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Submission #306830

# Submission time Handle Problem Language Result Execution time Memory
306830 2020-09-26T10:39:21 Z phathnv Handcrafted Gift (IOI20_gift) C++14
100 / 100
 212 ms 17200 KB 
#include <bits/stdc++.h>
#include "gift.h"

using namespace std;

int construct(int n, int r, vector <int> a, vector <int> b, vector <int> x){
    vector <int> maxR(n, 0), cnt(n, 0);
    for(int i = 0; i < r; i++){
        if (x[i] == 2)
            continue;
        maxR[a[i]] = max(maxR[a[i]], b[i]);
    }
    for(int i = 0; i < n; i++){
        maxR[i] = max(maxR[i], i);
        if (i > 0)
            maxR[i] = max(maxR[i], maxR[i - 1]);
        if (maxR[i] == i){
            cnt[i]++;
        }
        if (i > 0)
            cnt[i] += cnt[i - 1];
    }
    for(int i = 0; i < r; i++){
        if (x[i] == 1)
            continue;
        if (a[i] == b[i])
            return 0;
        int tmp = cnt[b[i] - 1];
        if (a[i] > 0)
            tmp -= cnt[a[i] - 1];
        if (tmp < 1)
            return 0;
    }

    string res;
    res.push_back('B');
    for(int i = 1; i < n; i++)
        res.push_back((cnt[i - 1] & 1)? 'R' : 'B');
    craft(res);
    return 1;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 5 ms 640 KB Output is correct
5 Correct 193 ms 17072 KB Output is correct
6 Correct 191 ms 17056 KB Output is correct
7 Correct 201 ms 17072 KB Output is correct
8 Correct 201 ms 17076 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 4 ms 640 KB Output is correct
4 Correct 204 ms 17200 KB Output is correct
5 Correct 196 ms 17072 KB Output is correct
6 Correct 191 ms 15992 KB Output is correct
7 Correct 191 ms 15992 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 0 ms 256 KB Output is correct
6 Correct 1 ms 256 KB Output is correct
7 Correct 0 ms 256 KB Output is correct
8 Correct 1 ms 256 KB Output is correct
9 Correct 0 ms 256 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 1 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 0 ms 256 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 1 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 384 KB Output is correct
9 Correct 1 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 256 KB Output is correct
2 Correct 0 ms 256 KB Output is correct
3 Correct 1 ms 256 KB Output is correct
4 Correct 5 ms 640 KB Output is correct
5 Correct 193 ms 17072 KB Output is correct
6 Correct 191 ms 17056 KB Output is correct
7 Correct 201 ms 17072 KB Output is correct
8 Correct 201 ms 17076 KB Output is correct
9 Correct 1 ms 256 KB Output is correct
10 Correct 0 ms 256 KB Output is correct
11 Correct 4 ms 640 KB Output is correct
12 Correct 204 ms 17200 KB Output is correct
13 Correct 196 ms 17072 KB Output is correct
14 Correct 191 ms 15992 KB Output is correct
15 Correct 191 ms 15992 KB Output is correct
16 Correct 1 ms 256 KB Output is correct
17 Correct 0 ms 256 KB Output is correct
18 Correct 1 ms 256 KB Output is correct
19 Correct 0 ms 256 KB Output is correct
20 Correct 0 ms 256 KB Output is correct
21 Correct 1 ms 256 KB Output is correct
22 Correct 0 ms 256 KB Output is correct
23 Correct 1 ms 256 KB Output is correct
24 Correct 0 ms 256 KB Output is correct
25 Correct 1 ms 256 KB Output is correct
26 Correct 1 ms 256 KB Output is correct
27 Correct 1 ms 256 KB Output is correct
28 Correct 0 ms 256 KB Output is correct
29 Correct 1 ms 384 KB Output is correct
30 Correct 1 ms 384 KB Output is correct
31 Correct 1 ms 384 KB Output is correct
32 Correct 1 ms 384 KB Output is correct
33 Correct 1 ms 384 KB Output is correct
34 Correct 1 ms 384 KB Output is correct
35 Correct 13 ms 5308 KB Output is correct
36 Correct 14 ms 5436 KB Output is correct
37 Correct 20 ms 5820 KB Output is correct
38 Correct 207 ms 17076 KB Output is correct
39 Correct 193 ms 15976 KB Output is correct
40 Correct 204 ms 17072 KB Output is correct
41 Correct 204 ms 17072 KB Output is correct
42 Correct 212 ms 17072 KB Output is correct