oj.uz

답안 #495698

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
495698 2021-12-20T02:32:15 Z NhatMinh0208 Power Plant (JOI20_power) C++14
100 / 100
 172 ms 35132 KB 
#ifndef CPL_TEMPLATE
#define CPL_TEMPLATE
/*
	Normie's Template v2.5
	Changes:
    Added warning against using pragmas on USACO.
*/
// Standard library in one include.
#include <bits/stdc++.h>
using namespace std;
 
// ordered_set library.
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ordered_set(el) tree<el,null_type,less<el>,rb_tree_tag,tree_order_statistics_node_update>
 
// AtCoder library. (Comment out these two lines if you're not submitting in AtCoder.) (Or if you want to use it in other judges, run expander.py first.)
//#include <atcoder/all>
//using namespace atcoder;

//Pragmas (Comment out these three lines if you're submitting in szkopul or USACO.)

//File I/O.
#define FILE_IN "cseq.inp"
#define FILE_OUT "cseq.out"
#define ofile freopen(FILE_IN,"r",stdin);freopen(FILE_OUT,"w",stdout)
 
//Fast I/O.
#define fio ios::sync_with_stdio(0);cin.tie(0)
#define nfio cin.tie(0)
#define endl "\n"
 
//Order checking.
#define ord(a,b,c) ((a>=b)and(b>=c))
 
//min/max redefines, so i dont have to resolve annoying compile errors.
#define min(a,b) (((a)<(b))?(a):(b))
#define max(a,b) (((a)>(b))?(a):(b))

// Fast min/max assigns to use with AVX.
// Requires g++ 9.2.0.
template<typename T>
__attribute__((always_inline)) void chkmin(T& a, const T& b) {
    a=(a<b)?a:b;
}

template<typename T>
__attribute__((always_inline)) void chkmax(T& a, const T& b) {
    a=(a>b)?a:b;
}
 
//Constants.
#define MOD (ll(998244353))
#define MAX 300001
#define mag 320
const long double PI=3.14159265358979;
 
//Pairs and 3-pairs.
#define p1 first
#define p2 second.first
#define p3 second.second
#define fi first
#define se second
#define pii(element_type) pair<element_type,element_type>
#define piii(element_type) pair<element_type,pii(element_type)>
 
//Quick power of 2.
#define pow2(x) (ll(1)<<x)
 
//Short for-loops.
#define ff(i,__,___) for(int i=__;i<=___;i++)
#define rr(i,__,___) for(int i=__;i>=___;i--)
 
//Typedefs.
#define bi BigInt
typedef long long ll;
typedef long double ld;
typedef short sh;

// Binpow and stuff
ll BOW(ll a, ll x, ll p)
{
	if (!x) return 1;
	ll res=BOW(a,x/2,p);
	res*=res;
	res%=p;
	if (x%2) res*=a;
	return res%p;
}
ll INV(ll a, ll p)
{
	return BOW(a,p-2,p);
}
//---------END-------//
#endif
vector<int> gt[200001];
int n,m,i,j,k,t,t1,u,v,a,b;
int dp[200001][2];
string gen;
void calc(int x, int p) {
	int cur,a,b,c;
	vector<int> ch;
	for (auto g : gt[x]) if (g-p) {
		calc(g,x);
		ch.push_back(g);
	}
	if (gen[x]=='0') {
		cur=0; a=0; b=0;
		for (auto g : ch) {
			a+=dp[g][1];
			b=max(b,dp[g][0]);
		}
		dp[x][0]=max(a,b);
		dp[x][1]=a;
	}
	else {
		cur=1;
		dp[x][cur]=1;
		a=0; b=0;
		for (auto g : ch) {
			a+=dp[g][1];
			b=max(b,dp[g][1]);
		}
		dp[x][cur]=max(dp[x][cur],-1+a);
		// dp[x][cur]=max(dp[x][cur],b);

		cur=0;
		dp[x][cur]=-1e9;
		a=0; b=0; c=0;
		for (auto g : ch) {
			a+=dp[g][1];
			b=max(b,dp[g][0]);
			c=max(c,dp[g][1]);
		}
		dp[x][cur]=max(dp[x][cur],-1+a);
		dp[x][cur]=max(dp[x][cur],b);
		dp[x][cur]=max(dp[x][cur],c+1);
	}
	// cout<<"A\n";
	// cout<<x<<' '<<gen[x]<<' '<<dp[x][0]<<' '<<dp[x][1]<<endl;
	// for (auto g : ch) cout<<g<<' '; 
	// cout<<endl;
}
int main()
{
	fio;
	cin>>n;
	for (i=1;i<n;i++) {
		cin>>a>>b; a--; b--;
		gt[a].push_back(b);
		gt[b].push_back(a);
	}
	cin>>gen;
	calc(0,-1);
	cout<<dp[0][0];
}

