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Submission #651395

# Submission time Handle Problem Language Result Execution time Memory
651395 2022-10-18T16:33:03 Z Alan Handcrafted Gift (IOI20_gift) C++17
100 / 100
 220 ms 24596 KB 
#include <bits/stdc++.h>
#include "gift.h"
using namespace std;

int construct(int n, int m, vector<int> a, vector<int> b, vector<int> x) {
    string s (n, 0);
	vector<int> d (n+1), ps (n+1);
	for (int i = 0; i < m; i++) if (x[i] == 1) {
		d[a[i]]++;
		d[b[i]+1]--;
	}
	bool r = true;
	for (int i = 0; i < n; i++) {
		if (i) d[i] += d[i-1];
		if (!d[i] || (i && !d[i-1])) r = !r;
		s[i] = r ? 'R' : 'B';
		ps[i] += s[i] == 'B';
		if (i) ps[i] += ps[i-1];
	}
	for (int i = 0; i < m; i++) if (x[i] == 2) {
		int diff = ps[b[i]] - (a[i] ? ps[a[i]-1] : 0);
		if (diff == 0 || diff == b[i]-a[i]+1) 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 300 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 4 ms 652 KB Output is correct
5 Correct 156 ms 17308 KB Output is correct
6 Correct 151 ms 17312 KB Output is correct
7 Correct 163 ms 17296 KB Output is correct
8 Correct 158 ms 17312 KB Output is correct

Subtask #2
15.0 / 15.0

# 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 4 ms 724 KB Output is correct
4 Correct 179 ms 17672 KB Output is correct
5 Correct 160 ms 17716 KB Output is correct
6 Correct 167 ms 17424 KB Output is correct
7 Correct 153 ms 17428 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 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 300 KB Output is correct
9 Correct 1 ms 212 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 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 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 300 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 4 ms 652 KB Output is correct
5 Correct 156 ms 17308 KB Output is correct
6 Correct 151 ms 17312 KB Output is correct
7 Correct 163 ms 17296 KB Output is correct
8 Correct 158 ms 17312 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 4 ms 724 KB Output is correct
12 Correct 179 ms 17672 KB Output is correct
13 Correct 160 ms 17716 KB Output is correct
14 Correct 167 ms 17424 KB Output is correct
15 Correct 153 ms 17428 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 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 300 KB Output is correct
24 Correct 1 ms 212 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 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 7 ms 5172 KB Output is correct
36 Correct 10 ms 5204 KB Output is correct
37 Correct 13 ms 5976 KB Output is correct
38 Correct 174 ms 24596 KB Output is correct
39 Correct 151 ms 24088 KB Output is correct
40 Correct 180 ms 24456 KB Output is correct
41 Correct 220 ms 24472 KB Output is correct
42 Correct 166 ms 24072 KB Output is correct