oj.uz

답안 #960729

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
960729 2024-04-11T01:30:34 Z pcc Election Campaign (JOI15_election_campaign) C++17
100 / 100
 118 ms 31648 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define ll long long
#define pll pair<ll,ll>
#define pii pair<int,int>
#define fs first
#define sc second
#define tlll tuple<ll,ll,ll>
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,popcnt,sse4")
 
const int mxn = 1e5+10;
int N,Q,rt;
 
vector<int> tree[mxn];
vector<pair<pii,int>> req[mxn];
 
inline char readchar() {
	const int S = 1<<20; // buffer size
	static char buf[S], *p = buf, *q = buf;
	if(p == q && (q = (p=buf)+fread(buf,1,S,stdin)) == buf) return EOF;
	return *p++;
}
 
inline int nextint() {
	int x = 0, c = readchar(), neg = false;
	while(('0' > c || c > '9') && c!='-' && c!=EOF) c = readchar();
	if(c == '-') neg = true, c = getchar();
	while('0' <= c && c <= '9') x = x*10 + (c^'0'), c = readchar();
	if(neg) x = -x;
	return x; // returns 0 if EOF
}
 
namespace HLD{
	int idx[mxn],link_top[mxn],par[mxn],dep[mxn],bs[mxn],sz[mxn];
	ll bit[mxn];
	void modify(int p,ll v){
		for(;p<mxn;p+=p&-p)bit[p] += v;
		return;
	}
	ll getval(int s,int e){
		int re = 0;
		for(;e>0;e-= e&-e)re += bit[e];
		s--;
		for(;s>0;s-= s&-s)re -= bit[s];
		return re;
	}
	int cnt = 0;
	void dfs1(int now){
		sz[now] = 1;
		for(auto nxt:tree[now]){
			if(nxt == par[now])continue;
			par[nxt] = now;
			dep[nxt] = dep[now]+1;
			dfs1(nxt);
          	sz[now] += sz[nxt];
			if(!bs[now]||sz[bs[now]]<sz[nxt])bs[now] = nxt;
		}
		return;
	}
	void dfs2(int now,int top){
		idx[now] = ++cnt;
		link_top[now] = top;
		if(bs[now])dfs2(bs[now],top);
		for(auto nxt:tree[now]){
			if(nxt == par[now]||nxt == bs[now])continue;
			dfs2(nxt,nxt);
		}
		return;
	}
	pll LCA(int a,int b){
		pll re = pll(0,0);
		int ta = link_top[a],tb = link_top[b];
		while(ta != tb){
			if(dep[ta]<dep[tb]){
				swap(a,b);
				swap(ta,tb);
			}
			re.sc += getval(idx[ta],idx[a]);
			a = par[ta];ta = link_top[a];
		}
		if(idx[a]>idx[b])swap(a,b);
		re.sc += getval(idx[a],idx[b]);
		re.fs = a;
		return re;
	}
}
 
namespace CALC{
	ll ans = 0;
	ll sum[mxn],dp[mxn];
	void dfs(int now){
		for(auto nxt:tree[now]){
			if(nxt == HLD::par[now])continue;
			dfs(nxt);
			sum[now] += dp[nxt];
		}
		dp[now] = max(dp[now],sum[now]);
		for(auto &i:req[now]){
			auto [a,b] = i.fs;
			int w = i.sc;
			ll ts = sum[now]+HLD::LCA(a,b).sc+w;
			dp[now] = max(dp[now],ts);
		}
		HLD::modify(HLD::idx[now],sum[now]-dp[now]);
	}
	void GO(){
		dfs(rt);
		printf("%d\n",dp[rt]);
		return;
	}
}
 
int main(){
	N = nextint();
	for(int i = 1;i<N;i++){
		int a,b;
		a = nextint(),b = nextint();
		tree[a].push_back(b);
		tree[b].push_back(a);
	}
  rt = (N+1)>>1;
	HLD::dfs1(rt);
	HLD::dfs2(rt,rt);
	Q = nextint();
	while(Q--){
		int a,b,c;
		a = nextint();b = nextint();c = nextint();
		int h = HLD::LCA(a,b).fs;
		req[h].push_back(make_pair(pii(a,b),c));
	}
	CALC::GO();
}