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5020 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 5012 KB Output is correct
7 Correct 3 ms 5016 KB Output is correct
8 Correct 3 ms 4908 KB Output is correct
9 Correct 3 ms 4940 KB Output is correct
10 Correct 3 ms 5016 KB Output is correct
11 Correct 3 ms 5020 KB Output is correct
12 Correct 4 ms 4940 KB Output is correct
13 Correct 3 ms 5012 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 5016 KB Output is correct
16 Correct 3 ms 4940 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 3 ms 5012 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5020 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 5012 KB Output is correct
7 Correct 3 ms 5016 KB Output is correct
8 Correct 3 ms 4908 KB Output is correct
9 Correct 3 ms 4940 KB Output is correct
10 Correct 3 ms 5016 KB Output is correct
11 Correct 3 ms 5020 KB Output is correct
12 Correct 4 ms 4940 KB Output is correct
13 Correct 3 ms 5012 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 5016 KB Output is correct
16 Correct 3 ms 4940 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 3 ms 5012 KB Output is correct
22 Correct 4 ms 5068 KB Output is correct
23 Correct 3 ms 5024 KB Output is correct
24 Correct 4 ms 5028 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 4 ms 5024 KB Output is correct
27 Correct 4 ms 5032 KB Output is correct
28 Correct 4 ms 5068 KB Output is correct
29 Correct 5 ms 5288 KB Output is correct
30 Correct 4 ms 5156 KB Output is correct
31 Correct 4 ms 5020 KB Output is correct
32 Correct 3 ms 5024 KB Output is correct
33 Correct 4 ms 5028 KB Output is correct
34 Correct 4 ms 5072 KB Output is correct
35 Correct 3 ms 5068 KB Output is correct
36 Correct 4 ms 5080 KB Output is correct
37 Correct 4 ms 5068 KB Output is correct
38 Correct 3 ms 5028 KB Output is correct
39 Correct 4 ms 5148 KB Output is correct
40 Correct 3 ms 5068 KB Output is correct
41 Correct 4 ms 5156 KB Output is correct
42 Correct 4 ms 5060 KB Output is correct
43 Correct 3 ms 5024 KB Output is correct
44 Correct 4 ms 5196 KB Output is correct
45 Correct 4 ms 5068 KB Output is correct
46 Correct 4 ms 5068 KB Output is correct
47 Correct 4 ms 5068 KB Output is correct
48 Correct 3 ms 5196 KB Output is correct
49 Correct 4 ms 5196 KB Output is correct
50 Correct 3 ms 5068 KB Output is correct
51 Correct 4 ms 5132 KB Output is correct
52 Correct 4 ms 5068 KB Output is correct
53 Correct 3 ms 5068 KB Output is correct
54 Correct 4 ms 5068 KB Output is correct
55 Correct 4 ms 5068 KB Output is correct
56 Correct 3 ms 5024 KB Output is correct
57 Correct 3 ms 5196 KB Output is correct
58 Correct 4 ms 5032 KB Output is correct
59 Correct 3 ms 5068 KB Output is correct
60 Correct 4 ms 5196 KB Output is correct
61 Correct 4 ms 5068 KB Output is correct
62 Correct 4 ms 5196 KB Output is correct
63 Correct 4 ms 5068 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 5020 KB Output is correct
2 Correct 3 ms 5008 KB Output is correct
3 Correct 3 ms 4940 KB Output is correct
4 Correct 3 ms 5012 KB Output is correct
5 Correct 3 ms 4940 KB Output is correct
6 Correct 3 ms 5012 KB Output is correct
7 Correct 3 ms 5016 KB Output is correct
8 Correct 3 ms 4908 KB Output is correct
9 Correct 3 ms 4940 KB Output is correct
10 Correct 3 ms 5016 KB Output is correct
11 Correct 3 ms 5020 KB Output is correct
12 Correct 4 ms 4940 KB Output is correct
13 Correct 3 ms 5012 KB Output is correct
14 Correct 3 ms 4940 KB Output is correct
15 Correct 3 ms 5016 KB Output is correct
16 Correct 3 ms 4940 KB Output is correct
17 Correct 3 ms 4940 KB Output is correct
18 Correct 3 ms 4940 KB Output is correct
19 Correct 3 ms 4940 KB Output is correct
20 Correct 3 ms 4940 KB Output is correct
21 Correct 3 ms 5012 KB Output is correct
22 Correct 4 ms 5068 KB Output is correct
23 Correct 3 ms 5024 KB Output is correct
