oj.uz

Submission #1025873

# Submission time Handle Problem Language Result Execution time Memory
1025873 2024-07-17T10:54:08 Z amirhoseinfar1385 Toy Train (IOI17_train) C++17
100 / 100
 1292 ms 3068 KB 
#include "train.h"
#include<bits/stdc++.h>
using namespace std;
const int maxn=30000+10;
vector<int>adj[maxn],revadj[maxn];
int n,shar[maxn],arez[maxn],m,dp[maxn],vas[maxn],dide[maxn],cn[maxn];

void bfs(){
	vector<int>bf;
	for(int i=0;i<n;i++){
		vas[i]=0;
		if(dp[i]==1){
			bf.push_back(i);
		}
		cn[i]=0;
	}
	for(int u=0;u<(int)bf.size();u++){
		for(auto x:revadj[bf[u]]){
			cn[x]++;
		}
		for(auto i:revadj[bf[u]]){
			if(dp[i]){
				continue;
			}
			int cnt=cn[i];
			int f=0;
	//		for(auto x:adj[i]){
	//			if(dp[x]==1){
	//				cnt++;
	//			}
	//		}
			if(arez[i]){
				if(cnt>0){
					dp[i]=1;
					bf.push_back(i);
				}else{
					dp[i]=0;
				}
			}else{
				if(cnt!=(int)adj[i].size()){
					dp[i]=0;
				}else{
					dp[i]=1;
					bf.push_back(i);
				}
			}
		}
	}
}

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();
	m=(int)u.size();
	for(int i=0;i<=n;i++){
		adj[i].clear();
		revadj[i].clear();
		shar[i]=vas[i]=dide[i]=dp[i]=arez[i]=0;
	}
	for(int i=0;i<n;i++){
		if(a[i]){
			arez[i]=1;
		}
		if(r[i]){
			shar[i]=1;
		}
	}
	for(int i=0;i<m;i++){
		revadj[v[i]].push_back(u[i]);
		adj[u[i]].push_back(v[i]);
	}
	for(int nago=0;nago<=n;nago++){
		for(int i=0;i<n;i++){
			dp[i]=shar[i];
		}
		bfs();
	/*for(int asd=0;asd<=n;asd++){
		for(int i=0;i<n;i++){
			if(dp[i]){
				continue;
			}
			int cnt=0;
			int f=0;
			for(auto x:adj[i]){
				if(dp[x]==1){
					cnt++;
				}
			}
			if(arez[i]){
				if(cnt>0){
					dp[i]=1;
				}else{
					dp[i]=0;
				}
			}else{
				if(cnt!=(int)adj[i].size()){
					dp[i]=0;
				}else{
					dp[i]=1;
				}
			}
		}
	}*/
		if(nago!=n){
			for(int i=0;i<n;i++){
				if(shar[i]==1){
					int cnt=0;
					for(auto x:adj[i]){
						if(dp[x]==1){
							cnt++;
						}
					}
					if(arez[i]){
						shar[i]=(cnt>=1);
					}else{
						shar[i]=(cnt==(int)adj[i].size());
					}
				}
			}
		}
	}
	vector<int>res(n);
	for(int i=0;i<n;i++){
		res[i]=dp[i];
	}
	return res;
}

