Submission #981855

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
981855	2024-05-13T15:47:53 Z	vjudge1	Swapping Cities (APIO20_swap)	C++17	37 / 100	2000 ms	35528 KB

swap

#include "swap.h"
#include <bits/stdc++.h>
#include <vector>
using namespace std;
long long n, m, i, j, sz[200001], p[200001], d[200001], mx[200001], szm[200001];
vector<pair<long long, long long>> g[200001];
vector<pair<long long, pair<long long, long long>>> gg;

long long get(long long x) {
	return x == p[x] ? x : p[x] = get(p[x]);
}

void merge(long long xx, long long yy) {
	long long x = get(xx), y = get(yy);
	mx[x] = max({mx[x], d[x], d[xx]});
	mx[y] = max({mx[y], d[y], d[yy]});
	mx[x] = max(mx[x], mx[y]);
	mx[y] = max(mx[y], mx[x]);
	szm[x]++;
	if (x == y) return;
	if (sz[x] < sz[y]) swap(x, y);
	p[y] = x;
	sz[x] += sz[y];
	szm[x] += szm[y];
	mx[x] = max(mx[x], mx[y]);
}

void init(int N, int M,
          std::vector<int> U, std::vector<int> V, std::vector<int> W) {
	n = N, m = M;
	for (long long i = 0; i < M; i++) {
		g[U[i]].push_back({V[i], W[i]});
		g[V[i]].push_back({U[i], W[i]});
		gg.push_back({W[i], {U[i], V[i]}});
	}
	sort(gg.begin(), gg.end());
}

bool check(long long md, long long x, long long y) {
	if (md < 0 || md >= gg.size()) return 0;
	for (long long i = 0; i < n; i++) sz[i] = 1, p[i] = i, d[i] = mx[i] = szm[i] = 0;
	for (long long i = 0; i <= md; i++) {
		d[gg[i].second.first]++;
		d[gg[i].second.second]++;
		merge(gg[i].second.first, gg[i].second.second);
	}
	if (get(x) != get(y)) return 0;
	if (mx[get(x)] <= 2 && szm[get(x)] < sz[get(x)]) return 0;
	return 1;
}

int getMinimumFuelCapacity(int X, int Y) {
	long long l = 0, r = (int)gg.size(), md, ans = 0;
	while (l <= r) {
		md = (l + r) / 2;
		if (check(md, X, Y)) ans = md, r = md - 1;
		else l = md + 1;
	}
	if (!check(ans, X, Y)) return -1;
  return gg[ans].first;
}

Compilation message

swap.cpp: In function 'bool check(long long int, long long int, long long int)':
swap.cpp:40:19: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, std::pair<long long int, long long int> > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   40 |  if (md < 0 || md >= gg.size()) return 0;
      |                ~~~^~~~~~~~~~~~

Subtask #1
0 / 6.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	12892 KB	Output is correct
2	Correct	2 ms	12892 KB	Output is correct
3	Correct	2 ms	12892 KB	Output is correct
4	Correct	3 ms	12892 KB	Output is correct
5	Correct	3 ms	13144 KB	Output is correct
6	Correct	3 ms	12904 KB	Output is correct
7	Correct	3 ms	13052 KB	Output is correct
8	Correct	3 ms	12888 KB	Output is correct
9	Correct	116 ms	21448 KB	Output is correct
10	Correct	236 ms	23364 KB	Output is correct
11	Correct	289 ms	23428 KB	Output is correct
12	Correct	290 ms	23796 KB	Output is correct
13	Correct	226 ms	24424 KB	Output is correct
14	Execution timed out	2082 ms	22888 KB	Time limit exceeded
15	Halted	0 ms	0 KB	-

Subtask #2
0 / 7.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	12892 KB	Output is correct
2	Correct	2 ms	12892 KB	Output is correct
3	Execution timed out	2029 ms	26764 KB	Time limit exceeded
4	Halted	0 ms	0 KB	-

Subtask #3
17.0 / 17.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	12892 KB	Output is correct
2	Correct	2 ms	12892 KB	Output is correct
3	Correct	2 ms	12892 KB	Output is correct
4	Correct	3 ms	12892 KB	Output is correct
5	Correct	3 ms	13144 KB	Output is correct
6	Correct	3 ms	12904 KB	Output is correct
7	Correct	3 ms	13052 KB	Output is correct
8	Correct	3 ms	12888 KB	Output is correct
9	Correct	3 ms	12888 KB	Output is correct
10	Correct	3 ms	12888 KB	Output is correct
11	Correct	3 ms	12892 KB	Output is correct
12	Correct	3 ms	12892 KB	Output is correct
13	Correct	3 ms	12892 KB	Output is correct
14	Correct	4 ms	12892 KB	Output is correct
15	Correct	3 ms	12892 KB	Output is correct
16	Correct	3 ms	12892 KB	Output is correct
17	Correct	3 ms	12892 KB	Output is correct
18	Correct	3 ms	12892 KB	Output is correct
19	Correct	3 ms	12892 KB	Output is correct
20	Correct	3 ms	12892 KB	Output is correct
21	Correct	3 ms	12892 KB	Output is correct
22	Correct	4 ms	12888 KB	Output is correct
23	Correct	3 ms	12892 KB	Output is correct
24	Correct	4 ms	12892 KB	Output is correct
25	Correct	4 ms	13148 KB	Output is correct
26	Correct	4 ms	13148 KB	Output is correct
27	Correct	3 ms	12892 KB	Output is correct
28	Correct	4 ms	13152 KB	Output is correct

