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Submission #559416

# Submission time Handle Problem Language Result Execution time Memory
559416 2022-05-09T17:56:02 Z PiejanVDC Handcrafted Gift (IOI20_gift) C++17
100 / 100
 154 ms 20140 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>one(n+1, 0), start(n, 0);
    for(int i = 0 ; i < r ; i++) {
        if(x[i] == 1)
            one[a[i]]++, one[b[i]+1]--, start[a[i]]++;
    }
    int cnt = 0;
    char C = 'R';
    auto c = [&] (char X) -> char {
        if(X == 'R')
            return 'B';
        return 'R';
    };
    string s = "";
    vector<int>change(n+1,0);
    for(int i = 0 ; i < n ; i++) {
        cnt += one[i];
        change[i+1] = change[i];
        if(!cnt || start[i] == cnt) {
            change[i+1]++;
            C = c(C);
        }
        s += C;
    }
    bool ok = 1;
    for(int i = 0 ; i < r ; i++) {
        if(x[i] == 1) {
            if(change[b[i]+1] - change[a[i]+1] != 0)
                ok = 0;
        } else {
            if(change[b[i]+1] - change[a[i]+1] == 0)
                ok = 0;
        }
    }
    if(!ok)
        return 0;
    craft(s);
    return 1;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 3 ms 784 KB Output is correct
5 Correct 138 ms 20052 KB Output is correct
6 Correct 134 ms 20020 KB Output is correct
7 Correct 134 ms 20048 KB Output is correct
8 Correct 132 ms 19976 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 300 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 3 ms 692 KB Output is correct
4 Correct 137 ms 20104 KB Output is correct
5 Correct 134 ms 20052 KB Output is correct
6 Correct 132 ms 20140 KB Output is correct
7 Correct 137 ms 20076 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 288 KB Output is correct
7 Correct 1 ms 304 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 296 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 392 KB Output is correct
8 Correct 2 ms 312 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 344 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 3 ms 784 KB Output is correct
5 Correct 138 ms 20052 KB Output is correct
6 Correct 134 ms 20020 KB Output is correct
7 Correct 134 ms 20048 KB Output is correct
8 Correct 132 ms 19976 KB Output is correct
9 Correct 1 ms 300 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 3 ms 692 KB Output is correct
12 Correct 137 ms 20104 KB Output is correct
13 Correct 134 ms 20052 KB Output is correct
14 Correct 132 ms 20140 KB Output is correct
15 Correct 137 ms 20076 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 288 KB Output is correct
22 Correct 1 ms 304 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 296 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 340 KB Output is correct
31 Correct 1 ms 392 KB Output is correct
32 Correct 2 ms 312 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 344 KB Output is correct
35 Correct 9 ms 7284 KB Output is correct
36 Correct 9 ms 7280 KB Output is correct
37 Correct 13 ms 8044 KB Output is correct
38 Correct 154 ms 20056 KB Output is correct
39 Correct 140 ms 20036 KB Output is correct
40 Correct 144 ms 20116 KB Output is correct
41 Correct 148 ms 19976 KB Output is correct
42 Correct 143 ms 20100 KB Output is correct