21 ms 340 KB Output is correct
55 Correct 2 ms 344 KB Output is correct
56 Partially correct 42 ms 596 KB Partially correct - number of queries: 8733
57 Partially correct 27 ms 344 KB Partially correct - number of queries: 6540
58 Partially correct 41 ms 344 KB Partially correct - number of queries: 6642
59 Partially correct 30 ms 344 KB Partially correct - number of queries: 5477
60 Partially correct 26 ms 344 KB Partially correct - number of queries: 5123
61 Correct 4 ms 344 KB Output is correct
62 Correct 3 ms 344 KB Output is correct
63 Correct 5 ms 344 KB Output is correct
64 Correct 3 ms 344 KB Output is correct
65 Correct 4 ms 344 KB Output is correct
66 Correct 17 ms 344 KB Output is correct
67 Correct 3 ms 344 KB Output is correct
68 Correct 2 ms 344 KB Output is correct
69 Correct 17 ms 428 KB Output is correct
70 Correct 3 ms 344 KB Output is correct
71 Partially correct 38 ms 344 KB Partially correct - number of queries: 8871
72 Correct 5 ms 344 KB Output is correct
73 Partially correct 49 ms 344 KB Partially correct - number of queries: 8749
74 Partially correct 34 ms 344 KB Partially correct - number of queries: 8804
75 Correct 3 ms 344 KB Output is correct
76 Partially correct 37 ms 344 KB Partially correct - number of queries: 7631
77 Partially correct 36 ms 344 KB Partially correct - number of queries: 8769
78 Correct 5 ms 344 KB Output is correct
79 Correct 27 ms 344 KB Output is correct
80 Partially correct 46 ms 344 KB Partially correct - number of queries: 8755
81 Partially correct 40 ms 344 KB Partially correct - number of queries: 8753
82 Partially correct 49 ms 344 KB Partially correct - number of queries: 8693
83 Correct 3 ms 344 KB Output is correct
84 Partially correct 37 ms 344 KB Partially correct - number of queries: 7247
85 Partially correct 37 ms 344 KB Partially correct - number of queries: 8772
86 Partially correct 50 ms 344 KB Partially correct - number of queries: 9096
87 Correct 5 ms 344 KB Output is correct
88 Partially correct 61 ms 344 KB Partially correct - number of queries: 8610
89 Partially correct 43 ms 344 KB Partially correct - number of queries: 9024
90 Correct 4 ms 344 KB Output is correct
91 Partially correct 30 ms 344 KB Partially correct - number of queries: 5496
92 Partially correct 40 ms 344 KB Partially correct - number of queries: 8646
93 Partially correct 43 ms 344 KB Partially correct - number of queries: 9088
94 Partially correct 44 ms 344 KB Partially correct - number of queries: 9085
95 Partially correct 50 ms 344 KB Partially correct - number of queries: 9075
96 Partially correct 35 ms 344 KB Partially correct - number of queries: 8998
97 Partially correct 43 ms 344 KB Partially correct - number of queries: 8646