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Submission #434179

# Submission time Handle Problem Language Result Execution time Memory
434179 2021-06-20T17:03:06 Z vanic Handcrafted Gift (IOI20_gift) C++14
100 / 100
 203 ms 18908 KB 
#include "gift.h"
#include <iostream>
#include <cmath>
#include <algorithm>
#include <vector>

using namespace std;

const int maxn=5e5+5;
const string s="RB";


int pref[maxn];
int poz[maxn];
int neg[maxn];
string sol;

int construct(int n, int r, vector<int> a, vector<int> b, vector<int> x) {
	for(int i=0; i<r; i++){
		if(x[i]==1){
			poz[a[i]]++;
			neg[b[i]+1]++;
		}
	}
	int sw=0;
	bool p=0;
	for(int i=0; i<n; i++){
		sw-=neg[i];
		if(!sw){
			p^=1;
		}
		sw+=poz[i];
		pref[i+1]=pref[i]+p;
		sol.push_back(s[p]);
	}
	for(int i=0; i<r; i++){
		if(x[i]==2 && (pref[b[i]+1]-pref[a[i]]==0 || pref[b[i]+1]-pref[a[i]]==b[i]-a[i]+1)){
			return 0;
		}
	}
	craft(sol);
	return 1;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 3 ms 588 KB Output is correct
5 Correct 172 ms 15188 KB Output is correct
6 Correct 203 ms 15232 KB Output is correct
7 Correct 165 ms 17612 KB Output is correct
8 Correct 162 ms 17620 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 3 ms 588 KB Output is correct
4 Correct 164 ms 15052 KB Output is correct
5 Correct 158 ms 15012 KB Output is correct
6 Correct 160 ms 14948 KB Output is correct
7 Correct 158 ms 15032 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct

Subtask #4
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 0 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 2 ms 388 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 320 KB Output is correct

Subtask #5
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 3 ms 588 KB Output is correct
5 Correct 172 ms 15188 KB Output is correct
6 Correct 203 ms 15232 KB Output is correct
7 Correct 165 ms 17612 KB Output is correct
8 Correct 162 ms 17620 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 3 ms 588 KB Output is correct
12 Correct 164 ms 15052 KB Output is correct
13 Correct 158 ms 15012 KB Output is correct
14 Correct 160 ms 14948 KB Output is correct
15 Correct 158 ms 15032 KB Output is correct
16 Correct 0 ms 204 KB Output is correct
17 Correct 0 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 204 KB Output is correct
26 Correct 0 ms 204 KB Output is correct
27 Correct 1 ms 204 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 332 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 2 ms 388 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 320 KB Output is correct
35 Correct 7 ms 4024 KB Output is correct
36 Correct 7 ms 3920 KB Output is correct
37 Correct 14 ms 4844 KB Output is correct
38 Correct 175 ms 15968 KB Output is correct
39 Correct 167 ms 17000 KB Output is correct
40 Correct 169 ms 18816 KB Output is correct
41 Correct 169 ms 18908 KB Output is correct
42 Correct 171 ms 15320 KB Output is correct