답안 #296140

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
296140	2020-09-10T10:21:11 Z	Pyqe	Power Plant (JOI20_power)	C++14	100 / 100	426 ms	38152 KB

power

#include <bits/stdc++.h>

using namespace std;

long long n,dp[200069];
bitset<200069> a,vtd;
vector<long long> al[200069],dpl[200069];

void bd(long long x)
{
	long long i,sz=al[x].size(),l;
	
	vtd[x]=1;
	dp[x]=-a[x];
	for(i=0;i<sz;i++)
	{
		l=al[x][i];
		if(!vtd[l])
		{
			bd(l);
			dp[x]+=max(dp[l],(long long)a[l]);
		}
	}
}

void bd2(long long x,long long w)
{
	long long i,sz=al[x].size(),l;
	
	vtd[x]=1;
	for(i=0;i<sz;i++)
	{
		l=al[x][i];
		if(!vtd[l])
		{
			dpl[x][i]=max(dp[l],(long long)a[l]);
			bd2(l,max(w+dp[x]-dpl[x][i],(long long)a[x]));
		}
		else
		{
			dpl[x][i]=w;
		}
	}
}

int main()
{
	long long i,j,k,l,sz,sm,z,c=0;
	string s;
	
	scanf("%lld",&n);
	for(i=0;i<n-1;i++)
	{
		scanf("%lld%lld",&k,&l);
		al[k].push_back(l);
		al[l].push_back(k);
		dpl[k].push_back(0);
		dpl[l].push_back(0);
	}
	cin>>s;
	for(i=1;i<=n;i++)
	{
		a[i]=s[i-1]-'0';
		c+=a[i];
	}
	z=2*(c>=2);
	bd(1);
	vtd.reset();
	bd2(1,0);
	for(i=1;i<=n;i++)
	{
		sm=-a[i];
		sz=dpl[i].size();
		for(j=0;j<sz;j++)
		{
			sm+=dpl[i][j];
		}
		z=max(z,max(sm,(long long)a[i]));
	}
	printf("%lld\n",z);
}

Compilation message

power.cpp: In function 'int main()':
power.cpp:51:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   51 |  scanf("%lld",&n);
      |  ~~~~~^~~~~~~~~~~
power.cpp:54:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   54 |   scanf("%lld%lld",&k,&l);
      |   ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	9728 KB	Output is correct
2	Correct	7 ms	9728 KB	Output is correct
3	Correct	7 ms	9728 KB	Output is correct
4	Correct	7 ms	9728 KB	Output is correct
5	Correct	7 ms	9728 KB	Output is correct
6	Correct	7 ms	9728 KB	Output is correct
7	Correct	7 ms	9728 KB	Output is correct
8	Correct	8 ms	9728 KB	Output is correct
9	Correct	7 ms	9728 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	7 ms	9728 KB	Output is correct
12	Correct	7 ms	9728 KB	Output is correct
13	Correct	7 ms	9728 KB	Output is correct
14	Correct	7 ms	9728 KB	Output is correct
15	Correct	7 ms	9728 KB	Output is correct
16	Correct	7 ms	9728 KB	Output is correct
17	Correct	7 ms	9728 KB	Output is correct
18	Correct	7 ms	9728 KB	Output is correct
19	Correct	7 ms	9728 KB	Output is correct
20	Correct	7 ms	9728 KB	Output is correct
21	Correct	7 ms	9728 KB	Output is correct

