답안 #1066617

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1066617	2024-08-20T03:22:39 Z	Math4Life2020	Fireworks (APIO16_fireworks)	C++17	100 / 100	298 ms	60608 KB

fireworks

#include <bits/stdc++.h>
#pragma GCC optimize("O3")
using namespace std;
using ll = long long; using pii = pair<ll,ll>;
struct plf { //piecewise linear function
	ll m; //slope at 0
	ll b; //value at 0
	ll sz; //size
	multiset<ll> flip; //add a ReLU, vertext at that poitn
	void fuse(plf x0) {
		sz += x0.sz;
		m += x0.m;
		b += x0.b;
		for (ll x: x0.flip) {
			flip.insert(x);
		}
	}
	void backerase(ll n) {
		for (ll i=0;i<n;i++) {
			flip.erase(--flip.end());
		}
	}
	void wipe() {
		flip.clear();
	}
	ll gmin() {
		ll mv = m; ll bv = b;
		ll ans = b;
		for (ll x: flip) {
			mv += 1; bv -= x;
			ans = min(ans,mv*x+bv);
		}
		return ans;
	}
	void ext(ll L) { //add segment of length L up front
		sz++; b += L;
		auto A = --flip.end(); auto B = A; B--;
		ll x,y; x = *A; y = *B;
		flip.erase(A); flip.erase(B);
		flip.insert(x+L); flip.insert(y+L);
	}
};
plf junct(ll L) {
	plf x0;
	x0.m=-1;
	x0.b=L;
	x0.sz=1;
	x0.flip.insert(L); x0.flip.insert(L);
	return x0;
}
int main() {
	ios_base::sync_with_stdio(false); cin.tie(0);
	ll N,M; cin >> N >> M;
	ll radj[N+M]; ll c[N+M];
	vector<ll> fadj[N];
	plf x0[M]; //element i corresponds to vertex N+i
	radj[0]=-1; c[0]=0;
	ll madd[M+N];
	for (ll i=1;i<(N+M);i++) {
		cin >> radj[i]; radj[i]--;
		fadj[radj[i]].push_back(i);
		cin >> c[i];
	}
	for (ll i=0;i<M;i++) {
		x0[i]=junct(c[i+N]);
		madd[N+i]=i;
	}
	for (ll i=(N-1);i>=0;i--) {
		ll maxv = -1; ll xc = -1;
		for (ll x: fadj[i]) {
			if (x0[madd[x]].sz>maxv) {
				maxv = x0[madd[x]].sz;
				xc = x;
			}
		}
		madd[i]=madd[xc];
		for (ll x: fadj[i]) {
			if (x != xc) {
				x0[madd[i]].fuse(x0[madd[x]]);
				x0[madd[x]].wipe();
			}
		}
		x0[madd[i]].backerase(fadj[i].size()-1);
		if (i != 0) {
			x0[madd[i]].ext(c[i]);
		} else {
			cout << x0[madd[i]].gmin();
		}
	}
}

Subtask #1
7.0 / 7.0

#	결과	메모리	Grader output
1	Correct	344 KB	Output is correct
2	Correct	348 KB	Output is correct
3	Correct	348 KB	Output is correct
4	Correct	348 KB	Output is correct
5	Correct	348 KB	Output is correct
6	Correct	344 KB	Output is correct
7	Correct	348 KB	Output is correct
8	Correct	348 KB	Output is correct
9	Correct	348 KB	Output is correct
10	Correct	348 KB	Output is correct

Subtask #2
19.0 / 19.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	344 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	1 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	1 ms	348 KB	Output is correct
12	Correct	0 ms	424 KB	Output is correct
13	Correct	1 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct

Subtask #3
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	344 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	0 ms	424 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1 ms	604 KB	Output is correct
33	Correct	1 ms	604 KB	Output is correct
34	Correct	1 ms	620 KB	Output is correct
35	Correct	2 ms	860 KB	Output is correct
36	Correct	2 ms	860 KB	Output is correct
37	Correct	4 ms	860 KB	Output is correct
38	Correct	2 ms	1060 KB	Output is correct
39	Correct	2 ms	860 KB	Output is correct
40	Correct	1 ms	604 KB	Output is correct
41	Correct	2 ms	604 KB	Output is correct
42	Correct	2 ms	604 KB	Output is correct
43	Correct	2 ms	1116 KB	Output is correct
44	Correct	2 ms	1116 KB	Output is correct
45	Correct	2 ms	1116 KB	Output is correct
46	Correct	3 ms	1372 KB	Output is correct
47	Correct	3 ms	1444 KB	Output is correct
48	Correct	3 ms	1112 KB	Output is correct
49	Correct	3 ms	1368 KB	Output is correct
50	Correct	2 ms	1116 KB	Output is correct
51	Correct	2 ms	1116 KB	Output is correct
52	Correct	2 ms	1320 KB	Output is correct
53	Correct	3 ms	1116 KB	Output is correct
54	Correct	3 ms	1372 KB	Output is correct

