답안 #955650

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
955650	2024-03-31T08:52:51 Z	thunopro	Power Plant (JOI20_power)	C++14	100 / 100	144 ms	28388 KB

power

#include<bits/stdc++.h>
using namespace std ; 
#define maxn 200009 
#define ll long long 
#define fi first 
#define se second 
#define pb push_back 
#define left id<<1
#define right id<<1|1 
#define _lower(x) lower_bound(v.begin(),v.end(),x)-v.begin()+1 
#define TIME (1.0*clock()/TIME_PERS_SEC) 
#define re exit(0); 

const int mod = 1e9+7 ; 
const int INF = 1e9 ; 

typedef vector<int> vi ; 
typedef pair<int,int> pii ; 
typedef vector<pii> vii ; 

void add ( int &a , int b ) 
{
	a += b ; 
	if ( a >= mod ) a -= mod ; 
	if ( a < 0 ) a += mod ; 
}

template < typename T > void chkmin ( T &a , T b ) { if ( a > b ) a = b ;} 
template < typename T > void chkmax ( T &a , T b ) { if ( a < b ) a = b ;} 

void rf () 
{
	freopen ("bai1.inp","r",stdin) ; 
}

mt19937 rng (time(0)) ; 

int _pow ( int a , int n ) 
{
	if ( n == 0 ) return 1 ; 
	int res = _pow (a,n/2) ; 
	if ( n % 2 ) return 1ll*res*res%mod*a%mod ; 
	else return 1ll*res*res%mod ; 
}

int n ; 
vi adjList [maxn] ; 
int ON [maxn] ; 
int dp [maxn] , res = 0 ; 
void dfs ( int u , int par = -1 ) 
{
	dp [u] = ON [u] ; 
	int sum = 0 , Max = 0 ; 
	for ( auto v : adjList [u] ) 
	{
		if ( v == par ) continue ; 
		dfs (v,u) ; 
		sum += dp [v] ; 
		chkmax (Max,dp[v]) ;
	}
	chkmax (dp[u],sum-ON[u]) ; 
	chkmax (res,dp[u]) ; 
	chkmax (res,Max+ON[u]) ; 
}
int main ()
{
	ios_base::sync_with_stdio(0); 
	cin.tie(0);cout.tie(0); 
//	rf () ; 
	cin >> n ; 
	for ( int i = 1 ; i < n ; i ++ ) 
	{
		int u , v ; cin >> u >> v ; 
		adjList [u] . pb (v) ; 
		adjList [v] . pb (u) ; 
	}
	for ( int i = 1 ; i <= n ; i ++ ) 
	{
		char c ; cin >> c ; 
		ON [i] = c - '0' ; 
	}
	dfs (1) ; 
	cout << res ; 
}