24 Correct 4 ms 5028 KB Output is correct
25 Correct 3 ms 5068 KB Output is correct
26 Correct 4 ms 5024 KB Output is correct
27 Correct 4 ms 5032 KB Output is correct
28 Correct 4 ms 5068 KB Output is correct
29 Correct 5 ms 5288 KB Output is correct
30 Correct 4 ms 5156 KB Output is correct
31 Correct 4 ms 5020 KB Output is correct
32 Correct 3 ms 5024 KB Output is correct
33 Correct 4 ms 5028 KB Output is correct
34 Correct 4 ms 5072 KB Output is correct
35 Correct 3 ms 5068 KB Output is correct
36 Correct 4 ms 5080 KB Output is correct
37 Correct 4 ms 5068 KB Output is correct
38 Correct 3 ms 5028 KB Output is correct
39 Correct 4 ms 5148 KB Output is correct
40 Correct 3 ms 5068 KB Output is correct
41 Correct 4 ms 5156 KB Output is correct
42 Correct 4 ms 5060 KB Output is correct
43 Correct 3 ms 5024 KB Output is correct
44 Correct 4 ms 5196 KB Output is correct
45 Correct 4 ms 5068 KB Output is correct
46 Correct 4 ms 5068 KB Output is correct
47 Correct 4 ms 5068 KB Output is correct
48 Correct 3 ms 5196 KB Output is correct
49 Correct 4 ms 5196 KB Output is correct
50 Correct 3 ms 5068 KB Output is correct
51 Correct 4 ms 5132 KB Output is correct
52 Correct 4 ms 5068 KB Output is correct
53 Correct 3 ms 5068 KB Output is correct
54 Correct 4 ms 5068 KB Output is correct
55 Correct 4 ms 5068 KB Output is correct
56 Correct 3 ms 5024 KB Output is correct
57 Correct 3 ms 5196 KB Output is correct
58 Correct 4 ms 5032 KB Output is correct
59 Correct 3 ms 5068 KB Output is correct
60 Correct 4 ms 5196 KB Output is correct
61 Correct 4 ms 5068 KB Output is correct
62 Correct 4 ms 5196 KB Output is correct
63 Correct 4 ms 5068 KB Output is correct
64 Correct 146 ms 15880 KB Output is correct
65 Correct 156 ms 15876 KB Output is correct
66 Correct 155 ms 15884 KB Output is correct
67 Correct 150 ms 15996 KB Output is correct
68 Correct 152 ms 15984 KB Output is correct
69 Correct 170 ms 16156 KB Output is correct
70 Correct 149 ms 15936 KB Output is correct
71 Correct 161 ms 15888 KB Output is correct
72 Correct 151 ms 15984 KB Output is correct
73 Correct 144 ms 33676 KB Output is correct
74 Correct 165 ms 33660 KB Output is correct
75 Correct 155 ms 15852 KB Output is correct
76 Correct 157 ms 15820 KB Output is correct
77 Correct 154 ms 15744 KB Output is correct
78 Correct 131 ms 15836 KB Output is correct
79 Correct 163 ms 15784 KB Output is correct
80 Correct 128 ms 15752 KB Output is correct
81 Correct 115 ms 17144 KB Output is correct
82 Correct 142 ms 16320 KB Output is correct
83 Correct 169 ms 23436 KB Output is correct
84 Correct 169 ms 26728 KB Output is correct
85 Correct 159 ms 26156 KB Output is correct
86 Correct 161 ms 17912 KB Output is correct
87 Correct 151 ms 17072 KB Output is correct
88 Correct 124 ms 17468 KB Output is correct
89 Correct 123 ms 17436 KB Output is correct
90 Correct 148 ms 17096 KB Output is correct
91 Correct 149 ms 17468 KB Output is correct
92 Correct 144 ms 17992 KB Output is correct
93 Correct 121 ms 21668 KB Output is correct
94 Correct 132 ms 24216 KB Output is correct
95 Correct 134 ms 22048 KB Output is correct
96 Correct 138 ms 19548 KB Output is correct
97 Correct 116 ms 17224 KB Output is correct
98 Correct 120 ms 16564 KB Output is correct
99 Correct 152 ms 16256 KB Output is correct
100 Correct 143 ms 20820 KB Output is correct
101 Correct 131 ms 17920 KB Output is correct
102 Correct 141 ms 16788 KB Output is correct
103 Correct 138 ms 16464 KB Output is correct
104 Correct 84 ms 18540 KB Output is correct
105 Correct 172 ms 29204 KB Output is correct
106 Correct 84 ms 18280 KB Output is correct
107 Correct 78 ms 18252 KB Output is correct
108 Correct 141 ms 34744 KB Output is correct
109 Correct 83 ms 18436 KB Output is correct
110 Correct 150 ms 35132 KB Output is correct
111 Correct 130 ms 15764 KB Output is correct