oj.uz

Submission #752305

# Submission time Handle Problem Language Result Execution time Memory
752305 2023-06-02T17:14:07 Z definitelynotmee Toy Train (IOI17_train) C++17
100 / 100
 479 ms 1364 KB 
#include "train.h"
#include<bits/stdc++.h>
#define all(x) x.begin(), x.end()
#define ff first
#define ss second
using namespace std;
template <typename T>
using bstring = basic_string<T>;
template <typename T>
using matrix = vector<vector<T>>;
typedef unsigned int uint;
typedef unsigned long long ull;
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
const ll INFL = (1LL<<62)-1;
const int INF = (1<<30)-1;
const double EPS = 1e-7;
const int MOD = 998244353;
const int RANDOM = chrono::high_resolution_clock::now().time_since_epoch().count();
const int MAXN = 1e6+1;

std::vector<int> who_wins(std::vector<int> a, std::vector<int> r, std::vector<int> u, std::vector<int> v) {
	int n = a.size();
	vector<bstring<int>> g(n), rev(n);

	for(int i = 0; i < u.size(); i++){
		g[u[i]].push_back(v[i]);
		rev[v[i]].push_back(u[i]);
	}

	vector<int> resp(n,1);

	auto topo_sort=[&]{

		vector<int> degree(n);
		vector<int> reach(n);
		vector<int> st;

		for(int i = 0; i < n; i++){
			if(!resp[i])
				continue;

			if(a[i]){
				for(int j : g[i]){
					if(resp[j] && r[j]){
						st.push_back(i);
						degree[i] = -1;
						break;
					}
				}
			} else {
				for(int j : g[i]){
					degree[i]+=!(resp[j] && r[j]);
				}

				if(degree[i] == 0)
					st.push_back(i);
			}
		}

		while(!st.empty()){
			int cur = st.back();
			st.pop_back();
			reach[cur] = 1;

			for(int i : rev[cur]){
				if(!resp[i])
					continue;
				
				if(a[i]){
					degree[i]--;
					if(degree[i] == -1){
						st.push_back(i);
					}
				} else {
					if(!r[cur]){
						degree[i]--;
						if(degree[i] == 0){
							st.push_back(i);
						}
					}
				}
			}
		}

		bool ret = 0;

		for(int i = 0; i < n; i++){
			ret|=reach[i]^resp[i];
			resp[i]=reach[i];
		}

		return ret;
	};

	while(topo_sort()){}

	return resp;
}

Compilation message

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:27:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |  for(int i = 0; i < u.size(); i++){
      |                 ~~^~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 852 KB Output is correct
2 Correct 5 ms 852 KB Output is correct
3 Correct 5 ms 852 KB Output is correct
4 Correct 5 ms 900 KB Output is correct
5 Correct 5 ms 852 KB Output is correct
6 Correct 5 ms 852 KB Output is correct
7 Correct 4 ms 852 KB Output is correct
8 Correct 4 ms 852 KB Output is correct
9 Correct 4 ms 852 KB Output is correct
10 Correct 4 ms 852 KB Output is correct
11 Correct 3 ms 852 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 0 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 0 ms 212 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 97 ms 1236 KB Output is correct
2 Correct 167 ms 1236 KB Output is correct
3 Correct 227 ms 1236 KB Output is correct
4 Correct 7 ms 1364 KB Output is correct
5 Correct 12 ms 1364 KB Output is correct
6 Correct 8 ms 1236 KB Output is correct
7 Correct 6 ms 1364 KB Output is correct
8 Correct 7 ms 1236 KB Output is correct
9 Correct 6 ms 1108 KB Output is correct
10 Correct 7 ms 1232 KB Output is correct
11 Correct 8 ms 1236 KB Output is correct
12 Correct 6 ms 1108 KB Output is correct
13 Correct 7 ms 1260 KB Output is correct
14 Correct 7 ms 1364 KB Output is correct
15 Correct 6 ms 1364 KB Output is correct
16 Correct 7 ms 1364 KB Output is correct
17 Correct 7 ms 1364 KB Output is correct
18 Correct 195 ms 952 KB Output is correct

Subtask #4
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 1108 KB Output is correct
2 Correct 6 ms 1236 KB Output is correct
3 Correct 7 ms 1344 KB Output is correct
4 Correct 6 ms 1196 KB Output is correct
5 Correct 7 ms 1256 KB Output is correct
6 Correct 9 ms 1236 KB Output is correct
7 Correct 7 ms 1256 KB Output is correct
8 Correct 6 ms 1236 KB Output is correct
9 Correct 7 ms 1236 KB Output is correct
10 Correct 7 ms 1364 KB Output is correct
11 Correct 7 ms 1364 KB Output is correct
12 Correct 7 ms 1260 KB Output is correct
13 Correct 7 ms 1236 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 7 ms 1236 KB Output is correct
2 Correct 6 ms 1364 KB Output is correct
3 Correct 7 ms 1236 KB Output is correct
4 Correct 6 ms 1236 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 3 ms 772 KB Output is correct
7 Correct 6 ms 852 KB Output is correct
8 Correct 5 ms 832 KB Output is correct
9 Correct 5 ms 852 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 4 ms 816 KB Output is correct

