Submission #89256

# Submission time Handle Problem Language Result Execution time Memory
89256 2018-12-11T06:24:15 Z zoomswk The Big Prize (IOI17_prize) C++17
97.62 / 100
76 ms 5568 KB
#include "prize.h"
#include <vector>
#include <algorithm>
#include <set>
using namespace std;

int m, res;
bool flag = false;
vector<int> mem[200005];

vector<int> qr(int x){
    if(mem[x].size() == 0) mem[x] = ask(x);
    return mem[x];
}

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 = qr(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 = qr(b);
        if(resp[0]+resp[1] == 0){
            res = b;
            flag = true;
            return;
        }
    }
    if(resp[0]+resp[1] == m){
        solve(b+1, r, num-(resp[0]-bef), resp[0]);
        if(flag) return;
        solve(l, mid-1, resp[0]-(b-mid)-bef, bef);
        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 = qr(i);
            if(resp[0]+resp[1] == 0) return i;
        }
    }
    vector<int> resp;
    set<int> s;
    for(int x=0; x<480; x++){
        int i = x;
        resp = qr(i);
        if(resp[0]+resp[1] == 0) return i;
        s.insert(resp[0]+resp[1]);
        m = max(m, resp[0]+resp[1]);
        if(s.size() == 4) break;
    }
    
    solve(0, n-1, m, 0);
    
    return res;
}
# Verdict Execution time Memory Grader output
1 Correct 10 ms 5116 KB Output is correct
2 Correct 8 ms 5196 KB Output is correct
3 Correct 8 ms 5196 KB Output is correct
4 Correct 8 ms 5324 KB Output is correct
5 Correct 13 ms 5324 KB Output is correct
6 Correct 6 ms 5324 KB Output is correct
7 Correct 10 ms 5324 KB Output is correct
8 Correct 10 ms 5324 KB Output is correct
9 Correct 11 ms 5324 KB Output is correct
10 Correct 10 ms 5324 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 10 ms 5324 KB Output is correct
2 Correct 13 ms 5324 KB Output is correct
3 Correct 10 ms 5324 KB Output is correct
4 Correct 11 ms 5324 KB Output is correct
5 Correct 8 ms 5324 KB Output is correct
6 Correct 6 ms 5324 KB Output is correct
7 Correct 11 ms 5324 KB Output is correct
8 Correct 8 ms 5324 KB Output is correct
9 Correct 8 ms 5324 KB Output is correct
10 Correct 11 ms 5324 KB Output is correct
11 Correct 14 ms 5324 KB Output is correct
12 Correct 16 ms 5324 KB Output is correct
13 Correct 7 ms 5324 KB Output is correct
14 Correct 19 ms 5324 KB Output is correct
15 Correct 38 ms 5408 KB Output is correct
16 Correct 11 ms 5408 KB Output is correct
17 Correct 12 ms 5408 KB Output is correct
18 Correct 12 ms 5408 KB Output is correct
19 Correct 9 ms 5408 KB Output is correct
20 Correct 22 ms 5460 KB Output is correct
21 Correct 23 ms 5460 KB Output is correct
22 Correct 21 ms 5460 KB Output is correct
23 Correct 10 ms 5460 KB Output is correct
24 Correct 17 ms 5460 KB Output is correct
25 Correct 27 ms 5460 KB Output is correct
26 Correct 15 ms 5460 KB Output is correct
27 Correct 13 ms 5460 KB Output is correct
28 Correct 9 ms 5460 KB Output is correct
29 Correct 10 ms 5460 KB Output is correct
30 Correct 11 ms 5460 KB Output is correct
31 Correct 8 ms 5460 KB Output is correct
32 Correct 11 ms 5460 KB Output is correct
33 Correct 5 ms 5460 KB Output is correct
34 Correct 21 ms 5460 KB Output is correct
35 Correct 11 ms 5460 KB Output is correct
36 Correct 30 ms 5460 KB Output is correct
37 Correct 14 ms 5460 KB Output is correct
38 Correct 8 ms 5460 KB Output is correct
39 Correct 18 ms 5460 KB Output is correct
40 Correct 10 ms 5460 KB Output is correct
41 Correct 15 ms 5460 KB Output is correct
42 Correct 16 ms 5460 KB Output is correct
43 Correct 16 ms 5460 KB Output is correct
44 Correct 40 ms 5460 KB Output is correct
45 Correct 20 ms 5460 KB Output is correct
46 Correct 8 ms 5460 KB Output is correct
47 Correct 41 ms 5460 KB Output is correct
48 Correct 27 ms 5460 KB Output is correct
49 Correct 55 ms 5460 KB Output is correct
50 Correct 8 ms 5460 KB Output is correct
51 Correct 40 ms 5460 KB Output is correct
52 Correct 30 ms 5568 KB Output is correct
53 Correct 13 ms 5568 KB Output is correct
54 Correct 35 ms 5568 KB Output is correct
55 Correct 8 ms 5568 KB Output is correct
56 Correct 12 ms 5568 KB Output is correct
57 Correct 26 ms 5568 KB Output is correct
58 Correct 23 ms 5568 KB Output is correct
59 Correct 29 ms 5568 KB Output is correct
60 Correct 27 ms 5568 KB Output is correct
61 Correct 19 ms 5568 KB Output is correct
62 Correct 6 ms 5568 KB Output is correct
63 Correct 11 ms 5568 KB Output is correct
64 Correct 10 ms 5568 KB Output is correct
65 Correct 9 ms 5568 KB Output is correct
66 Correct 9 ms 5568 KB Output is correct
67 Correct 14 ms 5568 KB Output is correct
68 Correct 11 ms 5568 KB Output is correct
69 Correct 9 ms 5568 KB Output is correct
70 Correct 12 ms 5568 KB Output is correct
71 Partially correct 76 ms 5568 KB Partially correct - number of queries: 5238
72 Correct 16 ms 5568 KB Output is correct
73 Partially correct 49 ms 5568 KB Partially correct - number of queries: 5175
74 Partially correct 65 ms 5568 KB Partially correct - number of queries: 5202
75 Correct 13 ms 5568 KB Output is correct
76 Correct 50 ms 5568 KB Output is correct
77 Correct 48 ms 5568 KB Output is correct
78 Correct 14 ms 5568 KB Output is correct
79 Correct 31 ms 5568 KB Output is correct
80 Correct 43 ms 5568 KB Output is correct
81 Correct 61 ms 5568 KB Output is correct
82 Correct 48 ms 5568 KB Output is correct
83 Correct 10 ms 5568 KB Output is correct
84 Correct 47 ms 5568 KB Output is correct
85 Correct 50 ms 5568 KB Output is correct
86 Correct 12 ms 5568 KB Output is correct
87 Correct 6 ms 5568 KB Output is correct
88 Correct 11 ms 5568 KB Output is correct
89 Correct 12 ms 5568 KB Output is correct
90 Correct 14 ms 5568 KB Output is correct
91 Correct 9 ms 5568 KB Output is correct
92 Correct 11 ms 5568 KB Output is correct
93 Correct 15 ms 5568 KB Output is correct
94 Correct 15 ms 5568 KB Output is correct
95 Correct 15 ms 5568 KB Output is correct
96 Correct 12 ms 5568 KB Output is correct
97 Correct 7 ms 5568 KB Output is correct