Submission #701368

# Submission time Handle Problem Language Result Execution time Memory
701368 2023-02-21T04:28:13 Z GusterGoose27 Arranging Tickets (JOI17_arranging_tickets) C++11
100 / 100
2349 ms 17080 KB
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

const int MAXN = 2e5+10;
int n, m;
ll overall[MAXN];
ll arr[MAXN];
ll req_red[MAXN];
ll r_end[MAXN];
vector<pii> ranges[MAXN]; // right endpoint, index

ll max(ll a, ll b) {
	if (a > b) return a;
	return b;
}

ll num_req(ll target) {
	for (int i = 0; i < n; i++) req_red[i] = max(0, arr[i]-target);
	fill(r_end, r_end+n, 0);
	priority_queue<pii> pq;
	ll sub = 0;
	ll num = 0;
	for (pii i: ranges[0]) pq.push(i);
	for (int i = 0; i < n; i++) {
		if (sub < req_red[i]) {
			pii r = pq.top();
			pq.pop();
			ll amt;
			if (r.second > req_red[i]-sub) {
				r.second -= (req_red[i]-sub);
				amt = (req_red[i]-sub);
				pq.push(r);
			}
			else amt = r.second;
			r_end[r.first] += amt;
			sub += amt;
			i--;
			num += amt;
			continue;
		}
		for (pii v: ranges[i+1]) pq.push(v);
		sub -= r_end[i];
	}
	return num;
}

ll solve() {
	ll mn = -1;
	ll mx = 0;
	for (int i = 0; i < n; i++) mx = max(mx, arr[i]);
	mx++;
	// int b = -1;
	// for (int i = mn+1; i < mx; i++) {
	// 	int v = 2*i+num_req(i);
	// 	if (b == -1 || v < b) b = v;
	// }
	// return b;
	while (mx > mn+2) {
		ll cur = (mn+mx)/2;
		ll v1 = num_req(cur);
		ll v2 = num_req(cur+1);
		if (v1 >= v2+2) mn = cur;
		else mx = cur+1;
	}
	return 2*(mn+1)+num_req(mn+1);
}

int main() {
	ios_base::sync_with_stdio(false); cin.tie(NULL);
	cin >> n >> m;
	n--;
	for (int i = 0; i < m; i++) {
		int a, b, c; cin >> a >> b >> c;
		a--; b--;
		if (a > b) swap(a, b);
		ranges[a].push_back(pii(b-1, c));
		overall[a] += c;
		overall[b] -= c;
	}
	for (int i = 0; i < n; i++) {
		overall[i+1] += overall[i];
	}
	for (int i = 0; i < n; i++) {
		arr[i] = (overall[i]+1)/2;
	}
	ll ans = solve();
	for (int i = 0; i < n; i++) arr[i] = overall[i]/2;
	ans = min(ans, solve()+1);
	cout << ans << "\n";
}
# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5008 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5064 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4956 KB Output is correct
23 Correct 3 ms 5064 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 4 ms 4948 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5008 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5064 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4956 KB Output is correct
23 Correct 3 ms 5064 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 4 ms 4948 KB Output is correct
28 Correct 10 ms 5204 KB Output is correct
29 Correct 10 ms 5204 KB Output is correct
30 Correct 10 ms 5252 KB Output is correct
31 Correct 10 ms 5256 KB Output is correct
32 Correct 11 ms 5232 KB Output is correct
33 Correct 10 ms 5256 KB Output is correct
34 Correct 10 ms 5204 KB Output is correct
35 Correct 10 ms 5256 KB Output is correct
36 Correct 10 ms 5204 KB Output is correct
37 Correct 9 ms 5204 KB Output is correct
38 Correct 6 ms 5304 KB Output is correct
39 Correct 6 ms 5284 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5008 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5064 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4956 KB Output is correct
23 Correct 3 ms 5064 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 4 ms 4948 KB Output is correct
28 Correct 10 ms 5204 KB Output is correct
29 Correct 10 ms 5204 KB Output is correct
30 Correct 10 ms 5252 KB Output is correct
31 Correct 10 ms 5256 KB Output is correct
32 Correct 11 ms 5232 KB Output is correct
33 Correct 10 ms 5256 KB Output is correct
34 Correct 10 ms 5204 KB Output is correct
35 Correct 10 ms 5256 KB Output is correct
36 Correct 10 ms 5204 KB Output is correct
37 Correct 9 ms 5204 KB Output is correct
38 Correct 6 ms 5304 KB Output is correct
39 Correct 6 ms 5284 KB Output is correct
40 Correct 547 ms 15060 KB Output is correct
41 Correct 552 ms 15116 KB Output is correct
42 Correct 527 ms 14892 KB Output is correct
43 Correct 526 ms 14908 KB Output is correct
44 Correct 516 ms 14976 KB Output is correct
45 Correct 489 ms 14804 KB Output is correct
46 Correct 504 ms 14756 KB Output is correct
47 Correct 515 ms 14920 KB Output is correct
48 Correct 495 ms 14736 KB Output is correct
49 Correct 373 ms 11872 KB Output is correct
50 Correct 285 ms 12872 KB Output is correct
51 Correct 380 ms 12068 KB Output is correct
# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 3 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 3 ms 4948 KB Output is correct
6 Correct 2 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 2 ms 4948 KB Output is correct
11 Correct 2 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 2 ms 4948 KB Output is correct
14 Correct 2 ms 4948 KB Output is correct
15 Correct 3 ms 4948 KB Output is correct
16 Correct 3 ms 5008 KB Output is correct
17 Correct 3 ms 4948 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 5064 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4956 KB Output is correct
23 Correct 3 ms 5064 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 3 ms 4948 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 4 ms 4948 KB Output is correct
28 Correct 10 ms 5204 KB Output is correct
29 Correct 10 ms 5204 KB Output is correct
30 Correct 10 ms 5252 KB Output is correct
31 Correct 10 ms 5256 KB Output is correct
32 Correct 11 ms 5232 KB Output is correct
33 Correct 10 ms 5256 KB Output is correct
34 Correct 10 ms 5204 KB Output is correct
35 Correct 10 ms 5256 KB Output is correct
36 Correct 10 ms 5204 KB Output is correct
37 Correct 9 ms 5204 KB Output is correct
38 Correct 6 ms 5304 KB Output is correct
39 Correct 6 ms 5284 KB Output is correct
40 Correct 547 ms 15060 KB Output is correct
41 Correct 552 ms 15116 KB Output is correct
42 Correct 527 ms 14892 KB Output is correct
43 Correct 526 ms 14908 KB Output is correct
44 Correct 516 ms 14976 KB Output is correct
45 Correct 489 ms 14804 KB Output is correct
46 Correct 504 ms 14756 KB Output is correct
47 Correct 515 ms 14920 KB Output is correct
48 Correct 495 ms 14736 KB Output is correct
49 Correct 373 ms 11872 KB Output is correct
50 Correct 285 ms 12872 KB Output is correct
51 Correct 380 ms 12068 KB Output is correct
52 Correct 2349 ms 15392 KB Output is correct
53 Correct 2060 ms 14936 KB Output is correct
54 Correct 2205 ms 15112 KB Output is correct
55 Correct 2155 ms 14956 KB Output is correct
56 Correct 1940 ms 17080 KB Output is correct
57 Correct 2048 ms 16856 KB Output is correct
58 Correct 2181 ms 16988 KB Output is correct
59 Correct 1106 ms 13596 KB Output is correct