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Submission #839079

# Submission time Handle Problem Language Result Execution time Memory
839079 2023-08-28T15:17:49 Z mohammad_kilani Toy Train (IOI17_train) C++17
100 / 100
 337 ms 1704 KB 
#include "train.h"
#include <bits/stdc++.h>
using namespace std;

const int N = 5010;

int n;

vector< int > ans , g[N] , g2[N] , r , a;

void make(){
	ans = vector< int > (n , -1);
	vector< int > out(n , 0);
	queue < int > q;
	for(int i = 0 ;i < n;i++){
		out[i] = (int)g[i].size();
		if(r[i]){
			out[i] = 0;
			ans[i] = 1;
			q.push(i);
		}
	}
	int node;
	while(!q.empty()){
		node = q.front();
		q.pop();
		for(int pre , i = 0 ;i < (int)g2[node].size();i++){
			pre = g2[node][i];
			if(out[pre] == 0) continue;
			out[pre]--;
			if(a[pre]){
				out[pre] = 0;
				ans[pre] = 1;
				q.push(pre);
				continue;
			}
			if(out[pre] == 0){
				ans[pre] = 1;
				q.push(pre);
			}
		}
	}
	for(int i = 0 ;i < n;i++){
		if(ans[i] == -1)
			ans[i] = 0;
	}
}

