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Submission #583944

# Submission time Handle Problem Language Result Execution time Memory
583944 2022-06-26T14:17:08 Z cheissmart Stranded Far From Home (BOI22_island) C++14
100 / 100
 478 ms 50820 KB 
#include <bits/stdc++.h>
#define IO_OP ios::sync_with_stdio(0), cin.tie(0)
#define F first
#define S second
#define V vector
#define PB push_back
#define EB emplace_back
#define MP make_pair
#define SZ(v) int((v).size())
#define ALL(v) (v).begin(), (v).end()

using namespace std;

typedef long long ll;
typedef pair<int, int> pi;
typedef V<int> vi;

const int INF = 1e9 + 7, N = 2e5 + 7;

int s[N], where[N], ans[N], pos[N];
ll sum[N];
vi who[N], alive[N];
vi G[N];

signed main()
{
	IO_OP;

	int n, m;
	cin >> n >> m;
	for(int i = 1; i <= n; i++)
		cin >> s[i];

	vi p(n);
	iota(ALL(p), 1);
	sort(ALL(p), [&] (int a, int b) {
		return s[a] < s[b];
	});
	for(int i = 0; i < n; i++)
		pos[p[i]] = i;

	for(int i = 0; i < m; i++) {
		int u, v;
		cin >> u >> v;
		G[u].PB(v);
		G[v].PB(u);
	}

	auto unite = [&] (int x, int y) {
		if(SZ(who[x]) > SZ(who[y])) swap(x, y);
		for(int u:who[x]) {
			who[y].PB(u);
			where[u] = y;
		}
		sum[y] += sum[x];
		if(SZ(alive[x]) > SZ(alive[y]))
			swap(alive[x], alive[y]);
		for(int u:alive[x])
			alive[y].PB(u);
	};

	for(int u:p) {
		ans[u] = 1;
		where[u] = u, who[u].PB(u), alive[u].PB(u), sum[u] = s[u];

		vi cc;
		for(int v:G[u]) if(pos[v] < pos[u])
			cc.PB(where[v]);
		sort(ALL(cc));
		cc.resize(unique(ALL(cc)) - cc.begin());

		for(int c:cc) if(sum[c] < s[u]) {
			for(int v:alive[c])
				ans[v] = 0;
			alive[c].clear();
		}

		for(int c:cc)
			unite(where[u], c);
	}

	for(int i = 1; i <= n; i++)
		cout << ans[i];
	cout << '\n';

}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 14436 KB Output is correct
2 Correct 10 ms 14400 KB Output is correct
3 Correct 9 ms 14420 KB Output is correct
4 Correct 13 ms 14696 KB Output is correct
5 Correct 12 ms 14628 KB Output is correct
6 Correct 10 ms 14572 KB Output is correct
7 Correct 10 ms 14660 KB Output is correct
8 Correct 9 ms 14548 KB Output is correct
9 Correct 10 ms 14676 KB Output is correct
10 Correct 11 ms 14676 KB Output is correct
11 Correct 10 ms 14732 KB Output is correct
12 Correct 9 ms 14648 KB Output is correct
13 Correct 10 ms 14676 KB Output is correct
14 Correct 10 ms 14732 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14420 KB Output is correct
2 Correct 9 ms 14420 KB Output is correct
3 Correct 219 ms 40568 KB Output is correct
4 Correct 191 ms 46276 KB Output is correct
5 Correct 297 ms 44688 KB Output is correct
6 Correct 276 ms 46500 KB Output is correct
7 Correct 308 ms 46096 KB Output is correct
8 Correct 242 ms 43244 KB Output is correct
9 Correct 207 ms 50816 KB Output is correct
10 Correct 173 ms 42384 KB Output is correct
11 Correct 161 ms 42928 KB Output is correct
12 Correct 286 ms 43732 KB Output is correct
13 Correct 241 ms 48476 KB Output is correct
14 Correct 189 ms 47528 KB Output is correct
15 Correct 187 ms 41164 KB Output is correct
16 Correct 114 ms 41252 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 14420 KB Output is correct
2 Correct 391 ms 48408 KB Output is correct
3 Correct 342 ms 48176 KB Output is correct
4 Correct 224 ms 48732 KB Output is correct
5 Correct 191 ms 48564 KB Output is correct
6 Correct 371 ms 49208 KB Output is correct
7 Correct 190 ms 41448 KB Output is correct
8 Correct 186 ms 41444 KB Output is correct
9 Correct 131 ms 41204 KB Output is correct
10 Correct 245 ms 45888 KB Output is correct
11 Correct 285 ms 47384 KB Output is correct

Subtask #4
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 14420 KB Output is correct
2 Correct 406 ms 42592 KB Output is correct
3 Correct 453 ms 44604 KB Output is correct
4 Correct 411 ms 45668 KB Output is correct
5 Correct 322 ms 46436 KB Output is correct
6 Correct 243 ms 42344 KB Output is correct
7 Correct 215 ms 42164 KB Output is correct
8 Correct 185 ms 44532 KB Output is correct
9 Correct 188 ms 30088 KB Output is correct
10 Correct 326 ms 47844 KB Output is correct
11 Correct 308 ms 47468 KB Output is correct

