Submission #89255

# Submission time Handle Problem Language Result Execution time Memory
89255 2018-12-11T06:23:41 Z zoomswk The Big Prize (IOI17_prize) C++17
97.62 / 100
86 ms 5580 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(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 = 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 11 ms 4984 KB Output is correct
2 Correct 12 ms 4984 KB Output is correct
3 Correct 10 ms 5080 KB Output is correct
4 Correct 10 ms 5284 KB Output is correct
5 Correct 10 ms 5284 KB Output is correct
6 Correct 6 ms 5284 KB Output is correct
7 Correct 12 ms 5284 KB Output is correct
8 Correct 8 ms 5308 KB Output is correct
9 Correct 8 ms 5324 KB Output is correct
10 Correct 11 ms 5324 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 10 ms 5324 KB Output is correct
2 Correct 11 ms 5324 KB Output is correct
3 Correct 13 ms 5324 KB Output is correct
4 Correct 11 ms 5324 KB Output is correct
5 Correct 11 ms 5324 KB Output is correct
6 Correct 6 ms 5324 KB Output is correct
7 Correct 8 ms 5324 KB Output is correct
8 Correct 8 ms 5324 KB Output is correct
9 Correct 11 ms 5324 KB Output is correct
10 Correct 12 ms 5324 KB Output is correct
11 Correct 10 ms 5332 KB Output is correct
12 Correct 12 ms 5332 KB Output is correct
13 Correct 10 ms 5332 KB Output is correct
14 Correct 14 ms 5332 KB Output is correct
15 Correct 20 ms 5332 KB Output is correct
16 Correct 40 ms 5368 KB Output is correct
17 Correct 8 ms 5368 KB Output is correct
18 Correct 55 ms 5368 KB Output is correct
19 Correct 10 ms 5368 KB Output is correct
20 Correct 21 ms 5368 KB Output is correct
21 Correct 24 ms 5368 KB Output is correct
22 Correct 14 ms 5368 KB Output is correct
23 Correct 10 ms 5368 KB Output is correct
24 Correct 8 ms 5368 KB Output is correct
25 Correct 30 ms 5368 KB Output is correct
26 Correct 17 ms 5408 KB Output is correct
27 Correct 10 ms 5408 KB Output is correct
28 Correct 41 ms 5408 KB Output is correct
29 Correct 35 ms 5408 KB Output is correct
30 Correct 28 ms 5420 KB Output is correct
31 Correct 10 ms 5420 KB Output is correct
32 Correct 12 ms 5420 KB Output is correct
33 Correct 5 ms 5420 KB Output is correct
34 Correct 26 ms 5420 KB Output is correct
35 Correct 13 ms 5420 KB Output is correct
36 Correct 19 ms 5420 KB Output is correct
37 Correct 10 ms 5420 KB Output is correct
38 Correct 11 ms 5420 KB Output is correct
39 Correct 29 ms 5420 KB Output is correct
40 Correct 28 ms 5432 KB Output is correct
41 Correct 33 ms 5432 KB Output is correct
42 Correct 34 ms 5432 KB Output is correct
43 Correct 38 ms 5432 KB Output is correct
44 Correct 25 ms 5432 KB Output is correct
45 Correct 24 ms 5432 KB Output is correct
46 Correct 11 ms 5432 KB Output is correct
47 Correct 28 ms 5432 KB Output is correct
48 Correct 45 ms 5432 KB Output is correct
49 Correct 16 ms 5432 KB Output is correct
50 Correct 56 ms 5528 KB Output is correct
51 Correct 16 ms 5528 KB Output is correct
52 Correct 12 ms 5528 KB Output is correct
53 Correct 14 ms 5528 KB Output is correct
54 Correct 35 ms 5528 KB Output is correct
55 Correct 11 ms 5528 KB Output is correct
56 Correct 33 ms 5528 KB Output is correct
57 Correct 43 ms 5528 KB Output is correct
58 Correct 40 ms 5528 KB Output is correct
59 Correct 20 ms 5528 KB Output is correct
60 Correct 28 ms 5528 KB Output is correct
61 Correct 12 ms 5528 KB Output is correct
62 Correct 8 ms 5528 KB Output is correct
63 Correct 9 ms 5528 KB Output is correct
64 Correct 10 ms 5528 KB Output is correct
65 Correct 8 ms 5528 KB Output is correct
66 Correct 13 ms 5528 KB Output is correct
67 Correct 16 ms 5528 KB Output is correct
68 Correct 10 ms 5528 KB Output is correct
69 Correct 15 ms 5528 KB Output is correct
70 Correct 9 ms 5528 KB Output is correct
71 Partially correct 57 ms 5528 KB Partially correct - number of queries: 5238
72 Correct 15 ms 5528 KB Output is correct
73 Partially correct 86 ms 5528 KB Partially correct - number of queries: 5175
74 Partially correct 55 ms 5528 KB Partially correct - number of queries: 5202
75 Correct 12 ms 5528 KB Output is correct
76 Correct 61 ms 5528 KB Output is correct
77 Correct 53 ms 5528 KB Output is correct
78 Correct 17 ms 5528 KB Output is correct
79 Correct 26 ms 5528 KB Output is correct
80 Correct 55 ms 5528 KB Output is correct
81 Correct 51 ms 5528 KB Output is correct
82 Correct 47 ms 5580 KB Output is correct
83 Correct 15 ms 5580 KB Output is correct
84 Correct 34 ms 5580 KB Output is correct
85 Correct 48 ms 5580 KB Output is correct
86 Correct 12 ms 5580 KB Output is correct
87 Correct 5 ms 5580 KB Output is correct
88 Correct 12 ms 5580 KB Output is correct
89 Correct 11 ms 5580 KB Output is correct
90 Correct 11 ms 5580 KB Output is correct
91 Correct 10 ms 5580 KB Output is correct
92 Correct 11 ms 5580 KB Output is correct
93 Correct 14 ms 5580 KB Output is correct
94 Correct 13 ms 5580 KB Output is correct
95 Correct 15 ms 5580 KB Output is correct
96 Correct 15 ms 5580 KB Output is correct
97 Correct 13 ms 5580 KB Output is correct