oj.uz

Submission #423152

# Submission time Handle Problem Language Result Execution time Memory
423152 2021-06-10T19:01:38 Z Rudy420 Toy Train (IOI17_train) C++17
100 / 100
 1174 ms 1664 KB 
#include <bits/stdc++.h>
using namespace std;
#define x first
#define y second
#define lg length()
#define pb push_back
#define INF 2000000005
#define LINF 1000000000000000005
#define all(x) (x).begin(), (x).end()
#define rep(i, a, b) for(int i = a; i < (b); ++i)
#define sz(x) (int)(x).size()
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
int rand(int l,int r){return uniform_int_distribution<int>(l,r)(rng);}
#include "train.h"

int n,m;

vector <vector<int>> g, h;

int count_ones(vector<int> &a){
	int ans = 0;
	for(int i=0;i<n;i++){
		ans += a[i];
	}
	return ans;
}

void f(vector<int> &s, vector<int> &w, vector<int> &a, int id){
	queue<int> q;
	vector<int> d(n);
	for(int i=0;i<n;i++){
		if(s[i]) q.push(i);
		for(int j : g[i]){
			if(w[j]) d[i]++;
		}
	}
	while(sz(q)){
		int i = q.front();
		q.pop();
		for(int j : h[i]){
			if(!w[j] || s[j]) continue;
			d[j]--;
			if(a[j] == id || d[j] == 0){
				s[j] = 1;
				q.push(j);
			}
		}
	}
}

vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) {
	n = sz(a);
	m = sz(u);
	vector<int> ans(n, 1);
	for(int i=0;i<n;i++) g.pb({}), h.pb({});
	for(int i=0;i<m;i++) g[u[i]].pb(v[i]), h[v[i]].pb(u[i]);

	vector<int> s(n);
	while(1){
		for(int i=0;i<n;i++){
			if(r[i] && ans[i]) s[i] = 1;
			else s[i] = 0;
		}
		f(s, ans, a, 1);
		if(count_ones(s) == count_ones(ans)) break;
		for(int i=0;i<n;i++){
			if(!s[i] && ans[i]) s[i] = 1;
			else s[i] = 0;
		}
		f(s, ans, a, 0);
		for(int i=0;i<n;i++){
			if(s[i]) ans[i] = 0;
		}
	}

	return ans;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1232 KB Output is correct
2 Correct 8 ms 1104 KB Output is correct
3 Correct 7 ms 1104 KB Output is correct
4 Correct 7 ms 1100 KB Output is correct
5 Correct 6 ms 1104 KB Output is correct
6 Correct 6 ms 1100 KB Output is correct
7 Correct 5 ms 1132 KB Output is correct
8 Correct 7 ms 1104 KB Output is correct
9 Correct 7 ms 1224 KB Output is correct
10 Correct 8 ms 1100 KB Output is correct
11 Correct 4 ms 1100 KB Output is correct