Compilation message

train.cpp: In function 'void bfs()':
train.cpp:26:8: warning: unused variable 'f' [-Wunused-variable]
   26 |    int f=0;
      |        ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 234 ms 2396 KB Output is correct
2 Correct 221 ms 2392 KB Output is correct
3 Correct 234 ms 2396 KB Output is correct
4 Correct 226 ms 2396 KB Output is correct
5 Correct 222 ms 2392 KB Output is correct
6 Correct 224 ms 2392 KB Output is correct
7 Correct 123 ms 2396 KB Output is correct
8 Correct 332 ms 2396 KB Output is correct
9 Correct 256 ms 2468 KB Output is correct
10 Correct 213 ms 2392 KB Output is correct
11 Correct 218 ms 2392 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1624 KB Output is correct
2 Correct 1 ms 1628 KB Output is correct
3 Correct 1 ms 1628 KB Output is correct
4 Correct 1 ms 1628 KB Output is correct
5 Correct 1 ms 1628 KB Output is correct
6 Correct 1 ms 1628 KB Output is correct
7 Correct 1 ms 1624 KB Output is correct
8 Correct 1 ms 1628 KB Output is correct
9 Correct 1 ms 1628 KB Output is correct
10 Correct 1 ms 1628 KB Output is correct
11 Correct 1 ms 1628 KB Output is correct
12 Correct 1 ms 1628 KB Output is correct
13 Correct 1 ms 1628 KB Output is correct
14 Correct 1 ms 1628 KB Output is correct
15 Correct 1 ms 1628 KB Output is correct
16 Correct 1 ms 1628 KB Output is correct
17 Correct 1 ms 1628 KB Output is correct
18 Correct 1 ms 1628 KB Output is correct
19 Correct 1 ms 1628 KB Output is correct
20 Correct 1 ms 1624 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 2900 KB Output is correct
2 Correct 149 ms 2652 KB Output is correct
3 Correct 158 ms 2860 KB Output is correct
4 Correct 857 ms 2648 KB Output is correct
5 Correct 357 ms 2904 KB Output is correct
6 Correct 94 ms 2648 KB Output is correct
7 Correct 884 ms 2820 KB Output is correct
8 Correct 265 ms 2648 KB Output is correct
9 Correct 87 ms 2740 KB Output is correct
10 Correct 328 ms 2648 KB Output is correct
11 Correct 259 ms 2648 KB Output is correct
12 Correct 91 ms 2900 KB Output is correct
13 Correct 776 ms 2832 KB Output is correct
14 Correct 788 ms 2648 KB Output is correct
15 Correct 803 ms 2652 KB Output is correct
16 Correct 756 ms 2828 KB Output is correct
17 Correct 761 ms 2836 KB Output is correct
18 Correct 191 ms 2568 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 660 ms 2676 KB Output is correct
2 Correct 496 ms 2648 KB Output is correct
3 Correct 114 ms 2648 KB Output is correct
4 Correct 87 ms 2652 KB Output is correct
5 Correct 396 ms 2796 KB Output is correct
6 Correct 573 ms 2896 KB Output is correct
7 Correct 519 ms 2652 KB Output is correct
8 Correct 107 ms 2652 KB Output is correct
9 Correct 774 ms 2648 KB Output is correct
10 Correct 1124 ms 2652 KB Output is correct
11 Correct 858 ms 2648 KB Output is correct
12 Correct 1233 ms 2832 KB Output is correct
13 Correct 494 ms 2800 KB Output is correct
14 Correct 629 ms 2652 KB Output is correct