Compilation message

election_campaign.cpp: In function 'void CALC::GO()':
election_campaign.cpp:110:12: warning: format '%d' expects argument of type 'int', but argument 2 has type 'long long int' [-Wformat=]
  110 |   printf("%d\n",dp[rt]);
      |           ~^    ~~~~~~
      |            |         |
      |            int       long long int
      |           %lld

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 7512 KB Output is correct
2 Correct 2 ms 7516 KB Output is correct
3 Correct 2 ms 7516 KB Output is correct
4 Correct 2 ms 7512 KB Output is correct
5 Correct 34 ms 14116 KB Output is correct
6 Correct 26 ms 26460 KB Output is correct
7 Correct 39 ms 26460 KB Output is correct
8 Correct 22 ms 13656 KB Output is correct
9 Correct 51 ms 26708 KB Output is correct
10 Correct 22 ms 13660 KB Output is correct

Subtask #2
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 7516 KB Output is correct
2 Correct 2 ms 7516 KB Output is correct
3 Correct 2 ms 7772 KB Output is correct
4 Correct 49 ms 28400 KB Output is correct
5 Correct 55 ms 28320 KB Output is correct
6 Correct 42 ms 28500 KB Output is correct
7 Correct 48 ms 28464 KB Output is correct
8 Correct 45 ms 28496 KB Output is correct
9 Correct 42 ms 28496 KB Output is correct
10 Correct 51 ms 28500 KB Output is correct

Subtask #3
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 7516 KB Output is correct
2 Correct 2 ms 7516 KB Output is correct
3 Correct 2 ms 7772 KB Output is correct
4 Correct 49 ms 28400 KB Output is correct
5 Correct 55 ms 28320 KB Output is correct
6 Correct 42 ms 28500 KB Output is correct
7 Correct 48 ms 28464 KB Output is correct
8 Correct 45 ms 28496 KB Output is correct
9 Correct 42 ms 28496 KB Output is correct
10 Correct 51 ms 28500 KB Output is correct
11 Correct 4 ms 8536 KB Output is correct
12 Correct 43 ms 28508 KB Output is correct
13 Correct 48 ms 28324 KB Output is correct
14 Correct 50 ms 28496 KB Output is correct
15 Correct 48 ms 28392 KB Output is correct
16 Correct 43 ms 28496 KB Output is correct
17 Correct 47 ms 28500 KB Output is correct
18 Correct 44 ms 28312 KB Output is correct
19 Correct 43 ms 28500 KB Output is correct
20 Correct 44 ms 28284 KB Output is correct

Subtask #4
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 107 ms 15624 KB Output is correct
2 Correct 44 ms 28500 KB Output is correct
3 Correct 82 ms 25080 KB Output is correct
4 Correct 59 ms 15016 KB Output is correct
5 Correct 75 ms 31648 KB Output is correct
6 Correct 53 ms 15440 KB Output is correct
7 Correct 69 ms 31492 KB Output is correct
8 Correct 74 ms 15700 KB Output is correct
9 Correct 43 ms 28496 KB Output is correct
10 Correct 72 ms 31132 KB Output is correct

Subtask #5
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 7512 KB Output is correct
2 Correct 2 ms 7516 KB Output is correct
3 Correct 2 ms 7516 KB Output is correct
4 Correct 2 ms 7512 KB Output is correct
5 Correct 34 ms 14116 KB Output is correct
6 Correct 26 ms 26460 KB Output is correct
7 Correct 39 ms 26460 KB Output is correct
8 Correct 22 ms 13656 KB Output is correct
9 Correct 51 ms 26708 KB Output is correct
10 Correct 22 ms 13660 KB Output is correct
11 Correct 2 ms 7512 KB Output is correct
12 Correct 2 ms 7772 KB Output is correct
13 Correct 2 ms 7772 KB Output is correct
14 Correct 2 ms 7516 KB Output is correct
15 Correct 2 ms 7516 KB Output is correct
16 Correct 2 ms 7772 KB Output is correct
17 Correct 3 ms 7516 KB Output is correct
18 Correct 2 ms 7772 KB Output is correct
19 Correct 3 ms 7512 KB Output is correct
20 Correct 2 ms 7772 KB Output is correct