Subtask #2
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 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
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 0 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 ms 204 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 0 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 199 ms 1664 KB Output is correct
2 Correct 397 ms 1664 KB Output is correct
3 Correct 563 ms 1664 KB Output is correct
4 Correct 9 ms 1612 KB Output is correct
5 Correct 11 ms 1620 KB Output is correct
6 Correct 11 ms 1592 KB Output is correct
7 Correct 9 ms 1588 KB Output is correct
8 Correct 9 ms 1644 KB Output is correct
9 Correct 8 ms 1552 KB Output is correct
10 Correct 12 ms 1484 KB Output is correct
11 Correct 12 ms 1560 KB Output is correct
12 Correct 8 ms 1488 KB Output is correct
13 Correct 9 ms 1588 KB Output is correct
14 Correct 12 ms 1584 KB Output is correct
15 Correct 10 ms 1616 KB Output is correct
16 Correct 11 ms 1612 KB Output is correct
17 Correct 11 ms 1596 KB Output is correct
18 Correct 671 ms 1264 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1360 KB Output is correct
2 Correct 10 ms 1408 KB Output is correct
3 Correct 9 ms 1612 KB Output is correct
4 Correct 10 ms 1612 KB Output is correct
5 Correct 9 ms 1612 KB Output is correct
6 Correct 12 ms 1488 KB Output is correct
7 Correct 9 ms 1600 KB Output is correct
8 Correct 9 ms 1484 KB Output is correct
9 Correct 8 ms 1484 KB Output is correct
10 Correct 9 ms 1592 KB Output is correct
11 Correct 13 ms 1592 KB Output is correct
12 Correct 9 ms 1612 KB Output is correct
13 Correct 11 ms 1516 KB Output is correct
14 Correct 14 ms 1456 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 1612 KB Output is correct
2 Correct 9 ms 1564 KB Output is correct
3 Correct 10 ms 1612 KB Output is correct
4 Correct 9 ms 1488 KB Output is correct
5 Correct 1 ms 332 KB Output is correct
6 Correct 5 ms 1104 KB Output is correct
7 Correct 6 ms 972 KB Output is correct
8 Correct 6 ms 972 KB Output is correct
9 Correct 6 ms 972 KB Output is correct
10 Correct 2 ms 460 KB Output is correct
11 Correct 5 ms 972 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 1232 KB Output is correct
2 Correct 8 ms 1104 KB Output is correct
3 Correct 7 ms 1104 KB Output is correct
4 Correct 7 ms 1100 KB Output is correct
5 Correct 6 ms 1104 KB Output is correct
6 Correct 6 ms 1100 KB Output is correct
7 Correct 5 ms 1132 KB Output is correct
8 Correct 7 ms 1104 KB Output is correct
9 Correct 7 ms 1224 KB Output is correct
10 Correct 8 ms 1100 KB Output is correct
11 Correct 4 ms 1100 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 1 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 204 KB Output is correct
30 Correct 0 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 199 ms 1664 KB Output is correct
33 Correct 397 ms 1664 KB Output is correct
34 Correct 563 ms 1664 KB Output is correct
35 Correct 9 ms 1612 KB Output is correct
36 Correct 11 ms 1620 KB Output is correct
37 Correct 11 ms 1592 KB Output is correct
38 Correct 9 ms 1588 KB Output is correct
39 Correct 9 ms 1644 KB Output is correct
40 Correct 8 ms 1552 KB Output is correct
41 Correct 12 ms 1484 KB Output is correct
42 Correct 12 ms 1560 KB Output is correct
43 Correct 8 ms 1488 KB Output is correct
44 Correct 9 ms 1588 KB Output is correct
45 Correct 12 ms 1584 KB Output is correct
46 Correct 10 ms 1616 KB Output is correct
47 Correct 11 ms 1612 KB Output is correct
48 Correct 11 ms 1596 KB Output is correct
49 Correct 671 ms 1264 KB Output is correct
50 Correct 7 ms 1360 KB Output is correct
51 Correct 10 ms 1408 KB Output is correct
52 Correct 9 ms 1612 KB Output is correct
53 Correct 10 ms 1612 KB Output is correct
54 Correct 9 ms 1612 KB Output is correct
55 Correct 12 ms 1488 KB Output is correct
56 Correct 9 ms 1600 KB Output is correct
57 Correct 9 ms 1484 KB Output is correct
58 Correct 8 ms 1484 KB Output is correct
59 Correct 9 ms 1592 KB Output is correct
60 Correct 13 ms 1592 KB Output is correct
61 Correct 9 ms 1612 KB Output is correct
62 Correct 11 ms 1516 KB Output is correct
63 Correct 14 ms 1456 KB Output is correct
64 Correct 12 ms 1612 KB Output is correct
65 Correct 9 ms 1564 KB Output is correct
66 Correct 10 ms 1612 KB Output is correct
67 Correct 9 ms 1488 KB Output is correct
68 Correct 1 ms 332 KB Output is correct
69 Correct 5 ms 1104 KB Output is correct
70 Correct 6 ms 972 KB Output is correct
71 Correct 6 ms 972 KB Output is correct
72 Correct 6 ms 972 KB Output is correct
73 Correct 2 ms 460 KB Output is correct
74 Correct 5 ms 972 KB Output is correct
75 Correct 298 ms 1628 KB Output is correct
76 Correct 436 ms 1656 KB Output is correct
77 Correct 616 ms 1648 KB Output is correct
78 Correct 622 ms 1648 KB Output is correct
79 Correct 627 ms 1648 KB Output is correct
80 Correct 10 ms 1612 KB Output is correct
81 Correct 10 ms 1612 KB Output is correct
82 Correct 12 ms 1612 KB Output is correct
83 Correct 11 ms 1592 KB Output is correct
84 Correct 11 ms 1612 KB Output is correct
85 Correct 11 ms 1488 KB Output is correct
86 Correct 12 ms 1612 KB Output is correct
87 Correct 10 ms 1612 KB Output is correct
88 Correct 18 ms 1544 KB Output is correct
89 Correct 13 ms 1584 KB Output is correct
90 Correct 21 ms 1612 KB Output is correct
91 Correct 20 ms 1612 KB Output is correct
92 Correct 38 ms 1612 KB Output is correct
93 Correct 39 ms 1612 KB Output is correct
94 Correct 41 ms 1612 KB Output is correct
95 Correct 42 ms 1612 KB Output is correct
96 Correct 133 ms 1484 KB Output is correct
97 Correct 712 ms 1620 KB Output is correct
98 Correct 1085 ms 1604 KB Output is correct
99 Correct 1174 ms 1568 KB Output is correct
100 Correct 632 ms 1260 KB Output is correct