oj.uz

Submission #89252

# Submission time Handle Problem Language Result Execution time Memory
89252 2018-12-11T06:17:18 Z zoomswk The Big Prize (IOI17_prize) C++17
97.61 / 100
 58 ms 608 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 <= 5000){
        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 x=0; x<480; x++){
        int i = x*n/500;
        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 7 ms 392 KB Output is correct
2 Correct 7 ms 392 KB Output is correct
3 Correct 6 ms 404 KB Output is correct
4 Correct 4 ms 608 KB Output is correct
5 Correct 3 ms 608 KB Output is correct
6 Correct 2 ms 608 KB Output is correct
7 Correct 5 ms 608 KB Output is correct
8 Correct 5 ms 608 KB Output is correct
9 Correct 4 ms 608 KB Output is correct
10 Correct 6 ms 608 KB Output is correct

Subtask #2
77.61 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 608 KB Output is correct
2 Correct 5 ms 608 KB Output is correct
3 Correct 5 ms 608 KB Output is correct
4 Correct 6 ms 608 KB Output is correct
5 Correct 3 ms 608 KB Output is correct
6 Correct 2 ms 608 KB Output is correct
7 Correct 3 ms 608 KB Output is correct
8 Correct 4 ms 608 KB Output is correct
9 Correct 7 ms 608 KB Output is correct
10 Correct 6 ms 608 KB Output is correct
11 Correct 10 ms 608 KB Output is correct
12 Correct 4 ms 608 KB Output is correct
13 Correct 8 ms 608 KB Output is correct
14 Correct 8 ms 608 KB Output is correct
15 Correct 13 ms 608 KB Output is correct
16 Correct 28 ms 608 KB Output is correct
17 Correct 4 ms 608 KB Output is correct
18 Correct 44 ms 608 KB Output is correct
19 Correct 4 ms 608 KB Output is correct
20 Correct 18 ms 608 KB Output is correct
21 Correct 25 ms 608 KB Output is correct
22 Correct 13 ms 608 KB Output is correct
23 Correct 7 ms 608 KB Output is correct
24 Correct 4 ms 608 KB Output is correct
25 Correct 29 ms 608 KB Output is correct
26 Correct 28 ms 608 KB Output is correct
27 Correct 8 ms 608 KB Output is correct
28 Correct 51 ms 608 KB Output is correct
29 Correct 38 ms 608 KB Output is correct
30 Correct 28 ms 608 KB Output is correct
31 Correct 6 ms 608 KB Output is correct
32 Correct 5 ms 608 KB Output is correct
33 Correct 2 ms 608 KB Output is correct
34 Correct 22 ms 608 KB Output is correct
35 Correct 4 ms 608 KB Output is correct
36 Correct 7 ms 608 KB Output is correct
37 Correct 8 ms 608 KB Output is correct
38 Correct 4 ms 608 KB Output is correct
39 Correct 23 ms 608 KB Output is correct
40 Correct 19 ms 608 KB Output is correct
41 Correct 14 ms 608 KB Output is correct
42 Correct 15 ms 608 KB Output is correct
43 Correct 13 ms 608 KB Output is correct
44 Correct 23 ms 608 KB Output is correct
45 Correct 19 ms 608 KB Output is correct
46 Correct 7 ms 608 KB Output is correct
47 Correct 22 ms 608 KB Output is correct
48 Correct 38 ms 608 KB Output is correct
49 Correct 10 ms 608 KB Output is correct
50 Correct 42 ms 608 KB Output is correct
51 Correct 50 ms 608 KB Output is correct
52 Correct 8 ms 608 KB Output is correct
53 Correct 8 ms 608 KB Output is correct
54 Correct 28 ms 608 KB Output is correct
55 Correct 7 ms 608 KB Output is correct
56 Correct 50 ms 608 KB Output is correct
57 Correct 16 ms 608 KB Output is correct
58 Correct 30 ms 608 KB Output is correct
59 Correct 14 ms 608 KB Output is correct
60 Correct 28 ms 608 KB Output is correct
61 Correct 8 ms 608 KB Output is correct
62 Correct 8 ms 608 KB Output is correct
63 Correct 7 ms 608 KB Output is correct
64 Correct 6 ms 608 KB Output is correct
65 Correct 4 ms 608 KB Output is correct
66 Correct 8 ms 608 KB Output is correct
67 Correct 11 ms 608 KB Output is correct
68 Correct 7 ms 608 KB Output is correct
69 Correct 5 ms 608 KB Output is correct
70 Correct 8 ms 608 KB Output is correct
71 Partially correct 23 ms 608 KB Partially correct - number of queries: 5239
72 Correct 7 ms 608 KB Output is correct
73 Partially correct 55 ms 608 KB Partially correct - number of queries: 5175
74 Partially correct 39 ms 608 KB Partially correct - number of queries: 5202
75 Correct 7 ms 608 KB Output is correct
76 Correct 41 ms 608 KB Output is correct
77 Correct 41 ms 608 KB Output is correct
78 Correct 5 ms 608 KB Output is correct
79 Correct 29 ms 608 KB Output is correct
80 Correct 49 ms 608 KB Output is correct
81 Partially correct 45 ms 608 KB Partially correct - number of queries: 5004
82 Correct 23 ms 608 KB Output is correct
83 Correct 9 ms 608 KB Output is correct
84 Correct 41 ms 608 KB Output is correct
85 Correct 46 ms 608 KB Output is correct
86 Correct 26 ms 608 KB Output is correct
87 Correct 12 ms 608 KB Output is correct
88 Correct 41 ms 608 KB Output is correct
89 Correct 40 ms 608 KB Output is correct
90 Correct 8 ms 608 KB Output is correct
91 Correct 15 ms 608 KB Output is correct
92 Correct 39 ms 608 KB Output is correct
93 Correct 43 ms 608 KB Output is correct
94 Correct 31 ms 608 KB Output is correct
95 Correct 47 ms 608 KB Output is correct
96 Correct 58 ms 608 KB Output is correct
97 Correct 52 ms 608 KB Output is correct