oj.uz

Submission #89238

# Submission time Handle Problem Language Result Execution time Memory
89238 2018-12-11T05:55:10 Z zoomswk The Big Prize (IOI17_prize) C++17
97.41 / 100
 59 ms 584 KB 
#include "prize.h"
#include <vector>
#include <algorithm>
using namespace std;

int m, res;
bool flag = false;

void solve(int l, int r, int num, int bef){
    if(num == 0) return;
    if(l > r) return;
    int mid = (l+r)/2;
    vector<int> resp = ask(mid);
    if(resp[0]+resp[1] == 0){
        res = mid;
        flag = true;
        return;
    }
    int b = mid;
    while(resp[0]+resp[1] != m && b < r){
        b++;
        resp = ask(b);
        if(resp[0]+resp[1] == 0){
            res = b;
            flag = true;
            return;
        }
    }
    if(resp[0]+resp[1] == m){
        solve(l, mid-1, resp[0]-(b-mid)-bef, bef);
        if(flag) return;
        solve(b+1, r, num-(resp[0]-bef), resp[0]);
        if(flag) return;
    } else{
        solve(l, mid-1, num, bef);
    }
    return;
}

int find_best(int n) {
    if(n <= 3000){
        for(int i=0; i<n; i++){
            vector<int> resp = ask(i);
            if(resp[0]+resp[1] == 0) return i;
        }
    }
    vector<int> resp;
    for(int i=0; i<500; i++){
        resp = ask(i);
        if(resp[0]+resp[1] == 0) return i;
        m = max(m, resp[0]+resp[1]);
    }
    
    solve(0, n-1, m, 0);
    
    return res;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 392 KB Output is correct
2 Correct 7 ms 392 KB Output is correct
3 Correct 7 ms 392 KB Output is correct
4 Correct 4 ms 532 KB Output is correct
5 Correct 7 ms 532 KB Output is correct
6 Correct 2 ms 532 KB Output is correct
7 Correct 7 ms 532 KB Output is correct
8 Correct 8 ms 532 KB Output is correct
9 Correct 4 ms 544 KB Output is correct
10 Correct 4 ms 544 KB Output is correct

Subtask #2
77.41 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 556 KB Output is correct
2 Correct 7 ms 556 KB Output is correct
3 Correct 4 ms 556 KB Output is correct
4 Correct 10 ms 556 KB Output is correct
5 Correct 7 ms 556 KB Output is correct
6 Correct 2 ms 556 KB Output is correct
7 Correct 8 ms 556 KB Output is correct
8 Correct 6 ms 556 KB Output is correct
9 Correct 7 ms 556 KB Output is correct
10 Correct 7 ms 556 KB Output is correct
11 Correct 9 ms 556 KB Output is correct
12 Correct 8 ms 556 KB Output is correct
13 Correct 12 ms 556 KB Output is correct
14 Correct 11 ms 556 KB Output is correct
15 Correct 16 ms 556 KB Output is correct
16 Correct 42 ms 556 KB Output is correct
17 Correct 6 ms 556 KB Output is correct
18 Correct 47 ms 556 KB Output is correct
19 Correct 6 ms 556 KB Output is correct
20 Correct 16 ms 560 KB Output is correct
21 Correct 20 ms 560 KB Output is correct
22 Correct 13 ms 560 KB Output is correct
23 Correct 4 ms 560 KB Output is correct
24 Correct 6 ms 560 KB Output is correct
25 Correct 27 ms 560 KB Output is correct
26 Correct 27 ms 560 KB Output is correct
27 Correct 4 ms 572 KB Output is correct
28 Correct 27 ms 572 KB Output is correct
29 Correct 34 ms 572 KB Output is correct
30 Correct 43 ms 572 KB Output is correct
31 Correct 6 ms 572 KB Output is correct
32 Correct 10 ms 572 KB Output is correct
33 Correct 2 ms 572 KB Output is correct
34 Correct 18 ms 572 KB Output is correct
35 Correct 8 ms 572 KB Output is correct
36 Correct 15 ms 572 KB Output is correct
37 Correct 8 ms 572 KB Output is correct
38 Correct 5 ms 572 KB Output is correct
39 Correct 12 ms 572 KB Output is correct
40 Correct 47 ms 572 KB Output is correct
41 Correct 33 ms 572 KB Output is correct
42 Correct 37 ms 572 KB Output is correct
43 Correct 25 ms 572 KB Output is correct
44 Correct 23 ms 572 KB Output is correct
45 Correct 10 ms 572 KB Output is correct
46 Correct 6 ms 572 KB Output is correct
47 Correct 25 ms 572 KB Output is correct
48 Correct 17 ms 572 KB Output is correct
49 Correct 11 ms 572 KB Output is correct
50 Correct 55 ms 572 KB Output is correct
51 Correct 25 ms 572 KB Output is correct
52 Correct 6 ms 572 KB Output is correct
53 Correct 5 ms 584 KB Output is correct
54 Correct 25 ms 584 KB Output is correct
55 Correct 4 ms 584 KB Output is correct
56 Correct 49 ms 584 KB Output is correct
57 Correct 36 ms 584 KB Output is correct
58 Correct 32 ms 584 KB Output is correct
59 Correct 38 ms 584 KB Output is correct
60 Correct 32 ms 584 KB Output is correct
61 Correct 9 ms 584 KB Output is correct
62 Correct 7 ms 584 KB Output is correct
63 Correct 4 ms 584 KB Output is correct
64 Correct 8 ms 584 KB Output is correct
65 Correct 9 ms 584 KB Output is correct
66 Correct 11 ms 584 KB Output is correct
67 Correct 11 ms 584 KB Output is correct
68 Correct 5 ms 584 KB Output is correct
69 Correct 12 ms 584 KB Output is correct
70 Correct 11 ms 584 KB Output is correct
71 Partially correct 59 ms 584 KB Partially correct - number of queries: 5259
72 Correct 14 ms 584 KB Output is correct
73 Partially correct 51 ms 584 KB Partially correct - number of queries: 5196
74 Partially correct 50 ms 584 KB Partially correct - number of queries: 5223
75 Correct 9 ms 584 KB Output is correct
76 Correct 24 ms 584 KB Output is correct
77 Correct 24 ms 584 KB Output is correct
78 Correct 11 ms 584 KB Output is correct
79 Correct 14 ms 584 KB Output is correct
80 Correct 52 ms 584 KB Output is correct
81 Correct 23 ms 584 KB Output is correct
82 Correct 44 ms 584 KB Output is correct
83 Correct 9 ms 584 KB Output is correct
84 Correct 23 ms 584 KB Output is correct
85 Correct 50 ms 584 KB Output is correct
86 Correct 11 ms 584 KB Output is correct
87 Correct 7 ms 584 KB Output is correct
88 Correct 12 ms 584 KB Output is correct
89 Correct 9 ms 584 KB Output is correct
90 Correct 6 ms 584 KB Output is correct
91 Correct 5 ms 584 KB Output is correct
92 Correct 6 ms 584 KB Output is correct
93 Correct 16 ms 584 KB Output is correct
94 Correct 18 ms 584 KB Output is correct
95 Correct 14 ms 584 KB Output is correct
96 Correct 13 ms 584 KB Output is correct
97 Correct 13 ms 584 KB Output is correct