Subtask #4
45.0 / 45.0

#	결과	실행 시간	메모리	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	344 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	0 ms	344 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	1 ms	348 KB	Output is correct
16	Correct	1 ms	348 KB	Output is correct
17	Correct	1 ms	348 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	1 ms	348 KB	Output is correct
22	Correct	0 ms	424 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct
26	Correct	1 ms	348 KB	Output is correct
27	Correct	0 ms	348 KB	Output is correct
28	Correct	0 ms	348 KB	Output is correct
29	Correct	0 ms	348 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	1 ms	348 KB	Output is correct
32	Correct	1 ms	604 KB	Output is correct
33	Correct	1 ms	604 KB	Output is correct
34	Correct	1 ms	620 KB	Output is correct
35	Correct	2 ms	860 KB	Output is correct
36	Correct	2 ms	860 KB	Output is correct
37	Correct	4 ms	860 KB	Output is correct
38	Correct	2 ms	1060 KB	Output is correct
39	Correct	2 ms	860 KB	Output is correct
40	Correct	1 ms	604 KB	Output is correct
41	Correct	2 ms	604 KB	Output is correct
42	Correct	2 ms	604 KB	Output is correct
43	Correct	2 ms	1116 KB	Output is correct
44	Correct	2 ms	1116 KB	Output is correct
45	Correct	2 ms	1116 KB	Output is correct
46	Correct	3 ms	1372 KB	Output is correct
47	Correct	3 ms	1444 KB	Output is correct
48	Correct	3 ms	1112 KB	Output is correct
49	Correct	3 ms	1368 KB	Output is correct
50	Correct	2 ms	1116 KB	Output is correct
51	Correct	2 ms	1116 KB	Output is correct
52	Correct	2 ms	1320 KB	Output is correct
53	Correct	3 ms	1116 KB	Output is correct
54	Correct	3 ms	1372 KB	Output is correct
55	Correct	6 ms	1884 KB	Output is correct
56	Correct	24 ms	6144 KB	Output is correct
57	Correct	47 ms	10388 KB	Output is correct
58	Correct	58 ms	13148 KB	Output is correct
59	Correct	81 ms	17604 KB	Output is correct
60	Correct	105 ms	21588 KB	Output is correct
61	Correct	121 ms	24436 KB	Output is correct
62	Correct	135 ms	27252 KB	Output is correct
63	Correct	183 ms	32340 KB	Output is correct
64	Correct	235 ms	34012 KB	Output is correct
65	Correct	77 ms	23892 KB	Output is correct
66	Correct	64 ms	23884 KB	Output is correct
67	Correct	62 ms	23888 KB	Output is correct
68	Correct	131 ms	40272 KB	Output is correct
69	Correct	153 ms	41604 KB	Output is correct
70	Correct	152 ms	41240 KB	Output is correct
71	Correct	298 ms	59728 KB	Output is correct
72	Correct	287 ms	59728 KB	Output is correct
73	Correct	275 ms	59728 KB	Output is correct
74	Correct	259 ms	59732 KB	Output is correct
75	Correct	279 ms	58960 KB	Output is correct
76	Correct	243 ms	59332 KB	Output is correct
77	Correct	247 ms	57664 KB	Output is correct
78	Correct	251 ms	57712 KB	Output is correct
79	Correct	257 ms	60608 KB	Output is correct

답안 #1066617

Compilation message

Subtask #1 7.0 / 7.0

Subtask #2 19.0 / 19.0

Subtask #3 29.0 / 29.0

Subtask #4 45.0 / 45.0

Subtask #1
7.0 / 7.0

Subtask #2
19.0 / 19.0

Subtask #3
29.0 / 29.0

Subtask #4
45.0 / 45.0