Subtask #4
20.0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	12888 KB	Output is correct
2	Correct	2 ms	12892 KB	Output is correct
3	Correct	2 ms	12892 KB	Output is correct
4	Correct	2 ms	12892 KB	Output is correct
5	Correct	3 ms	12892 KB	Output is correct
6	Correct	3 ms	13144 KB	Output is correct
7	Correct	3 ms	12904 KB	Output is correct
8	Correct	3 ms	13052 KB	Output is correct
9	Correct	3 ms	12888 KB	Output is correct
10	Correct	116 ms	21448 KB	Output is correct
11	Correct	236 ms	23364 KB	Output is correct
12	Correct	289 ms	23428 KB	Output is correct
13	Correct	290 ms	23796 KB	Output is correct
14	Correct	226 ms	24424 KB	Output is correct
15	Correct	3 ms	12888 KB	Output is correct
16	Correct	3 ms	12892 KB	Output is correct
17	Correct	3 ms	12892 KB	Output is correct
18	Correct	3 ms	12892 KB	Output is correct
19	Correct	4 ms	12892 KB	Output is correct
20	Correct	3 ms	12892 KB	Output is correct
21	Correct	3 ms	12892 KB	Output is correct
22	Correct	3 ms	12892 KB	Output is correct
23	Correct	3 ms	12892 KB	Output is correct
24	Correct	3 ms	12892 KB	Output is correct
25	Correct	3 ms	12892 KB	Output is correct
26	Correct	3 ms	12892 KB	Output is correct
27	Correct	4 ms	12888 KB	Output is correct
28	Correct	3 ms	12892 KB	Output is correct
29	Correct	4 ms	12892 KB	Output is correct
30	Correct	4 ms	13148 KB	Output is correct
31	Correct	4 ms	13148 KB	Output is correct
32	Correct	3 ms	12892 KB	Output is correct
33	Correct	4 ms	13152 KB	Output is correct
34	Correct	12 ms	14484 KB	Output is correct
35	Correct	324 ms	23652 KB	Output is correct
36	Correct	342 ms	23400 KB	Output is correct
37	Correct	354 ms	23656 KB	Output is correct
38	Correct	339 ms	23356 KB	Output is correct
39	Correct	325 ms	23328 KB	Output is correct
40	Correct	294 ms	23264 KB	Output is correct
41	Correct	321 ms	23796 KB	Output is correct
42	Correct	337 ms	23720 KB	Output is correct
43	Correct	177 ms	23400 KB	Output is correct
44	Correct	345 ms	24276 KB	Output is correct
45	Correct	294 ms	29152 KB	Output is correct
46	Correct	353 ms	24420 KB	Output is correct
47	Correct	324 ms	23400 KB	Output is correct
48	Correct	304 ms	24712 KB	Output is correct
49	Correct	77 ms	32304 KB	Output is correct
50	Correct	76 ms	25940 KB	Output is correct
51	Correct	220 ms	26832 KB	Output is correct
52	Correct	370 ms	31124 KB	Output is correct
53	Correct	331 ms	33216 KB	Output is correct
54	Correct	419 ms	35528 KB	Output is correct
55	Correct	211 ms	23404 KB	Output is correct
56	Correct	414 ms	32536 KB	Output is correct

Subtask #5
0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	12892 KB	Output is correct
2	Correct	2 ms	12892 KB	Output is correct
3	Correct	2 ms	12892 KB	Output is correct
4	Correct	3 ms	12892 KB	Output is correct
5	Correct	3 ms	13144 KB	Output is correct
6	Correct	3 ms	12904 KB	Output is correct
7	Correct	3 ms	13052 KB	Output is correct
8	Correct	3 ms	12888 KB	Output is correct
9	Correct	116 ms	21448 KB	Output is correct
10	Correct	236 ms	23364 KB	Output is correct
11	Correct	289 ms	23428 KB	Output is correct
12	Correct	290 ms	23796 KB	Output is correct
13	Correct	226 ms	24424 KB	Output is correct
14	Execution timed out	2082 ms	22888 KB	Time limit exceeded
15	Halted	0 ms	0 KB	-

Subtask #6
0 / 27.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	12888 KB	Output is correct
2	Correct	2 ms	12892 KB	Output is correct
3	Correct	2 ms	12892 KB	Output is correct
4	Correct	2 ms	12892 KB	Output is correct
5	Correct	3 ms	12892 KB	Output is correct
6	Correct	3 ms	13144 KB	Output is correct
7	Correct	3 ms	12904 KB	Output is correct
8	Correct	3 ms	13052 KB	Output is correct
9	Correct	3 ms	12888 KB	Output is correct
10	Correct	116 ms	21448 KB	Output is correct
11	Correct	236 ms	23364 KB	Output is correct
12	Correct	289 ms	23428 KB	Output is correct
13	Correct	290 ms	23796 KB	Output is correct
14	Correct	226 ms	24424 KB	Output is correct
15	Execution timed out	2082 ms	22888 KB	Time limit exceeded
16	Halted	0 ms	0 KB	-

Submission #981855

Compilation message

Subtask #1 0 / 6.0

Subtask #2 0 / 7.0

Subtask #3 17.0 / 17.0

Subtask #4 20.0 / 20.0

Subtask #5 0 / 23.0

Subtask #6 0 / 27.0

Subtask #1
0 / 6.0

Subtask #2
0 / 7.0

Subtask #3
17.0 / 17.0

Subtask #4
20.0 / 20.0

Subtask #5
0 / 23.0

Subtask #6
0 / 27.0