oj.uz

Submission #967636

# Submission time Handle Problem Language Result Execution time Memory
967636 2024-04-22T14:35:07 Z dong_gas Stranded Far From Home (BOI22_island) C++17
100 / 100
 136 ms 30396 KB 
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/extc++.h>
#define all(v) v.begin(), v.end()
#define zip(v) sort(all(v)), v.erase(unique(all(v)), v.end())
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef pair<int, int> pint;
typedef tree<ll, null_type, less<ll>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;
 
int n, m, a[200020];
vector<int> adj[200020], can[200020];
bool visited[200020];
vector<tuple<int,int,int>> edges;
 
struct disjoin_set{
	int papa[200020], sz[200020];
	ll sum[200020];
	void init() {
		for(int i=1;i<=n;i++) sum[i]=a[i], sz[i]=1, papa[i]=-1, can[i].emplace_back(i);
	}
	int Find(int u) {
		if(papa[u]==-1) return u;
		return papa[u]=Find(papa[u]);
	}
	bool Union(int u,int v) {
		u=Find(u), v=Find(v);
		if(u==v) return false;
		if(sz[u]<sz[v]) swap(u,v);
		papa[v]=u;
		sz[u]+=sz[v];
		sum[u]+=sum[v];
		for(auto x: can[v]) can[u].emplace_back(x);
		return true;
	}
} djs;

 
void solve() {
    cin>>n>>m;
	for(int i=1;i<=n;i++) cin>>a[i];
	while(m --> 0) {
		int u, v; cin>>u>>v;
		if(a[u]<a[v]) swap(u,v);
		edges.push_back({a[u],u,v});
	}
	sort(all(edges));
	djs.init();
	for(auto& [_, u, v]: edges) {
		if(djs.sum[djs.Find(v)]<a[u]) can[djs.Find(v)].clear();
		djs.Union(u,v);
	}
	for(int& x: can[djs.Find(1)]) visited[x]=1;
	for(int i=1;i<=n;i++) cout<<visited[i];	
}
 