Subtask #2
41.0 / 41.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	9728 KB	Output is correct
2	Correct	7 ms	9728 KB	Output is correct
3	Correct	7 ms	9728 KB	Output is correct
4	Correct	7 ms	9728 KB	Output is correct
5	Correct	7 ms	9728 KB	Output is correct
6	Correct	7 ms	9728 KB	Output is correct
7	Correct	7 ms	9728 KB	Output is correct
8	Correct	8 ms	9728 KB	Output is correct
9	Correct	7 ms	9728 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	7 ms	9728 KB	Output is correct
12	Correct	7 ms	9728 KB	Output is correct
13	Correct	7 ms	9728 KB	Output is correct
14	Correct	7 ms	9728 KB	Output is correct
15	Correct	7 ms	9728 KB	Output is correct
16	Correct	7 ms	9728 KB	Output is correct
17	Correct	7 ms	9728 KB	Output is correct
18	Correct	7 ms	9728 KB	Output is correct
19	Correct	7 ms	9728 KB	Output is correct
20	Correct	7 ms	9728 KB	Output is correct
21	Correct	7 ms	9728 KB	Output is correct
22	Correct	8 ms	9984 KB	Output is correct
23	Correct	8 ms	9964 KB	Output is correct
24	Correct	8 ms	9984 KB	Output is correct
25	Correct	9 ms	9984 KB	Output is correct
26	Correct	8 ms	9984 KB	Output is correct
27	Correct	9 ms	9984 KB	Output is correct
28	Correct	8 ms	9984 KB	Output is correct
29	Correct	10 ms	9984 KB	Output is correct
30	Correct	10 ms	9984 KB	Output is correct
31	Correct	8 ms	9984 KB	Output is correct
32	Correct	9 ms	9984 KB	Output is correct
33	Correct	9 ms	9984 KB	Output is correct
34	Correct	8 ms	9984 KB	Output is correct
35	Correct	8 ms	9984 KB	Output is correct
36	Correct	8 ms	9984 KB	Output is correct
37	Correct	8 ms	9984 KB	Output is correct
38	Correct	8 ms	9984 KB	Output is correct
39	Correct	9 ms	9984 KB	Output is correct
40	Correct	8 ms	9984 KB	Output is correct
41	Correct	8 ms	9984 KB	Output is correct
42	Correct	8 ms	9984 KB	Output is correct
43	Correct	9 ms	9984 KB	Output is correct
44	Correct	8 ms	9984 KB	Output is correct
45	Correct	8 ms	9984 KB	Output is correct
46	Correct	8 ms	9984 KB	Output is correct
47	Correct	8 ms	9984 KB	Output is correct
48	Correct	9 ms	9984 KB	Output is correct
49	Correct	9 ms	9984 KB	Output is correct
50	Correct	8 ms	9984 KB	Output is correct
51	Correct	8 ms	9984 KB	Output is correct
52	Correct	9 ms	10016 KB	Output is correct
53	Correct	8 ms	9984 KB	Output is correct
54	Correct	8 ms	10008 KB	Output is correct
55	Correct	9 ms	9984 KB	Output is correct
56	Correct	8 ms	9984 KB	Output is correct
57	Correct	8 ms	9984 KB	Output is correct
58	Correct	8 ms	9984 KB	Output is correct
59	Correct	8 ms	9984 KB	Output is correct
60	Correct	8 ms	9984 KB	Output is correct
61	Correct	8 ms	9984 KB	Output is correct
62	Correct	8 ms	9984 KB	Output is correct
63	Correct	8 ms	9984 KB	Output is correct