Subtask #5
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 14436 KB Output is correct
2 Correct 10 ms 14400 KB Output is correct
3 Correct 9 ms 14420 KB Output is correct
4 Correct 13 ms 14696 KB Output is correct
5 Correct 12 ms 14628 KB Output is correct
6 Correct 10 ms 14572 KB Output is correct
7 Correct 10 ms 14660 KB Output is correct
8 Correct 9 ms 14548 KB Output is correct
9 Correct 10 ms 14676 KB Output is correct
10 Correct 11 ms 14676 KB Output is correct
11 Correct 10 ms 14732 KB Output is correct
12 Correct 9 ms 14648 KB Output is correct
13 Correct 10 ms 14676 KB Output is correct
14 Correct 10 ms 14732 KB Output is correct
15 Correct 9 ms 14420 KB Output is correct
16 Correct 9 ms 14420 KB Output is correct
17 Correct 219 ms 40568 KB Output is correct
18 Correct 191 ms 46276 KB Output is correct
19 Correct 297 ms 44688 KB Output is correct
20 Correct 276 ms 46500 KB Output is correct
21 Correct 308 ms 46096 KB Output is correct
22 Correct 242 ms 43244 KB Output is correct
23 Correct 207 ms 50816 KB Output is correct
24 Correct 173 ms 42384 KB Output is correct
25 Correct 161 ms 42928 KB Output is correct
26 Correct 286 ms 43732 KB Output is correct
27 Correct 241 ms 48476 KB Output is correct
28 Correct 189 ms 47528 KB Output is correct
29 Correct 187 ms 41164 KB Output is correct
30 Correct 114 ms 41252 KB Output is correct
31 Correct 9 ms 14420 KB Output is correct
32 Correct 391 ms 48408 KB Output is correct
33 Correct 342 ms 48176 KB Output is correct
34 Correct 224 ms 48732 KB Output is correct
35 Correct 191 ms 48564 KB Output is correct
36 Correct 371 ms 49208 KB Output is correct
37 Correct 190 ms 41448 KB Output is correct
38 Correct 186 ms 41444 KB Output is correct
39 Correct 131 ms 41204 KB Output is correct
40 Correct 245 ms 45888 KB Output is correct
41 Correct 285 ms 47384 KB Output is correct
42 Correct 8 ms 14420 KB Output is correct
43 Correct 406 ms 42592 KB Output is correct
44 Correct 453 ms 44604 KB Output is correct
45 Correct 411 ms 45668 KB Output is correct
46 Correct 322 ms 46436 KB Output is correct
47 Correct 243 ms 42344 KB Output is correct
48 Correct 215 ms 42164 KB Output is correct
49 Correct 185 ms 44532 KB Output is correct
50 Correct 188 ms 30088 KB Output is correct
51 Correct 326 ms 47844 KB Output is correct
52 Correct 308 ms 47468 KB Output is correct
53 Correct 7 ms 14420 KB Output is correct
54 Correct 9 ms 14420 KB Output is correct
55 Correct 10 ms 14420 KB Output is correct
56 Correct 9 ms 14688 KB Output is correct
57 Correct 9 ms 14696 KB Output is correct
58 Correct 9 ms 14640 KB Output is correct
59 Correct 11 ms 14612 KB Output is correct
60 Correct 11 ms 14548 KB Output is correct
61 Correct 11 ms 14676 KB Output is correct
62 Correct 12 ms 14676 KB Output is correct
63 Correct 10 ms 14632 KB Output is correct
64 Correct 9 ms 14676 KB Output is correct
65 Correct 10 ms 14676 KB Output is correct
66 Correct 11 ms 14676 KB Output is correct
67 Correct 206 ms 41564 KB Output is correct
68 Correct 232 ms 47244 KB Output is correct
69 Correct 294 ms 45048 KB Output is correct
70 Correct 328 ms 46504 KB Output is correct
71 Correct 293 ms 45936 KB Output is correct
72 Correct 339 ms 43264 KB Output is correct
73 Correct 234 ms 50820 KB Output is correct
74 Correct 173 ms 42756 KB Output is correct
75 Correct 190 ms 43644 KB Output is correct
76 Correct 271 ms 43808 KB Output is correct
77 Correct 227 ms 48388 KB Output is correct
78 Correct 186 ms 47616 KB Output is correct
79 Correct 177 ms 41500 KB Output is correct
80 Correct 134 ms 41180 KB Output is correct
81 Correct 363 ms 49452 KB Output is correct
82 Correct 359 ms 49220 KB Output is correct
83 Correct 218 ms 47708 KB Output is correct
84 Correct 199 ms 48512 KB Output is correct
85 Correct 395 ms 49180 KB Output is correct
86 Correct 189 ms 41372 KB Output is correct
87 Correct 223 ms 41408 KB Output is correct
88 Correct 210 ms 45044 KB Output is correct
89 Correct 322 ms 46512 KB Output is correct
90 Correct 373 ms 42604 KB Output is correct
91 Correct 402 ms 44648 KB Output is correct
92 Correct 411 ms 46024 KB Output is correct
93 Correct 278 ms 46404 KB Output is correct
94 Correct 246 ms 42412 KB Output is correct
95 Correct 152 ms 42260 KB Output is correct
96 Correct 138 ms 44600 KB Output is correct
97 Correct 155 ms 29452 KB Output is correct
98 Correct 284 ms 46960 KB Output is correct
99 Correct 257 ms 47536 KB Output is correct
100 Correct 59 ms 17856 KB Output is correct
101 Correct 434 ms 45460 KB Output is correct
102 Correct 221 ms 36660 KB Output is correct
103 Correct 280 ms 36660 KB Output is correct
104 Correct 478 ms 41644 KB Output is correct