int main() {
    cin.tie(0)->sync_with_stdio(0);
    int tc=1; //cin>>tc;
    while(tc--) solve();
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12892 KB Output is correct
2 Correct 3 ms 12892 KB Output is correct
3 Correct 4 ms 12892 KB Output is correct
4 Correct 4 ms 13148 KB Output is correct
5 Correct 4 ms 13064 KB Output is correct
6 Correct 4 ms 13400 KB Output is correct
7 Correct 6 ms 13148 KB Output is correct
8 Correct 5 ms 12892 KB Output is correct
9 Correct 4 ms 13148 KB Output is correct
10 Correct 4 ms 13024 KB Output is correct
11 Correct 4 ms 13068 KB Output is correct
12 Correct 5 ms 13148 KB Output is correct
13 Correct 4 ms 13148 KB Output is correct
14 Correct 4 ms 13148 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12888 KB Output is correct
2 Correct 3 ms 12892 KB Output is correct
3 Correct 87 ms 27064 KB Output is correct
4 Correct 79 ms 26496 KB Output is correct
5 Correct 104 ms 28004 KB Output is correct
6 Correct 93 ms 28604 KB Output is correct
7 Correct 89 ms 28680 KB Output is correct
8 Correct 89 ms 26900 KB Output is correct
9 Correct 92 ms 30136 KB Output is correct
10 Correct 79 ms 25136 KB Output is correct
11 Correct 81 ms 26560 KB Output is correct
12 Correct 85 ms 25700 KB Output is correct
13 Correct 73 ms 26300 KB Output is correct
14 Correct 73 ms 26300 KB Output is correct
15 Correct 81 ms 27080 KB Output is correct
16 Correct 57 ms 26308 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12892 KB Output is correct
2 Correct 113 ms 29888 KB Output is correct
3 Correct 96 ms 29312 KB Output is correct
4 Correct 92 ms 27092 KB Output is correct
5 Correct 72 ms 26104 KB Output is correct
6 Correct 95 ms 29340 KB Output is correct
7 Correct 77 ms 27008 KB Output is correct
8 Correct 77 ms 27844 KB Output is correct
9 Correct 57 ms 26568 KB Output is correct
10 Correct 76 ms 25528 KB Output is correct
11 Correct 102 ms 26628 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 12892 KB Output is correct
2 Correct 105 ms 27428 KB Output is correct
3 Correct 99 ms 27664 KB Output is correct
4 Correct 104 ms 28540 KB Output is correct
5 Correct 109 ms 29816 KB Output is correct
6 Correct 96 ms 28348 KB Output is correct
7 Correct 80 ms 27068 KB Output is correct
8 Correct 69 ms 25280 KB Output is correct
9 Correct 67 ms 21188 KB Output is correct
10 Correct 96 ms 29780 KB Output is correct
11 Correct 81 ms 26300 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 12892 KB Output is correct
2 Correct 3 ms 12892 KB Output is correct
3 Correct 4 ms 12892 KB Output is correct
4 Correct 4 ms 13148 KB Output is correct
5 Correct 4 ms 13064 KB Output is correct
6 Correct 4 ms 13400 KB Output is correct
7 Correct 6 ms 13148 KB Output is correct
8 Correct 5 ms 12892 KB Output is correct
9 Correct 4 ms 13148 KB Output is correct
10 Correct 4 ms 13024 KB Output is correct
11 Correct 4 ms 13068 KB Output is correct
12 Correct 5 ms 13148 KB Output is correct
13 Correct 4 ms 13148 KB Output is correct
14 Correct 4 ms 13148 KB Output is correct
15 Correct 4 ms 12888 KB Output is correct
16 Correct 3 ms 12892 KB Output is correct
17 Correct 87 ms 27064 KB Output is correct
18 Correct 79 ms 26496 KB Output is correct
19 Correct 104 ms 28004 KB Output is correct
20 Correct 93 ms 28604 KB Output is correct
21 Correct 89 ms 28680 KB Output is correct
22 Correct 89 ms 26900 KB Output is correct
23 Correct 92 ms 30136 KB Output is correct
24 Correct 79 ms 25136 KB Output is correct
25 Correct 81 ms 26560 KB Output is correct
26 Correct 85 ms 25700 KB Output is correct
27 Correct 73 ms 26300 KB Output is correct
28 Correct 73 ms 26300 KB Output is correct
29 Correct 81 ms 27080 KB Output is correct
30 Correct 57 ms 26308 KB Output is correct
31 Correct 3 ms 12892 KB Output is correct
32 Correct 113 ms 29888 KB Output is correct
33 Correct 96 ms 29312 KB Output is correct
34 Correct 92 ms 27092 KB Output is correct
35 Correct 72 ms 26104 KB Output is correct
36 Correct 95 ms 29340 KB Output is correct
37 Correct 77 ms 27008 KB Output is correct
38 Correct 77 ms 27844 KB Output is correct
39 Correct 57 ms 26568 KB Output is correct
40 Correct 76 ms 25528 KB Output is correct
41 Correct 102 ms 26628 KB Output is correct
42 Correct 4 ms 12892 KB Output is correct
43 Correct 105 ms 27428 KB Output is correct
44 Correct 99 ms 27664 KB Output is correct
45 Correct 104 ms 28540 KB Output is correct
46 Correct 109 ms 29816 KB Output is correct
47 Correct 96 ms 28348 KB Output is correct
48 Correct 80 ms 27068 KB Output is correct
49 Correct 69 ms 25280 KB Output is correct
50 Correct 67 ms 21188 KB Output is correct
51 Correct 96 ms 29780 KB Output is correct
52 Correct 81 ms 26300 KB Output is correct
53 Correct 3 ms 12888 KB Output is correct
54 Correct 4 ms 13008 KB Output is correct
55 Correct 3 ms 12892 KB Output is correct
56 Correct 4 ms 13028 KB Output is correct
57 Correct 4 ms 13148 KB Output is correct
58 Correct 4 ms 13028 KB Output is correct
59 Correct 4 ms 13144 KB Output is correct
60 Correct 4 ms 13032 KB Output is correct
61 Correct 4 ms 13148 KB Output is correct
62 Correct 4 ms 13032 KB Output is correct
63 Correct 4 ms 13144 KB Output is correct
64 Correct 4 ms 13144 KB Output is correct
65 Correct 4 ms 13148 KB Output is correct
66 Correct 4 ms 13148 KB Output is correct
67 Correct 84 ms 26760 KB Output is correct
68 Correct 75 ms 26044 KB Output is correct
69 Correct 83 ms 28580 KB Output is correct
70 Correct 90 ms 28444 KB Output is correct
71 Correct 86 ms 28592 KB Output is correct
72 Correct 88 ms 27324 KB Output is correct
73 Correct 82 ms 30396 KB Output is correct
74 Correct 70 ms 24728 KB Output is correct
75 Correct 76 ms 26836 KB Output is correct
76 Correct 81 ms 25788 KB Output is correct
77 Correct 78 ms 26856 KB Output is correct
78 Correct 78 ms 26064 KB Output is correct
79 Correct 82 ms 26944 KB Output is correct
80 Correct 58 ms 26304 KB Output is correct
81 Correct 103 ms 29888 KB Output is correct
82 Correct 102 ms 29652 KB Output is correct
83 Correct 80 ms 26908 KB Output is correct
84 Correct 72 ms 26044 KB Output is correct
85 Correct 115 ms 29320 KB Output is correct
86 Correct 77 ms 27060 KB Output is correct
87 Correct 87 ms 27612 KB Output is correct
88 Correct 79 ms 25564 KB Output is correct
89 Correct 83 ms 25912 KB Output is correct
90 Correct 104 ms 27068 KB Output is correct
91 Correct 98 ms 27584 KB Output is correct
92 Correct 113 ms 28436 KB Output is correct
93 Correct 99 ms 29804 KB Output is correct
94 Correct 95 ms 27884 KB Output is correct
95 Correct 79 ms 27064 KB Output is correct
96 Correct 69 ms 25280 KB Output is correct
97 Correct 66 ms 21184 KB Output is correct
98 Correct 96 ms 29812 KB Output is correct
99 Correct 83 ms 26304 KB Output is correct
100 Correct 48 ms 16864 KB Output is correct
101 Correct 136 ms 27840 KB Output is correct
102 Correct 114 ms 25532 KB Output is correct
103 Correct 99 ms 24764 KB Output is correct
104 Correct 119 ms 27072 KB Output is correct