Subtask #3
53.0 / 53.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	9728 KB	Output is correct
2	Correct	7 ms	9728 KB	Output is correct
3	Correct	7 ms	9728 KB	Output is correct
4	Correct	7 ms	9728 KB	Output is correct
5	Correct	7 ms	9728 KB	Output is correct
6	Correct	7 ms	9728 KB	Output is correct
7	Correct	7 ms	9728 KB	Output is correct
8	Correct	8 ms	9728 KB	Output is correct
9	Correct	7 ms	9728 KB	Output is correct
10	Correct	7 ms	9728 KB	Output is correct
11	Correct	7 ms	9728 KB	Output is correct
12	Correct	7 ms	9728 KB	Output is correct
13	Correct	7 ms	9728 KB	Output is correct
14	Correct	7 ms	9728 KB	Output is correct
15	Correct	7 ms	9728 KB	Output is correct
16	Correct	7 ms	9728 KB	Output is correct
17	Correct	7 ms	9728 KB	Output is correct
18	Correct	7 ms	9728 KB	Output is correct
19	Correct	7 ms	9728 KB	Output is correct
20	Correct	7 ms	9728 KB	Output is correct
21	Correct	7 ms	9728 KB	Output is correct
22	Correct	8 ms	9984 KB	Output is correct
23	Correct	8 ms	9964 KB	Output is correct
24	Correct	8 ms	9984 KB	Output is correct
25	Correct	9 ms	9984 KB	Output is correct
26	Correct	8 ms	9984 KB	Output is correct
27	Correct	9 ms	9984 KB	Output is correct
28	Correct	8 ms	9984 KB	Output is correct
29	Correct	10 ms	9984 KB	Output is correct
30	Correct	10 ms	9984 KB	Output is correct
31	Correct	8 ms	9984 KB	Output is correct
32	Correct	9 ms	9984 KB	Output is correct
33	Correct	9 ms	9984 KB	Output is correct
34	Correct	8 ms	9984 KB	Output is correct
35	Correct	8 ms	9984 KB	Output is correct
36	Correct	8 ms	9984 KB	Output is correct
37	Correct	8 ms	9984 KB	Output is correct
38	Correct	8 ms	9984 KB	Output is correct
39	Correct	9 ms	9984 KB	Output is correct
40	Correct	8 ms	9984 KB	Output is correct
41	Correct	8 ms	9984 KB	Output is correct
42	Correct	8 ms	9984 KB	Output is correct
43	Correct	9 ms	9984 KB	Output is correct
44	Correct	8 ms	9984 KB	Output is correct
45	Correct	8 ms	9984 KB	Output is correct
46	Correct	8 ms	9984 KB	Output is correct
47	Correct	8 ms	9984 KB	Output is correct
48	Correct	9 ms	9984 KB	Output is correct
49	Correct	9 ms	9984 KB	Output is correct
50	Correct	8 ms	9984 KB	Output is correct
51	Correct	8 ms	9984 KB	Output is correct
52	Correct	9 ms	10016 KB	Output is correct
53	Correct	8 ms	9984 KB	Output is correct
54	Correct	8 ms	10008 KB	Output is correct
55	Correct	9 ms	9984 KB	Output is correct
56	Correct	8 ms	9984 KB	Output is correct
57	Correct	8 ms	9984 KB	Output is correct
58	Correct	8 ms	9984 KB	Output is correct
59	Correct	8 ms	9984 KB	Output is correct
60	Correct	8 ms	9984 KB	Output is correct
61	Correct	8 ms	9984 KB	Output is correct
62	Correct	8 ms	9984 KB	Output is correct
63	Correct	8 ms	9984 KB	Output is correct
64	Correct	370 ms	26508 KB	Output is correct
65	Correct	369 ms	26572 KB	Output is correct
66	Correct	390 ms	26508 KB	Output is correct
67	Correct	386 ms	26632 KB	Output is correct
68	Correct	370 ms	26480 KB	Output is correct
69	Correct	368 ms	26504 KB	Output is correct
70	Correct	380 ms	26504 KB	Output is correct
71	Correct	376 ms	26448 KB	Output is correct
72	Correct	378 ms	26644 KB	Output is correct
73	Correct	426 ms	37000 KB	Output is correct
74	Correct	405 ms	37000 KB	Output is correct
75	Correct	377 ms	28808 KB	Output is correct
76	Correct	393 ms	29064 KB	Output is correct
77	Correct	391 ms	26432 KB	Output is correct
78	Correct	389 ms	26500 KB	Output is correct
79	Correct	385 ms	26536 KB	Output is correct
80	Correct	375 ms	26504 KB	Output is correct
81	Correct	308 ms	26716 KB	Output is correct
82	Correct	344 ms	26472 KB	Output is correct
83	Correct	412 ms	31496 KB	Output is correct
84	Correct	415 ms	33672 KB	Output is correct
85	Correct	397 ms	33416 KB	Output is correct
86	Correct	384 ms	27860 KB	Output is correct
87	Correct	373 ms	27400 KB	Output is correct
88	Correct	369 ms	27524 KB	Output is correct
89	Correct	374 ms	27536 KB	Output is correct
90	Correct	365 ms	27296 KB	Output is correct
91	Correct	370 ms	27524 KB	Output is correct
92	Correct	368 ms	27912 KB	Output is correct
93	Correct	380 ms	29800 KB	Output is correct
94	Correct	364 ms	31456 KB	Output is correct
95	Correct	360 ms	30180 KB	Output is correct
96	Correct	367 ms	28316 KB	Output is correct
97	Correct	375 ms	27020 KB	Output is correct
98	Correct	341 ms	26760 KB	Output is correct
99	Correct	368 ms	26528 KB	Output is correct
100	Correct	369 ms	29488 KB	Output is correct
101	Correct	366 ms	27144 KB	Output is correct
102	Correct	333 ms	26628 KB	Output is correct
103	Correct	369 ms	26888 KB	Output is correct
104	Correct	234 ms	27596 KB	Output is correct
105	Correct	424 ms	33800 KB	Output is correct
106	Correct	233 ms	27604 KB	Output is correct
107	Correct	224 ms	27604 KB	Output is correct
108	Correct	409 ms	37948 KB	Output is correct
109	Correct	228 ms	27604 KB	Output is correct
110	Correct	407 ms	38152 KB	Output is correct
111	Correct	353 ms	26376 KB	Output is correct

답안 #296140

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