Submission #89248

# Submission time Handle Problem Language Result Execution time Memory
89248 2018-12-11T06:06:49 Z zoomswk The Big Prize (IOI17_prize) C++17
97.61 / 100
58 ms 628 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;
    int cnt=0;
    for(int i=0; i<480; i++){
        resp = ask(i);
        if(resp[0]+resp[1] == 0) return i;
        if(resp[0]+resp[1] < m) cnt++;
        else if(resp[0]+resp[1] > m) cnt = i;
        m = max(m, resp[0]+resp[1]);
    }
    
    solve(0, n-1, m, 0);
    
    return res;
}
# Verdict Execution time Memory Grader output
1 Correct 6 ms 248 KB Output is correct
2 Correct 4 ms 480 KB Output is correct
3 Correct 6 ms 480 KB Output is correct
4 Correct 4 ms 532 KB Output is correct
5 Correct 4 ms 532 KB Output is correct
6 Correct 2 ms 576 KB Output is correct
7 Correct 7 ms 576 KB Output is correct
8 Correct 7 ms 576 KB Output is correct
9 Correct 6 ms 576 KB Output is correct
10 Correct 6 ms 628 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 7 ms 628 KB Output is correct
2 Correct 8 ms 628 KB Output is correct
3 Correct 4 ms 628 KB Output is correct
4 Correct 6 ms 628 KB Output is correct
5 Correct 6 ms 628 KB Output is correct
6 Correct 2 ms 628 KB Output is correct
7 Correct 4 ms 628 KB Output is correct
8 Correct 4 ms 628 KB Output is correct
9 Correct 4 ms 628 KB Output is correct
10 Correct 4 ms 628 KB Output is correct
11 Correct 6 ms 628 KB Output is correct
12 Correct 4 ms 628 KB Output is correct
13 Correct 5 ms 628 KB Output is correct
14 Correct 8 ms 628 KB Output is correct
15 Correct 9 ms 628 KB Output is correct
16 Correct 19 ms 628 KB Output is correct
17 Correct 4 ms 628 KB Output is correct
18 Correct 31 ms 628 KB Output is correct
19 Correct 4 ms 628 KB Output is correct
20 Correct 9 ms 628 KB Output is correct
21 Correct 20 ms 628 KB Output is correct
22 Correct 11 ms 628 KB Output is correct
23 Correct 6 ms 628 KB Output is correct
24 Correct 8 ms 628 KB Output is correct
25 Correct 28 ms 628 KB Output is correct
26 Correct 26 ms 628 KB Output is correct
27 Correct 9 ms 628 KB Output is correct
28 Correct 19 ms 628 KB Output is correct
29 Correct 33 ms 628 KB Output is correct
30 Correct 35 ms 628 KB Output is correct
31 Correct 4 ms 628 KB Output is correct
32 Correct 5 ms 628 KB Output is correct
33 Correct 2 ms 628 KB Output is correct
34 Correct 20 ms 628 KB Output is correct
35 Correct 5 ms 628 KB Output is correct
36 Correct 18 ms 628 KB Output is correct
37 Correct 7 ms 628 KB Output is correct
38 Correct 6 ms 628 KB Output is correct
39 Correct 26 ms 628 KB Output is correct
40 Correct 37 ms 628 KB Output is correct
41 Correct 28 ms 628 KB Output is correct
42 Correct 34 ms 628 KB Output is correct
43 Correct 27 ms 628 KB Output is correct
44 Correct 19 ms 628 KB Output is correct
45 Correct 17 ms 628 KB Output is correct
46 Correct 7 ms 628 KB Output is correct
47 Correct 23 ms 628 KB Output is correct
48 Correct 37 ms 628 KB Output is correct
49 Correct 9 ms 628 KB Output is correct
50 Correct 53 ms 628 KB Output is correct
51 Correct 18 ms 628 KB Output is correct
52 Correct 5 ms 628 KB Output is correct
53 Correct 9 ms 628 KB Output is correct
54 Correct 11 ms 628 KB Output is correct
55 Correct 3 ms 628 KB Output is correct
56 Correct 33 ms 628 KB Output is correct
57 Correct 36 ms 628 KB Output is correct
58 Correct 20 ms 628 KB Output is correct
59 Correct 31 ms 628 KB Output is correct
60 Correct 14 ms 628 KB Output is correct
61 Correct 7 ms 628 KB Output is correct
62 Correct 6 ms 628 KB Output is correct
63 Correct 6 ms 628 KB Output is correct
64 Correct 4 ms 628 KB Output is correct
65 Correct 8 ms 628 KB Output is correct
66 Correct 8 ms 628 KB Output is correct
67 Correct 6 ms 628 KB Output is correct
68 Correct 5 ms 628 KB Output is correct
69 Correct 9 ms 628 KB Output is correct
70 Correct 11 ms 628 KB Output is correct
71 Partially correct 51 ms 628 KB Partially correct - number of queries: 5239
72 Correct 11 ms 628 KB Output is correct
73 Partially correct 39 ms 628 KB Partially correct - number of queries: 5176
74 Partially correct 46 ms 628 KB Partially correct - number of queries: 5203
75 Correct 29 ms 628 KB Output is correct
76 Correct 46 ms 628 KB Output is correct
77 Correct 58 ms 628 KB Output is correct
78 Correct 13 ms 628 KB Output is correct
79 Correct 24 ms 628 KB Output is correct
80 Correct 22 ms 628 KB Output is correct
81 Correct 22 ms 628 KB Output is correct
82 Correct 43 ms 628 KB Output is correct
83 Correct 7 ms 628 KB Output is correct
84 Correct 42 ms 628 KB Output is correct
85 Correct 30 ms 628 KB Output is correct
86 Correct 25 ms 628 KB Output is correct
87 Correct 6 ms 628 KB Output is correct
88 Correct 15 ms 628 KB Output is correct
89 Correct 12 ms 628 KB Output is correct
90 Correct 4 ms 628 KB Output is correct
91 Correct 5 ms 628 KB Output is correct
92 Correct 12 ms 628 KB Output is correct
93 Correct 12 ms 628 KB Output is correct
94 Correct 12 ms 628 KB Output is correct
95 Correct 15 ms 628 KB Output is correct
96 Correct 13 ms 628 KB Output is correct
97 Correct 11 ms 628 KB Output is correct