Compilation message

power.cpp: In function 'void rf()':
power.cpp:33:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |  freopen ("bai1.inp","r",stdin) ;
      |  ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	6488 KB	Output is correct
2	Correct	2 ms	6492 KB	Output is correct
3	Correct	3 ms	6328 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	2 ms	6492 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	2 ms	6492 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	2 ms	6492 KB	Output is correct
11	Correct	2 ms	6336 KB	Output is correct
12	Correct	2 ms	6492 KB	Output is correct
13	Correct	2 ms	6332 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	2 ms	6492 KB	Output is correct
17	Correct	2 ms	6548 KB	Output is correct
18	Correct	3 ms	6552 KB	Output is correct
19	Correct	2 ms	6488 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	6488 KB	Output is correct
2	Correct	2 ms	6492 KB	Output is correct
3	Correct	3 ms	6328 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	2 ms	6492 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	2 ms	6492 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	2 ms	6492 KB	Output is correct
11	Correct	2 ms	6336 KB	Output is correct
12	Correct	2 ms	6492 KB	Output is correct
13	Correct	2 ms	6332 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	2 ms	6492 KB	Output is correct
17	Correct	2 ms	6548 KB	Output is correct
18	Correct	3 ms	6552 KB	Output is correct
19	Correct	2 ms	6488 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	3 ms	6492 KB	Output is correct
23	Correct	3 ms	6596 KB	Output is correct
24	Correct	3 ms	6492 KB	Output is correct
25	Correct	3 ms	6492 KB	Output is correct
26	Correct	3 ms	6492 KB	Output is correct
27	Correct	3 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	3 ms	6748 KB	Output is correct
30	Correct	3 ms	6560 KB	Output is correct
31	Correct	2 ms	6492 KB	Output is correct
32	Correct	3 ms	6492 KB	Output is correct
33	Correct	3 ms	6492 KB	Output is correct
34	Correct	2 ms	6492 KB	Output is correct
35	Correct	3 ms	6492 KB	Output is correct
36	Correct	2 ms	6492 KB	Output is correct
37	Correct	3 ms	6492 KB	Output is correct
38	Correct	2 ms	6492 KB	Output is correct
39	Correct	2 ms	6492 KB	Output is correct
40	Correct	2 ms	6492 KB	Output is correct
41	Correct	2 ms	6488 KB	Output is correct
42	Correct	2 ms	6492 KB	Output is correct
43	Correct	3 ms	6492 KB	Output is correct
44	Correct	3 ms	6488 KB	Output is correct
45	Correct	3 ms	6488 KB	Output is correct
46	Correct	2 ms	6492 KB	Output is correct
47	Correct	2 ms	6632 KB	Output is correct
48	Correct	2 ms	6688 KB	Output is correct
49	Correct	3 ms	6560 KB	Output is correct
50	Correct	2 ms	6636 KB	Output is correct
51	Correct	2 ms	6492 KB	Output is correct
52	Correct	2 ms	6492 KB	Output is correct
53	Correct	2 ms	6492 KB	Output is correct
54	Correct	3 ms	6492 KB	Output is correct
55	Correct	2 ms	6492 KB	Output is correct
56	Correct	2 ms	6492 KB	Output is correct
57	Correct	3 ms	6748 KB	Output is correct
58	Correct	2 ms	6648 KB	Output is correct
59	Correct	2 ms	6492 KB	Output is correct
60	Correct	2 ms	6492 KB	Output is correct
61	Correct	2 ms	6492 KB	Output is correct
62	Correct	2 ms	6492 KB	Output is correct
63	Correct	2 ms	6492 KB	Output is correct

