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Submission #704033

# Submission time Handle Problem Language Result Execution time Memory
704033 2023-03-01T12:01:35 Z Abrar_Al_Samit Toy Train (IOI17_train) C++17
100 / 100
 1642 ms 1656 KB 
#include<bits/stdc++.h>
#include "train.h"
using namespace std;

const int nax = 5000;
int n, m;
vector<int>g[nax], gt[nax];

vector<int> who_wins(vector<int> A, vector<int> R, vector<int> u, vector<int> v) {
	n = A.size(), m = u.size();
	for(int i=0; i<m; ++i) {
		g[u[i]].push_back(v[i]);
		gt[v[i]].push_back(u[i]);
	}
	vector<int>nontrap(n), trap(n), need(n);

	int tt = n;
	while(tt--) {
		queue<int>q;
		for(int i=0; i<n; ++i) {
			need[i] = trap[i] = nontrap[i] = 0;
		}
		for(int i=0; i<n; ++i) {
			if(R[i]) nontrap[i] = 1, q.push(i);
			else trap[i] = 1;
		}

		for(int i=0; i<n; ++i) {
			if(nontrap[i]) continue;
			if(A[i]) need[i] = 1;
			else need[i] = g[i].size();
		}


		while(!q.empty()) {
			int v = q.front(); q.pop();
			trap[v] = 0, nontrap[v] = 1;
			for(int to : gt[v]) {
				if(--need[to]==0) {
					q.push(to);
				}
			}
		}

		for(int x=0; x<n; ++x) if(nontrap[x]) {
			bool all = true, one = false;
			for(int to : g[x]) {
				all &= trap[to];
				one |= trap[to];
			}