Subtask #6
51.0 / 51.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 852 KB Output is correct
2 Correct 5 ms 852 KB Output is correct
3 Correct 5 ms 852 KB Output is correct
4 Correct 5 ms 900 KB Output is correct
5 Correct 5 ms 852 KB Output is correct
6 Correct 5 ms 852 KB Output is correct
7 Correct 4 ms 852 KB Output is correct
8 Correct 4 ms 852 KB Output is correct
9 Correct 4 ms 852 KB Output is correct
10 Correct 4 ms 852 KB Output is correct
11 Correct 3 ms 852 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 0 ms 212 KB Output is correct
15 Correct 0 ms 212 KB Output is correct
16 Correct 0 ms 212 KB Output is correct
17 Correct 0 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 212 KB Output is correct
20 Correct 1 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 0 ms 212 KB Output is correct
23 Correct 0 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 0 ms 212 KB Output is correct
28 Correct 0 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 0 ms 212 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Correct 97 ms 1236 KB Output is correct
33 Correct 167 ms 1236 KB Output is correct
34 Correct 227 ms 1236 KB Output is correct
35 Correct 7 ms 1364 KB Output is correct
36 Correct 12 ms 1364 KB Output is correct
37 Correct 8 ms 1236 KB Output is correct
38 Correct 6 ms 1364 KB Output is correct
39 Correct 7 ms 1236 KB Output is correct
40 Correct 6 ms 1108 KB Output is correct
41 Correct 7 ms 1232 KB Output is correct
42 Correct 8 ms 1236 KB Output is correct
43 Correct 6 ms 1108 KB Output is correct
44 Correct 7 ms 1260 KB Output is correct
45 Correct 7 ms 1364 KB Output is correct
46 Correct 6 ms 1364 KB Output is correct
47 Correct 7 ms 1364 KB Output is correct
48 Correct 7 ms 1364 KB Output is correct
49 Correct 195 ms 952 KB Output is correct
50 Correct 8 ms 1108 KB Output is correct
51 Correct 6 ms 1236 KB Output is correct
52 Correct 7 ms 1344 KB Output is correct
53 Correct 6 ms 1196 KB Output is correct
54 Correct 7 ms 1256 KB Output is correct
55 Correct 9 ms 1236 KB Output is correct
56 Correct 7 ms 1256 KB Output is correct
57 Correct 6 ms 1236 KB Output is correct
58 Correct 7 ms 1236 KB Output is correct
59 Correct 7 ms 1364 KB Output is correct
60 Correct 7 ms 1364 KB Output is correct
61 Correct 7 ms 1260 KB Output is correct
62 Correct 7 ms 1236 KB Output is correct
63 Correct 6 ms 1236 KB Output is correct
64 Correct 7 ms 1236 KB Output is correct
65 Correct 6 ms 1364 KB Output is correct
66 Correct 7 ms 1236 KB Output is correct
67 Correct 6 ms 1236 KB Output is correct
68 Correct 1 ms 340 KB Output is correct
69 Correct 3 ms 772 KB Output is correct
70 Correct 6 ms 852 KB Output is correct
71 Correct 5 ms 832 KB Output is correct
72 Correct 5 ms 852 KB Output is correct
73 Correct 2 ms 468 KB Output is correct
74 Correct 4 ms 816 KB Output is correct
75 Correct 169 ms 1236 KB Output is correct
76 Correct 207 ms 1236 KB Output is correct
77 Correct 277 ms 1236 KB Output is correct
78 Correct 261 ms 1244 KB Output is correct
79 Correct 271 ms 1232 KB Output is correct
80 Correct 8 ms 1264 KB Output is correct
81 Correct 8 ms 1264 KB Output is correct
82 Correct 8 ms 1236 KB Output is correct
83 Correct 10 ms 1364 KB Output is correct
84 Correct 11 ms 1364 KB Output is correct
85 Correct 9 ms 1236 KB Output is correct
86 Correct 11 ms 1244 KB Output is correct
87 Correct 7 ms 1236 KB Output is correct
88 Correct 15 ms 1364 KB Output is correct
89 Correct 8 ms 1236 KB Output is correct
90 Correct 22 ms 1356 KB Output is correct
91 Correct 23 ms 1364 KB Output is correct
92 Correct 38 ms 1364 KB Output is correct
93 Correct 31 ms 1236 KB Output is correct
94 Correct 34 ms 1236 KB Output is correct
95 Correct 37 ms 1364 KB Output is correct
96 Correct 84 ms 1280 KB Output is correct
97 Correct 280 ms 1364 KB Output is correct
98 Correct 456 ms 1340 KB Output is correct
99 Correct 479 ms 1324 KB Output is correct
100 Correct 202 ms 968 KB Output is correct