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Submission #491736

# Submission time Handle Problem Language Result Execution time Memory
491736 2021-12-04T07:13:58 Z qwerasdfzxcl The Big Prize (IOI17_prize) C++14
100 / 100
 63 ms 1112 KB 
#include "prize.h"
#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
const int MX = 475;
int X, ret = -1, val[200200];

void dnc(int l, int r, int valL, int valR){
    //printf("%d %d %d %d\n", l, r, valL, valR);
    int m = (l+r)>>1;
    vector<int> v;
    while(l<m){
        if (val[m]==-1 || val[m]==X){
            v = ask(m);
            val[m] = v[0]+v[1];
        }

        if (val[m]!=X){
            if (!val[m]) ret = m;
            --m;
            continue;
        }

        break;
    }

    if (l==m){
        m = (l+r)>>1;
        while(m<r){
            if (val[m]==-1 || val[m]==X){
                v = ask(m);
                val[m] = v[0]+v[1];
            }

            if (val[m]!=X){
                if (!val[m]) ret = m;
                ++m;
                continue;
            }

            break;
        }
    }

    if (r==m) return;
    if (v[0]!=valL) dnc(l, m, valL, v[1]);
    if (v[1]!=valR) dnc(m, r, v[0], valR);
}

int find_best(int n) {
    fill(val, val+n, -1);
    int i;
    for (i=0;i<min(n, MX+1);i++){
        auto v = ask(i);
        X = max(X, v[0]+v[1]);
        val[i] = v[0]+v[1];
        if (val[i]==0) ret = i;
        if (val[i]>=30) break;
    }

    dnc(i-1, n, i, 0);
    assert(ret!=-1);
    return ret;
}

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 1064 KB Output is correct
2 Correct 7 ms 1068 KB Output is correct
3 Correct 5 ms 960 KB Output is correct
4 Correct 4 ms 1040 KB Output is correct
5 Correct 3 ms 968 KB Output is correct
6 Correct 6 ms 1064 KB Output is correct
7 Correct 7 ms 1052 KB Output is correct
8 Correct 7 ms 968 KB Output is correct
9 Correct 4 ms 968 KB Output is correct
10 Correct 6 ms 1076 KB Output is correct

Subtask #2
80.0 / 80.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1056 KB Output is correct
2 Correct 7 ms 1068 KB Output is correct
3 Correct 9 ms 968 KB Output is correct
4 Correct 6 ms 1060 KB Output is correct
5 Correct 5 ms 1068 KB Output is correct
6 Correct 6 ms 968 KB Output is correct
7 Correct 3 ms 968 KB Output is correct
8 Correct 5 ms 1056 KB Output is correct
9 Correct 6 ms 1068 KB Output is correct
10 Correct 5 ms 1080 KB Output is correct
11 Correct 3 ms 1060 KB Output is correct
12 Correct 6 ms 1040 KB Output is correct
13 Correct 5 ms 1052 KB Output is correct
14 Correct 11 ms 328 KB Output is correct
15 Correct 47 ms 1060 KB Output is correct
16 Correct 37 ms 1052 KB Output is correct
17 Correct 45 ms 1060 KB Output is correct
18 Correct 37 ms 1060 KB Output is correct
19 Correct 40 ms 1056 KB Output is correct
20 Correct 19 ms 676 KB Output is correct
21 Correct 38 ms 1052 KB Output is correct
22 Correct 23 ms 1056 KB Output is correct
23 Correct 9 ms 1064 KB Output is correct
24 Correct 4 ms 968 KB Output is correct
25 Correct 42 ms 1052 KB Output is correct
26 Correct 17 ms 1060 KB Output is correct
27 Correct 5 ms 1076 KB Output is correct
28 Correct 18 ms 1056 KB Output is correct
29 Correct 39 ms 968 KB Output is correct
30 Correct 17 ms 1052 KB Output is correct
31 Correct 50 ms 960 KB Output is correct
32 Correct 8 ms 968 KB Output is correct
33 Correct 1 ms 200 KB Output is correct
34 Correct 48 ms 1060 KB Output is correct
35 Correct 7 ms 1060 KB Output is correct
36 Correct 37 ms 1064 KB Output is correct
37 Correct 3 ms 1052 KB Output is correct
38 Correct 7 ms 1064 KB Output is correct
39 Correct 18 ms 1052 KB Output is correct
40 Correct 25 ms 1060 KB Output is correct
41 Correct 46 ms 1060 KB Output is correct
42 Correct 45 ms 968 KB Output is correct
43 Correct 20 ms 1068 KB Output is correct
44 Correct 48 ms 1060 KB Output is correct
45 Correct 40 ms 1040 KB Output is correct
46 Correct 46 ms 1064 KB Output is correct
47 Correct 26 ms 1088 KB Output is correct
48 Correct 38 ms 1056 KB Output is correct
49 Correct 19 ms 1044 KB Output is correct
50 Correct 37 ms 960 KB Output is correct
51 Correct 38 ms 1044 KB Output is correct
52 Correct 42 ms 1052 KB Output is correct
53 Correct 5 ms 1056 KB Output is correct
54 Correct 46 ms 1060 KB Output is correct
55 Correct 19 ms 1052 KB Output is correct
56 Correct 43 ms 1060 KB Output is correct
57 Correct 44 ms 1056 KB Output is correct
58 Correct 48 ms 1064 KB Output is correct
59 Correct 30 ms 1048 KB Output is correct
60 Correct 18 ms 1064 KB Output is correct
61 Correct 6 ms 1052 KB Output is correct
62 Correct 5 ms 1068 KB Output is correct
63 Correct 8 ms 968 KB Output is correct
64 Correct 5 ms 1052 KB Output is correct
65 Correct 1 ms 1056 KB Output is correct
66 Correct 5 ms 968 KB Output is correct
67 Correct 3 ms 1096 KB Output is correct
68 Correct 2 ms 1064 KB Output is correct
69 Correct 5 ms 1056 KB Output is correct
70 Correct 4 ms 1044 KB Output is correct
71 Correct 49 ms 1096 KB Output is correct
72 Correct 3 ms 968 KB Output is correct
73 Correct 39 ms 968 KB Output is correct
74 Correct 51 ms 968 KB Output is correct
75 Correct 11 ms 968 KB Output is correct
76 Correct 39 ms 968 KB Output is correct
77 Correct 53 ms 968 KB Output is correct
78 Correct 7 ms 968 KB Output is correct
79 Correct 15 ms 968 KB Output is correct
80 Correct 37 ms 968 KB Output is correct
81 Correct 50 ms 968 KB Output is correct
82 Correct 47 ms 1064 KB Output is correct
83 Correct 6 ms 1060 KB Output is correct
84 Correct 24 ms 968 KB Output is correct
85 Correct 63 ms 968 KB Output is correct
86 Correct 7 ms 968 KB Output is correct
87 Correct 1 ms 968 KB Output is correct
88 Correct 7 ms 968 KB Output is correct
89 Correct 3 ms 1112 KB Output is correct
90 Correct 7 ms 1076 KB Output is correct
91 Correct 3 ms 968 KB Output is correct
92 Correct 5 ms 1000 KB Output is correct
93 Correct 9 ms 968 KB Output is correct
94 Correct 12 ms 968 KB Output is correct
95 Correct 9 ms 968 KB Output is correct
96 Correct 11 ms 968 KB Output is correct
97 Correct 4 ms 968 KB Output is correct