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Submission #112250

# Submission time Handle Problem Language Result Execution time Memory
112250 2019-05-18T07:18:33 Z someone_aa The Big Prize (IOI17_prize) C++17
20 / 100
 91 ms 2180 KB 
#include "prize.h"
#include <bits/stdc++.h>
#define P pair<int,int>
using namespace std;
const int maxn = 200100;
const int b = 1000;
bool visited[maxn];
int q[maxn][2];
int max_sum, ind;
P query(int i) {
    if(visited[i]) return {q[i][0], q[i][1]};
    visited[i] = true;
    vector<int>curr = ask(i);
    q[i][0] = curr[0];
    q[i][1] = curr[1];
    return {q[i][0], q[i][1]};
}

int sum(int i) {
    query(i);
    return q[i][0] + q[i][1];
}

void solve(int l, int r) {
    //cout<<l<<" "<<r<<"\n";
    if(l > r || ind != -1) return;

    P ql = query(l);
    P qr = query(r);

    if(ql.first + ql.second == 0) {
        ind = l;
        return;
    }

    if(qr.first + qr.second == 0) {
        ind = r;
        return;
    }

    if(ql.first + ql.second != max_sum) {
        solve(l+1, r);
        return;
    }

    if(qr.first + qr.second != max_sum) {
        solve(l, r-1);
        return;
    }

    int between  = qr.first - ql.first;
    if(between == 0) return;

    int mid = (l + r) / 2;

    solve(l, mid);
    solve(mid+1, r);
}

int find_best(int n) {
    ind = -1;
    for(int i=0;i<min(n, 400);i++) {
        if(sum(i) == 0) return i;
        max_sum = max(max_sum, sum(i));
    } //max_sum = 1;

    for(int l=0;l<n;l+=b) {
        int r = min(n-1, l+b-1);
        solve(l, r);
    }
    return ind;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 520 KB Output is correct
2 Correct 4 ms 936 KB Output is correct
3 Correct 5 ms 900 KB Output is correct
4 Correct 6 ms 1272 KB Output is correct
5 Correct 5 ms 760 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 6 ms 760 KB Output is correct
8 Correct 7 ms 712 KB Output is correct
9 Correct 6 ms 760 KB Output is correct
10 Correct 10 ms 1280 KB Output is correct

Subtask #2
0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 432 KB Output is correct
2 Correct 7 ms 1016 KB Output is correct
3 Correct 4 ms 756 KB Output is correct
4 Correct 5 ms 1260 KB Output is correct
5 Correct 4 ms 832 KB Output is correct
6 Correct 2 ms 384 KB Output is correct
7 Correct 7 ms 824 KB Output is correct
8 Correct 7 ms 760 KB Output is correct
9 Correct 4 ms 816 KB Output is correct
10 Correct 8 ms 1272 KB Output is correct
11 Correct 5 ms 800 KB Output is correct
12 Correct 3 ms 412 KB Output is correct
13 Correct 10 ms 1528 KB Output is correct
14 Correct 6 ms 256 KB Output is correct
15 Correct 7 ms 660 KB Output is correct
16 Partially correct 58 ms 1700 KB Partially correct - number of queries: 6597
17 Correct 5 ms 256 KB Output is correct
18 Partially correct 91 ms 2100 KB Partially correct - number of queries: 7865
19 Correct 4 ms 256 KB Output is correct
20 Correct 27 ms 632 KB Output is correct
21 Correct 31 ms 888 KB Output is correct
22 Correct 5 ms 432 KB Output is correct
23 Correct 7 ms 376 KB Output is correct
24 Correct 4 ms 256 KB Output is correct
25 Correct 26 ms 1224 KB Output is correct
26 Correct 29 ms 1124 KB Output is correct
27 Correct 4 ms 604 KB Output is correct
28 Partially correct 29 ms 2024 KB Partially correct - number of queries: 6825
29 Partially correct 43 ms 1656 KB Partially correct - number of queries: 5330
30 Partially correct 35 ms 2044 KB Partially correct - number of queries: 7792
31 Correct 8 ms 384 KB Output is correct
32 Correct 13 ms 1016 KB Output is correct
33 Correct 2 ms 256 KB Output is correct
34 Correct 11 ms 864 KB Output is correct
35 Correct 11 ms 1016 KB Output is correct
36 Correct 25 ms 632 KB Output is correct
37 Correct 8 ms 504 KB Output is correct
38 Correct 8 ms 436 KB Output is correct
39 Correct 14 ms 1128 KB Output is correct
40 Partially correct 52 ms 2040 KB Partially correct - number of queries: 6955
41 Correct 44 ms 1272 KB Output is correct
42 Correct 18 ms 1292 KB Output is correct
43 Correct 33 ms 1144 KB Output is correct
44 Correct 24 ms 888 KB Output is correct
45 Correct 10 ms 900 KB Output is correct
46 Correct 3 ms 400 KB Output is correct
47 Correct 34 ms 1016 KB Output is correct
48 Partially correct 21 ms 1540 KB Partially correct - number of queries: 5724
49 Correct 11 ms 376 KB Output is correct
50 Partially correct 28 ms 2104 KB Partially correct - number of queries: 7846
51 Correct 32 ms 888 KB Output is correct
52 Correct 5 ms 384 KB Output is correct
53 Correct 10 ms 1152 KB Output is correct
54 Correct 18 ms 980 KB Output is correct
55 Correct 5 ms 384 KB Output is correct
56 Partially correct 39 ms 2068 KB Partially correct - number of queries: 7829
57 Partially correct 63 ms 1528 KB Partially correct - number of queries: 5667
58 Partially correct 66 ms 1528 KB Partially correct - number of queries: 5672
59 Correct 18 ms 1356 KB Output is correct
60 Correct 36 ms 1172 KB Output is correct
61 Correct 10 ms 1144 KB Output is correct
62 Correct 3 ms 400 KB Output is correct
63 Correct 8 ms 1144 KB Output is correct
64 Correct 9 ms 888 KB Output is correct
65 Correct 13 ms 1272 KB Output is correct
66 Correct 8 ms 1276 KB Output is correct
67 Correct 7 ms 1520 KB Output is correct
68 Correct 5 ms 396 KB Output is correct
69 Correct 9 ms 1272 KB Output is correct
70 Correct 6 ms 1520 KB Output is correct
71 Partially correct 76 ms 2040 KB Partially correct - number of queries: 8133
72 Correct 10 ms 1400 KB Output is correct
73 Partially correct 59 ms 2168 KB Partially correct - number of queries: 8042
74 Partially correct 79 ms 2040 KB Partially correct - number of queries: 8081
75 Correct 10 ms 1272 KB Output is correct
76 Partially correct 56 ms 2052 KB Partially correct - number of queries: 7197
77 Partially correct 76 ms 2040 KB Partially correct - number of queries: 7443
78 Correct 16 ms 1400 KB Output is correct
79 Correct 25 ms 2168 KB Output is correct
80 Partially correct 27 ms 2180 KB Partially correct - number of queries: 7357
81 Partially correct 74 ms 2000 KB Partially correct - number of queries: 7427
82 Partially correct 75 ms 2044 KB Partially correct - number of queries: 7419
83 Correct 13 ms 1272 KB Output is correct
84 Partially correct 23 ms 1988 KB Partially correct - number of queries: 6341
85 Partially correct 46 ms 2020 KB Partially correct - number of queries: 7434
86 Incorrect 44 ms 632 KB Incorrect
87 Halted 0 ms 0 KB -