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 468 ms 2808 KB Output is correct
2 Correct 1131 ms 2828 KB Output is correct
3 Correct 1029 ms 2808 KB Output is correct
4 Correct 1161 ms 2652 KB Output is correct
5 Correct 1 ms 1884 KB Output is correct
6 Correct 85 ms 2416 KB Output is correct
7 Correct 19 ms 2392 KB Output is correct
8 Correct 4 ms 2396 KB Output is correct
9 Correct 16 ms 2624 KB Output is correct
10 Correct 4 ms 2140 KB Output is correct
11 Correct 29 ms 2396 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 234 ms 2396 KB Output is correct
2 Correct 221 ms 2392 KB Output is correct
3 Correct 234 ms 2396 KB Output is correct
4 Correct 226 ms 2396 KB Output is correct
5 Correct 222 ms 2392 KB Output is correct
6 Correct 224 ms 2392 KB Output is correct
7 Correct 123 ms 2396 KB Output is correct
8 Correct 332 ms 2396 KB Output is correct
9 Correct 256 ms 2468 KB Output is correct
10 Correct 213 ms 2392 KB Output is correct
11 Correct 218 ms 2392 KB Output is correct
12 Correct 1 ms 1624 KB Output is correct
13 Correct 1 ms 1628 KB Output is correct
14 Correct 1 ms 1628 KB Output is correct
15 Correct 1 ms 1628 KB Output is correct
16 Correct 1 ms 1628 KB Output is correct
17 Correct 1 ms 1628 KB Output is correct
18 Correct 1 ms 1624 KB Output is correct
19 Correct 1 ms 1628 KB Output is correct
20 Correct 1 ms 1628 KB Output is correct
21 Correct 1 ms 1628 KB Output is correct
22 Correct 1 ms 1628 KB Output is correct
23 Correct 1 ms 1628 KB Output is correct
24 Correct 1 ms 1628 KB Output is correct
25 Correct 1 ms 1628 KB Output is correct
26 Correct 1 ms 1628 KB Output is correct
27 Correct 1 ms 1628 KB Output is correct
28 Correct 1 ms 1628 KB Output is correct
29 Correct 1 ms 1628 KB Output is correct
30 Correct 1 ms 1628 KB Output is correct
31 Correct 1 ms 1624 KB Output is correct
32 Correct 127 ms 2900 KB Output is correct
33 Correct 149 ms 2652 KB Output is correct
34 Correct 158 ms 2860 KB Output is correct
35 Correct 857 ms 2648 KB Output is correct
36 Correct 357 ms 2904 KB Output is correct
37 Correct 94 ms 2648 KB Output is correct
38 Correct 884 ms 2820 KB Output is correct
39 Correct 265 ms 2648 KB Output is correct
40 Correct 87 ms 2740 KB Output is correct
41 Correct 328 ms 2648 KB Output is correct
42 Correct 259 ms 2648 KB Output is correct
43 Correct 91 ms 2900 KB Output is correct
44 Correct 776 ms 2832 KB Output is correct
45 Correct 788 ms 2648 KB Output is correct
46 Correct 803 ms 2652 KB Output is correct
47 Correct 756 ms 2828 KB Output is correct
48 Correct 761 ms 2836 KB Output is correct
49 Correct 191 ms 2568 KB Output is correct
50 Correct 660 ms 2676 KB Output is correct
51 Correct 496 ms 2648 KB Output is correct
52 Correct 114 ms 2648 KB Output is correct
53 Correct 87 ms 2652 KB Output is correct
54 Correct 396 ms 2796 KB Output is correct
55 Correct 573 ms 2896 KB Output is correct
56 Correct 519 ms 2652 KB Output is correct
57 Correct 107 ms 2652 KB Output is correct
58 Correct 774 ms 2648 KB Output is correct
59 Correct 1124 ms 2652 KB Output is correct
60 Correct 858 ms 2648 KB Output is correct
61 Correct 1233 ms 2832 KB Output is correct
62 Correct 494 ms 2800 KB Output is correct
63 Correct 629 ms 2652 KB Output is correct
64 Correct 468 ms 2808 KB Output is correct
65 Correct 1131 ms 2828 KB Output is correct
66 Correct 1029 ms 2808 KB Output is correct
67 Correct 1161 ms 2652 KB Output is correct
68 Correct 1 ms 1884 KB Output is correct
69 Correct 85 ms 2416 KB Output is correct
70 Correct 19 ms 2392 KB Output is correct
71 Correct 4 ms 2396 KB Output is correct
72 Correct 16 ms 2624 KB Output is correct
73 Correct 4 ms 2140 KB Output is correct
74 Correct 29 ms 2396 KB Output is correct
75 Correct 139 ms 3048 KB Output is correct
76 Correct 164 ms 2904 KB Output is correct
77 Correct 172 ms 2904 KB Output is correct
78 Correct 174 ms 2908 KB Output is correct
79 Correct 174 ms 3068 KB Output is correct
80 Correct 1292 ms 3040 KB Output is correct
81 Correct 263 ms 2888 KB Output is correct
82 Correct 403 ms 3004 KB Output is correct
83 Correct 364 ms 2904 KB Output is correct
84 Correct 291 ms 2904 KB Output is correct
85 Correct 98 ms 3000 KB Output is correct
86 Correct 246 ms 3032 KB Output is correct
87 Correct 96 ms 3000 KB Output is correct
88 Correct 174 ms 2908 KB Output is correct
89 Correct 340 ms 2908 KB Output is correct
90 Correct 98 ms 2904 KB Output is correct
91 Correct 122 ms 2908 KB Output is correct
92 Correct 252 ms 3040 KB Output is correct
93 Correct 245 ms 3036 KB Output is correct
94 Correct 171 ms 2904 KB Output is correct
95 Correct 267 ms 2908 KB Output is correct
96 Correct 548 ms 2908 KB Output is correct
97 Correct 225 ms 2904 KB Output is correct
98 Correct 283 ms 3016 KB Output is correct
99 Correct 237 ms 2904 KB Output is correct
100 Correct 186 ms 2648 KB Output is correct