std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v) {
	n = (int)a.size();
	ans.resize(n , -1);
	::r = r;
	::a = a;
	for(int i = 0 ;i < (int)u.size();i++){
		g[u[i]].push_back(v[i]);
		g2[v[i]].push_back(u[i]);
	}
	bool found = true , good;
	while(found){
		make();
		found = false;
		for(int i = 0 ;i < n;i++){
			if(!::r[i]) continue;
			good = false;
			for(int j = 0 ;j < (int)g[i].size();j++){
				if(ans[g[i][j]] == a[i]){
					good = true;
					break;
				}
			}
			if(good){
				if(!a[i]) found = true, ::r[i] = false;
			}
			else{
				if(a[i]) found = true, ::r[i] = false;
			}
		}
	}
	return ans;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1108 KB Output is correct
2 Correct 5 ms 1108 KB Output is correct
3 Correct 5 ms 1108 KB Output is correct
4 Correct 6 ms 1192 KB Output is correct
5 Correct 5 ms 1108 KB Output is correct
6 Correct 6 ms 1084 KB Output is correct
7 Correct 4 ms 1108 KB Output is correct
8 Correct 5 ms 1108 KB Output is correct
9 Correct 4 ms 1108 KB Output is correct
10 Correct 4 ms 1060 KB Output is correct
11 Correct 3 ms 1108 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 468 KB Output is correct
5 Correct 1 ms 468 KB Output is correct
6 Correct 1 ms 468 KB Output is correct
7 Correct 1 ms 468 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 1 ms 468 KB Output is correct
10 Correct 1 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 540 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 536 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 0 ms 468 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 54 ms 1464 KB Output is correct
2 Correct 94 ms 1364 KB Output is correct
3 Correct 124 ms 1448 KB Output is correct
4 Correct 6 ms 1364 KB Output is correct
5 Correct 9 ms 1440 KB Output is correct
6 Correct 7 ms 1328 KB Output is correct
7 Correct 6 ms 1428 KB Output is correct
8 Correct 6 ms 1364 KB Output is correct
9 Correct 5 ms 1364 KB Output is correct
10 Correct 5 ms 1364 KB Output is correct
11 Correct 5 ms 1364 KB Output is correct
12 Correct 5 ms 1236 KB Output is correct
13 Correct 6 ms 1352 KB Output is correct
14 Correct 6 ms 1364 KB Output is correct
15 Correct 6 ms 1364 KB Output is correct
16 Correct 6 ms 1364 KB Output is correct
17 Correct 6 ms 1364 KB Output is correct
18 Correct 190 ms 1152 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1364 KB Output is correct
2 Correct 5 ms 1236 KB Output is correct
3 Correct 6 ms 1364 KB Output is correct
4 Correct 6 ms 1364 KB Output is correct
5 Correct 6 ms 1364 KB Output is correct
6 Correct 6 ms 1404 KB Output is correct
7 Correct 6 ms 1364 KB Output is correct
8 Correct 5 ms 1360 KB Output is correct
9 Correct 7 ms 1364 KB Output is correct
10 Correct 6 ms 1364 KB Output is correct
11 Correct 6 ms 1364 KB Output is correct
12 Correct 6 ms 1364 KB Output is correct
13 Correct 6 ms 1364 KB Output is correct
14 Correct 6 ms 1236 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 1364 KB Output is correct
2 Correct 6 ms 1580 KB Output is correct
3 Correct 7 ms 1700 KB Output is correct
4 Correct 5 ms 1492 KB Output is correct
5 Correct 1 ms 544 KB Output is correct
6 Correct 3 ms 1152 KB Output is correct
7 Correct 5 ms 1180 KB Output is correct
8 Correct 4 ms 1192 KB Output is correct
9 Correct 4 ms 1236 KB Output is correct
10 Correct 1 ms 724 KB Output is correct
11 Correct 4 ms 1108 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 1108 KB Output is correct
2 Correct 5 ms 1108 KB Output is correct
3 Correct 5 ms 1108 KB Output is correct
4 Correct 6 ms 1192 KB Output is correct
5 Correct 5 ms 1108 KB Output is correct
6 Correct 6 ms 1084 KB Output is correct
7 Correct 4 ms 1108 KB Output is correct
8 Correct 5 ms 1108 KB Output is correct
9 Correct 4 ms 1108 KB Output is correct
10 Correct 4 ms 1060 KB Output is correct
11 Correct 3 ms 1108 KB Output is correct
12 Correct 1 ms 468 KB Output is correct
13 Correct 1 ms 468 KB Output is correct
14 Correct 1 ms 468 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 468 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct
21 Correct 1 ms 468 KB Output is correct
22 Correct 1 ms 468 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 468 KB Output is correct
25 Correct 1 ms 540 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 468 KB Output is correct
28 Correct 1 ms 468 KB Output is correct
29 Correct 1 ms 536 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 0 ms 468 KB Output is correct
32 Correct 54 ms 1464 KB Output is correct
33 Correct 94 ms 1364 KB Output is correct
34 Correct 124 ms 1448 KB Output is correct
35 Correct 6 ms 1364 KB Output is correct
36 Correct 9 ms 1440 KB Output is correct
37 Correct 7 ms 1328 KB Output is correct
38 Correct 6 ms 1428 KB Output is correct
39 Correct 6 ms 1364 KB Output is correct
40 Correct 5 ms 1364 KB Output is correct
41 Correct 5 ms 1364 KB Output is correct
42 Correct 5 ms 1364 KB Output is correct
43 Correct 5 ms 1236 KB Output is correct
44 Correct 6 ms 1352 KB Output is correct
45 Correct 6 ms 1364 KB Output is correct
46 Correct 6 ms 1364 KB Output is correct
47 Correct 6 ms 1364 KB Output is correct
48 Correct 6 ms 1364 KB Output is correct
49 Correct 190 ms 1152 KB Output is correct
50 Correct 5 ms 1364 KB Output is correct
51 Correct 5 ms 1236 KB Output is correct
52 Correct 6 ms 1364 KB Output is correct
53 Correct 6 ms 1364 KB Output is correct
54 Correct 6 ms 1364 KB Output is correct
55 Correct 6 ms 1404 KB Output is correct
56 Correct 6 ms 1364 KB Output is correct
57 Correct 5 ms 1360 KB Output is correct
58 Correct 7 ms 1364 KB Output is correct
59 Correct 6 ms 1364 KB Output is correct
60 Correct 6 ms 1364 KB Output is correct
61 Correct 6 ms 1364 KB Output is correct
62 Correct 6 ms 1364 KB Output is correct
63 Correct 6 ms 1236 KB Output is correct
64 Correct 6 ms 1364 KB Output is correct
65 Correct 6 ms 1580 KB Output is correct
66 Correct 7 ms 1700 KB Output is correct
67 Correct 5 ms 1492 KB Output is correct
68 Correct 1 ms 544 KB Output is correct
69 Correct 3 ms 1152 KB Output is correct
70 Correct 5 ms 1180 KB Output is correct
71 Correct 4 ms 1192 KB Output is correct
72 Correct 4 ms 1236 KB Output is correct
73 Correct 1 ms 724 KB Output is correct
74 Correct 4 ms 1108 KB Output is correct
75 Correct 72 ms 1624 KB Output is correct
76 Correct 97 ms 1676 KB Output is correct
77 Correct 127 ms 1656 KB Output is correct
78 Correct 129 ms 1660 KB Output is correct
79 Correct 127 ms 1656 KB Output is correct
80 Correct 7 ms 1604 KB Output is correct
81 Correct 7 ms 1704 KB Output is correct
82 Correct 7 ms 1524 KB Output is correct
83 Correct 8 ms 1620 KB Output is correct
84 Correct 8 ms 1620 KB Output is correct
85 Correct 7 ms 1616 KB Output is correct
86 Correct 9 ms 1620 KB Output is correct
87 Correct 6 ms 1628 KB Output is correct
88 Correct 11 ms 1620 KB Output is correct
89 Correct 6 ms 1620 KB Output is correct
90 Correct 15 ms 1620 KB Output is correct
91 Correct 16 ms 1640 KB Output is correct
92 Correct 26 ms 1576 KB Output is correct
93 Correct 22 ms 1624 KB Output is correct
94 Correct 24 ms 1576 KB Output is correct
95 Correct 27 ms 1580 KB Output is correct
96 Correct 58 ms 1556 KB Output is correct
97 Correct 207 ms 1636 KB Output is correct
98 Correct 304 ms 1596 KB Output is correct
99 Correct 337 ms 1696 KB Output is correct
100 Correct 179 ms 1280 KB Output is correct