Subtask #3
53.0 / 53.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	6488 KB	Output is correct
2	Correct	2 ms	6492 KB	Output is correct
3	Correct	3 ms	6328 KB	Output is correct
4	Correct	2 ms	6492 KB	Output is correct
5	Correct	2 ms	6492 KB	Output is correct
6	Correct	2 ms	6492 KB	Output is correct
7	Correct	2 ms	6492 KB	Output is correct
8	Correct	2 ms	6492 KB	Output is correct
9	Correct	2 ms	6492 KB	Output is correct
10	Correct	2 ms	6492 KB	Output is correct
11	Correct	2 ms	6336 KB	Output is correct
12	Correct	2 ms	6492 KB	Output is correct
13	Correct	2 ms	6332 KB	Output is correct
14	Correct	2 ms	6492 KB	Output is correct
15	Correct	2 ms	6492 KB	Output is correct
16	Correct	2 ms	6492 KB	Output is correct
17	Correct	2 ms	6548 KB	Output is correct
18	Correct	3 ms	6552 KB	Output is correct
19	Correct	2 ms	6488 KB	Output is correct
20	Correct	2 ms	6492 KB	Output is correct
21	Correct	2 ms	6492 KB	Output is correct
22	Correct	3 ms	6492 KB	Output is correct
23	Correct	3 ms	6596 KB	Output is correct
24	Correct	3 ms	6492 KB	Output is correct
25	Correct	3 ms	6492 KB	Output is correct
26	Correct	3 ms	6492 KB	Output is correct
27	Correct	3 ms	6492 KB	Output is correct
28	Correct	2 ms	6492 KB	Output is correct
29	Correct	3 ms	6748 KB	Output is correct
30	Correct	3 ms	6560 KB	Output is correct
31	Correct	2 ms	6492 KB	Output is correct
32	Correct	3 ms	6492 KB	Output is correct
33	Correct	3 ms	6492 KB	Output is correct
34	Correct	2 ms	6492 KB	Output is correct
35	Correct	3 ms	6492 KB	Output is correct
36	Correct	2 ms	6492 KB	Output is correct
37	Correct	3 ms	6492 KB	Output is correct
38	Correct	2 ms	6492 KB	Output is correct
39	Correct	2 ms	6492 KB	Output is correct
40	Correct	2 ms	6492 KB	Output is correct
41	Correct	2 ms	6488 KB	Output is correct
42	Correct	2 ms	6492 KB	Output is correct
43	Correct	3 ms	6492 KB	Output is correct
44	Correct	3 ms	6488 KB	Output is correct
45	Correct	3 ms	6488 KB	Output is correct
46	Correct	2 ms	6492 KB	Output is correct
47	Correct	2 ms	6632 KB	Output is correct
48	Correct	2 ms	6688 KB	Output is correct
49	Correct	3 ms	6560 KB	Output is correct
50	Correct	2 ms	6636 KB	Output is correct
51	Correct	2 ms	6492 KB	Output is correct
52	Correct	2 ms	6492 KB	Output is correct
53	Correct	2 ms	6492 KB	Output is correct
54	Correct	3 ms	6492 KB	Output is correct
55	Correct	2 ms	6492 KB	Output is correct
56	Correct	2 ms	6492 KB	Output is correct
57	Correct	3 ms	6748 KB	Output is correct
58	Correct	2 ms	6648 KB	Output is correct
59	Correct	2 ms	6492 KB	Output is correct
60	Correct	2 ms	6492 KB	Output is correct
61	Correct	2 ms	6492 KB	Output is correct
62	Correct	2 ms	6492 KB	Output is correct
63	Correct	2 ms	6492 KB	Output is correct
64	Correct	80 ms	14632 KB	Output is correct
65	Correct	84 ms	14672 KB	Output is correct
66	Correct	72 ms	14676 KB	Output is correct
67	Correct	71 ms	14768 KB	Output is correct
68	Correct	73 ms	14564 KB	Output is correct
69	Correct	107 ms	14700 KB	Output is correct
70	Correct	73 ms	14672 KB	Output is correct
71	Correct	69 ms	14672 KB	Output is correct
72	Correct	80 ms	14556 KB	Output is correct
73	Correct	144 ms	27476 KB	Output is correct
74	Correct	109 ms	27216 KB	Output is correct
75	Correct	81 ms	14420 KB	Output is correct
76	Correct	69 ms	14416 KB	Output is correct
77	Correct	79 ms	14444 KB	Output is correct
78	Correct	73 ms	14552 KB	Output is correct
79	Correct	77 ms	14644 KB	Output is correct
80	Correct	81 ms	14420 KB	Output is correct
81	Correct	68 ms	15232 KB	Output is correct
82	Correct	66 ms	14796 KB	Output is correct
83	Correct	90 ms	19792 KB	Output is correct
84	Correct	99 ms	21972 KB	Output is correct
85	Correct	89 ms	21572 KB	Output is correct
86	Correct	104 ms	15968 KB	Output is correct
87	Correct	81 ms	15444 KB	Output is correct
88	Correct	76 ms	15772 KB	Output is correct
89	Correct	79 ms	15868 KB	Output is correct
90	Correct	76 ms	15608 KB	Output is correct
91	Correct	88 ms	15924 KB	Output is correct
92	Correct	80 ms	16328 KB	Output is correct
93	Correct	78 ms	18676 KB	Output is correct
94	Correct	73 ms	20268 KB	Output is correct
95	Correct	88 ms	19064 KB	Output is correct
96	Correct	74 ms	17232 KB	Output is correct
97	Correct	74 ms	15724 KB	Output is correct
98	Correct	71 ms	15264 KB	Output is correct
99	Correct	102 ms	14920 KB	Output is correct
100	Correct	102 ms	18188 KB	Output is correct
101	Correct	75 ms	16032 KB	Output is correct
102	Correct	71 ms	15360 KB	Output is correct
103	Correct	71 ms	15236 KB	Output is correct
104	Correct	47 ms	15324 KB	Output is correct
105	Correct	94 ms	24144 KB	Output is correct
106	Correct	67 ms	15144 KB	Output is correct
107	Correct	61 ms	15264 KB	Output is correct
108	Correct	112 ms	28388 KB	Output is correct
109	Correct	66 ms	15516 KB	Output is correct
110	Correct	95 ms	28308 KB	Output is correct
111	Correct	64 ms	14416 KB	Output is correct

답안 #955650

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 41.0 / 41.0

Subtask #3 53.0 / 53.0

Subtask #1
6.0 / 6.0

Subtask #2
41.0 / 41.0

Subtask #3
53.0 / 53.0