Subtask #6
40.0 / 40.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 7512 KB Output is correct
2 Correct 2 ms 7516 KB Output is correct
3 Correct 2 ms 7516 KB Output is correct
4 Correct 2 ms 7512 KB Output is correct
5 Correct 34 ms 14116 KB Output is correct
6 Correct 26 ms 26460 KB Output is correct
7 Correct 39 ms 26460 KB Output is correct
8 Correct 22 ms 13656 KB Output is correct
9 Correct 51 ms 26708 KB Output is correct
10 Correct 22 ms 13660 KB Output is correct
11 Correct 2 ms 7516 KB Output is correct
12 Correct 2 ms 7516 KB Output is correct
13 Correct 2 ms 7772 KB Output is correct
14 Correct 49 ms 28400 KB Output is correct
15 Correct 55 ms 28320 KB Output is correct
16 Correct 42 ms 28500 KB Output is correct
17 Correct 48 ms 28464 KB Output is correct
18 Correct 45 ms 28496 KB Output is correct
19 Correct 42 ms 28496 KB Output is correct
20 Correct 51 ms 28500 KB Output is correct
21 Correct 4 ms 8536 KB Output is correct
22 Correct 43 ms 28508 KB Output is correct
23 Correct 48 ms 28324 KB Output is correct
24 Correct 50 ms 28496 KB Output is correct
25 Correct 48 ms 28392 KB Output is correct
26 Correct 43 ms 28496 KB Output is correct
27 Correct 47 ms 28500 KB Output is correct
28 Correct 44 ms 28312 KB Output is correct
29 Correct 43 ms 28500 KB Output is correct
30 Correct 44 ms 28284 KB Output is correct
31 Correct 107 ms 15624 KB Output is correct
32 Correct 44 ms 28500 KB Output is correct
33 Correct 82 ms 25080 KB Output is correct
34 Correct 59 ms 15016 KB Output is correct
35 Correct 75 ms 31648 KB Output is correct
36 Correct 53 ms 15440 KB Output is correct
37 Correct 69 ms 31492 KB Output is correct
38 Correct 74 ms 15700 KB Output is correct
39 Correct 43 ms 28496 KB Output is correct
40 Correct 72 ms 31132 KB Output is correct
41 Correct 2 ms 7512 KB Output is correct
42 Correct 2 ms 7772 KB Output is correct
43 Correct 2 ms 7772 KB Output is correct
44 Correct 2 ms 7516 KB Output is correct
45 Correct 2 ms 7516 KB Output is correct
46 Correct 2 ms 7772 KB Output is correct
47 Correct 3 ms 7516 KB Output is correct
48 Correct 2 ms 7772 KB Output is correct
49 Correct 3 ms 7512 KB Output is correct
50 Correct 2 ms 7772 KB Output is correct
51 Correct 72 ms 15696 KB Output is correct
52 Correct 44 ms 28496 KB Output is correct
53 Correct 81 ms 26588 KB Output is correct
54 Correct 40 ms 15060 KB Output is correct
55 Correct 111 ms 15644 KB Output is correct
56 Correct 42 ms 28396 KB Output is correct
57 Correct 81 ms 25596 KB Output is correct
58 Correct 43 ms 15112 KB Output is correct
59 Correct 69 ms 15700 KB Output is correct
60 Correct 44 ms 28508 KB Output is correct
61 Correct 71 ms 29188 KB Output is correct
62 Correct 53 ms 15356 KB Output is correct
63 Correct 104 ms 15404 KB Output is correct
64 Correct 41 ms 28500 KB Output is correct
65 Correct 68 ms 24072 KB Output is correct
66 Correct 40 ms 15332 KB Output is correct
67 Correct 118 ms 15440 KB Output is correct
68 Correct 42 ms 28244 KB Output is correct
69 Correct 66 ms 28644 KB Output is correct
70 Correct 64 ms 14884 KB Output is correct