			if((A[x] && all) || (!A[x] && one)) {
				nontrap[x] = 0, trap[x] = 1, R[x] = 0;
			}
		}
	}
	return nontrap;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 665 ms 1172 KB Output is correct
2 Correct 635 ms 1176 KB Output is correct
3 Correct 663 ms 1160 KB Output is correct
4 Correct 623 ms 1168 KB Output is correct
5 Correct 642 ms 1164 KB Output is correct
6 Correct 690 ms 1160 KB Output is correct
7 Correct 287 ms 1164 KB Output is correct
8 Correct 909 ms 1160 KB Output is correct
9 Correct 722 ms 1192 KB Output is correct
10 Correct 691 ms 1124 KB Output is correct
11 Correct 609 ms 1128 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 540 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 536 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 536 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 536 KB Output is correct
17 Correct 1 ms 540 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 536 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 228 ms 1572 KB Output is correct
2 Correct 300 ms 1568 KB Output is correct
3 Correct 351 ms 1560 KB Output is correct
4 Correct 1414 ms 1524 KB Output is correct
5 Correct 1056 ms 1520 KB Output is correct
6 Correct 187 ms 1512 KB Output is correct
7 Correct 1524 ms 1520 KB Output is correct
8 Correct 740 ms 1508 KB Output is correct
9 Correct 170 ms 1488 KB Output is correct
10 Correct 1099 ms 1492 KB Output is correct
11 Correct 856 ms 1456 KB Output is correct
12 Correct 163 ms 1484 KB Output is correct
13 Correct 1451 ms 1520 KB Output is correct
14 Correct 1485 ms 1524 KB Output is correct
15 Correct 1464 ms 1528 KB Output is correct
16 Correct 1453 ms 1524 KB Output is correct
17 Correct 1426 ms 1528 KB Output is correct
18 Correct 411 ms 1248 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 1055 ms 1376 KB Output is correct
2 Correct 1119 ms 1484 KB Output is correct
3 Correct 205 ms 1388 KB Output is correct
4 Correct 154 ms 1512 KB Output is correct
5 Correct 815 ms 1508 KB Output is correct
6 Correct 1186 ms 1612 KB Output is correct
7 Correct 1084 ms 1504 KB Output is correct
8 Correct 177 ms 1372 KB Output is correct
9 Correct 950 ms 1452 KB Output is correct
10 Correct 1337 ms 1532 KB Output is correct
11 Correct 1231 ms 1536 KB Output is correct
12 Correct 1341 ms 1576 KB Output is correct
13 Correct 906 ms 1512 KB Output is correct
14 Correct 1117 ms 1440 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1031 ms 1512 KB Output is correct
2 Correct 1620 ms 1520 KB Output is correct
3 Correct 1421 ms 1512 KB Output is correct
4 Correct 1636 ms 1432 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 189 ms 1112 KB Output is correct
7 Correct 38 ms 1108 KB Output is correct
8 Correct 6 ms 1236 KB Output is correct
9 Correct 32 ms 1236 KB Output is correct
10 Correct 3 ms 724 KB Output is correct
11 Correct 69 ms 1108 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 665 ms 1172 KB Output is correct
2 Correct 635 ms 1176 KB Output is correct
3 Correct 663 ms 1160 KB Output is correct
4 Correct 623 ms 1168 KB Output is correct
5 Correct 642 ms 1164 KB Output is correct
6 Correct 690 ms 1160 KB Output is correct
7 Correct 287 ms 1164 KB Output is correct
8 Correct 909 ms 1160 KB Output is correct
9 Correct 722 ms 1192 KB Output is correct
10 Correct 691 ms 1124 KB Output is correct
11 Correct 609 ms 1128 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 540 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 536 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 536 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 468 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 536 KB Output is correct
28 Correct 1 ms 540 KB Output is correct
29 Correct 1 ms 468 KB Output is correct
30 Correct 1 ms 468 KB Output is correct
31 Correct 1 ms 536 KB Output is correct
32 Correct 228 ms 1572 KB Output is correct
33 Correct 300 ms 1568 KB Output is correct
34 Correct 351 ms 1560 KB Output is correct
35 Correct 1414 ms 1524 KB Output is correct
36 Correct 1056 ms 1520 KB Output is correct
37 Correct 187 ms 1512 KB Output is correct
38 Correct 1524 ms 1520 KB Output is correct
39 Correct 740 ms 1508 KB Output is correct
40 Correct 170 ms 1488 KB Output is correct
41 Correct 1099 ms 1492 KB Output is correct
42 Correct 856 ms 1456 KB Output is correct
43 Correct 163 ms 1484 KB Output is correct
44 Correct 1451 ms 1520 KB Output is correct
45 Correct 1485 ms 1524 KB Output is correct
46 Correct 1464 ms 1528 KB Output is correct
47 Correct 1453 ms 1524 KB Output is correct
48 Correct 1426 ms 1528 KB Output is correct
49 Correct 411 ms 1248 KB Output is correct
50 Correct 1055 ms 1376 KB Output is correct
51 Correct 1119 ms 1484 KB Output is correct
52 Correct 205 ms 1388 KB Output is correct
53 Correct 154 ms 1512 KB Output is correct
54 Correct 815 ms 1508 KB Output is correct
55 Correct 1186 ms 1612 KB Output is correct
56 Correct 1084 ms 1504 KB Output is correct
57 Correct 177 ms 1372 KB Output is correct
58 Correct 950 ms 1452 KB Output is correct
59 Correct 1337 ms 1532 KB Output is correct
60 Correct 1231 ms 1536 KB Output is correct
61 Correct 1341 ms 1576 KB Output is correct
62 Correct 906 ms 1512 KB Output is correct
63 Correct 1117 ms 1440 KB Output is correct
64 Correct 1031 ms 1512 KB Output is correct
65 Correct 1620 ms 1520 KB Output is correct
66 Correct 1421 ms 1512 KB Output is correct
67 Correct 1636 ms 1432 KB Output is correct
68 Correct 1 ms 596 KB Output is correct
69 Correct 189 ms 1112 KB Output is correct
70 Correct 38 ms 1108 KB Output is correct
71 Correct 6 ms 1236 KB Output is correct
72 Correct 32 ms 1236 KB Output is correct
73 Correct 3 ms 724 KB Output is correct
74 Correct 69 ms 1108 KB Output is correct
75 Correct 257 ms 1620 KB Output is correct
76 Correct 323 ms 1656 KB Output is correct
77 Correct 387 ms 1648 KB Output is correct
78 Correct 416 ms 1636 KB Output is correct
79 Correct 387 ms 1640 KB Output is correct
80 Correct 1642 ms 1600 KB Output is correct
81 Correct 665 ms 1596 KB Output is correct
82 Correct 1000 ms 1588 KB Output is correct
83 Correct 1119 ms 1600 KB Output is correct
84 Correct 861 ms 1596 KB Output is correct
85 Correct 180 ms 1580 KB Output is correct
86 Correct 692 ms 1600 KB Output is correct
87 Correct 163 ms 1588 KB Output is correct
88 Correct 422 ms 1588 KB Output is correct
89 Correct 739 ms 1588 KB Output is correct
90 Correct 182 ms 1596 KB Output is correct
91 Correct 290 ms 1596 KB Output is correct
92 Correct 729 ms 1596 KB Output is correct
93 Correct 551 ms 1584 KB Output is correct
94 Correct 427 ms 1612 KB Output is correct
95 Correct 697 ms 1612 KB Output is correct
96 Correct 1185 ms 1508 KB Output is correct
97 Correct 486 ms 1604 KB Output is correct
98 Correct 594 ms 1576 KB Output is correct
99 Correct 513 ms 1560 KB Output is correct
100 Correct 372 ms 1236 KB Output is correct