oj.uz

Submission #295733

# Submission time Handle Problem Language Result Execution time Memory
295733 2020-09-09T20:56:35 Z ChrisT Power Plant (JOI20_power) C++17
100 / 100
 208 ms 35064 KB 
#include <bits/stdc++.h>
using namespace std;
const int MN = 2e5+5;
vector<int> adj[MN];
char power[MN]; int dp[MN][2];
void dfs (int cur, int p = -1) {
	int mx = 0, mx2 = 0;
	for (int i : adj[cur]) if (i != p) {
		dfs(i,cur);
		dp[cur][1] += dp[i][1]; mx = max(mx,dp[i][0]); mx2 = max(mx2,dp[i][1]);
	}
	if (power[cur] == '0') dp[cur][0] = max({dp[cur][1],mx,0}), dp[cur][1] = max(dp[cur][1],0);
	else dp[cur][0] = max({dp[cur][1]-1,mx,mx2+1,1}), dp[cur][1] = max({dp[cur][1],mx2,2})-1;
}
int main () {
	int n;
	scanf ("%d",&n);
	for (int i = 1; i < n; i++) {
		int a,b;
		scanf ("%d %d",&a,&b);
		adj[a].push_back(b); adj[b].push_back(a);
	}
	scanf ("%s",power+1);
	dfs(1);
	printf ("%d\n",max(dp[1][1],dp[1][0]));
	return 0;
}

Compilation message

power.cpp: In function 'int main()':
power.cpp:17:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   17 |  scanf ("%d",&n);
      |  ~~~~~~^~~~~~~~~
power.cpp:20:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   20 |   scanf ("%d %d",&a,&b);
      |   ~~~~~~^~~~~~~~~~~~~~~
power.cpp:23:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   23 |  scanf ("%s",power+1);
      |  ~~~~~~^~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4992 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 3 ms 4992 KB Output is correct
4 Correct 3 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 3 ms 4992 KB Output is correct
9 Correct 3 ms 4992 KB Output is correct
10 Correct 3 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 3 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 3 ms 4992 KB Output is correct
15 Correct 4 ms 5120 KB Output is correct
16 Correct 3 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 3 ms 4992 KB Output is correct
19 Correct 3 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 4 ms 5120 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4992 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 3 ms 4992 KB Output is correct
4 Correct 3 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 3 ms 4992 KB Output is correct
9 Correct 3 ms 4992 KB Output is correct
10 Correct 3 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 3 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 3 ms 4992 KB Output is correct
15 Correct 4 ms 5120 KB Output is correct
16 Correct 3 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 3 ms 4992 KB Output is correct
19 Correct 3 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 4 ms 5120 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct
23 Correct 4 ms 5120 KB Output is correct
24 Correct 4 ms 5120 KB Output is correct
25 Correct 4 ms 5120 KB Output is correct
26 Correct 4 ms 5120 KB Output is correct
27 Correct 4 ms 5120 KB Output is correct
28 Correct 4 ms 5120 KB Output is correct
29 Correct 5 ms 5248 KB Output is correct
30 Correct 4 ms 5248 KB Output is correct
31 Correct 4 ms 5120 KB Output is correct
32 Correct 4 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 4 ms 5120 KB Output is correct
35 Correct 4 ms 5120 KB Output is correct
36 Correct 4 ms 5120 KB Output is correct
37 Correct 4 ms 5120 KB Output is correct
38 Correct 4 ms 5120 KB Output is correct
39 Correct 4 ms 5248 KB Output is correct
40 Correct 4 ms 5120 KB Output is correct
41 Correct 5 ms 5248 KB Output is correct
42 Correct 4 ms 5120 KB Output is correct
43 Correct 4 ms 5120 KB Output is correct
44 Correct 4 ms 5120 KB Output is correct
45 Correct 4 ms 5120 KB Output is correct
46 Correct 4 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 4 ms 5248 KB Output is correct
49 Correct 5 ms 5248 KB Output is correct
50 Correct 5 ms 5120 KB Output is correct
51 Correct 4 ms 5120 KB Output is correct
52 Correct 5 ms 5120 KB Output is correct
53 Correct 4 ms 5120 KB Output is correct
54 Correct 4 ms 5120 KB Output is correct
55 Correct 4 ms 5120 KB Output is correct
56 Correct 4 ms 5120 KB Output is correct
57 Correct 5 ms 5248 KB Output is correct
58 Correct 4 ms 5120 KB Output is correct
59 Correct 4 ms 5120 KB Output is correct
60 Correct 4 ms 5248 KB Output is correct
61 Correct 4 ms 5120 KB Output is correct
62 Correct 4 ms 5248 KB Output is correct
63 Correct 4 ms 5120 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 4992 KB Output is correct
2 Correct 3 ms 4992 KB Output is correct
3 Correct 3 ms 4992 KB Output is correct
4 Correct 3 ms 4992 KB Output is correct
5 Correct 4 ms 4992 KB Output is correct
6 Correct 3 ms 4992 KB Output is correct
7 Correct 4 ms 4992 KB Output is correct
8 Correct 3 ms 4992 KB Output is correct
9 Correct 3 ms 4992 KB Output is correct
10 Correct 3 ms 4992 KB Output is correct
11 Correct 4 ms 4992 KB Output is correct
12 Correct 3 ms 4992 KB Output is correct
13 Correct 3 ms 4992 KB Output is correct
14 Correct 3 ms 4992 KB Output is correct
15 Correct 4 ms 5120 KB Output is correct
16 Correct 3 ms 4992 KB Output is correct
17 Correct 4 ms 4992 KB Output is correct
18 Correct 3 ms 4992 KB Output is correct
19 Correct 3 ms 4992 KB Output is correct
20 Correct 4 ms 4992 KB Output is correct
21 Correct 4 ms 5120 KB Output is correct
22 Correct 4 ms 5120 KB Output is correct
23 Correct 4 ms 5120 KB Output is correct
24 Correct 4 ms 5120 KB Output is correct
25 Correct 4 ms 5120 KB Output is correct
26 Correct 4 ms 5120 KB Output is correct
27 Correct 4 ms 5120 KB Output is correct
28 Correct 4 ms 5120 KB Output is correct
29 Correct 5 ms 5248 KB Output is correct
30 Correct 4 ms 5248 KB Output is correct
31 Correct 4 ms 5120 KB Output is correct
32 Correct 4 ms 5120 KB Output is correct
33 Correct 4 ms 5120 KB Output is correct
34 Correct 4 ms 5120 KB Output is correct
35 Correct 4 ms 5120 KB Output is correct
36 Correct 4 ms 5120 KB Output is correct
37 Correct 4 ms 5120 KB Output is correct
38 Correct 4 ms 5120 KB Output is correct
39 Correct 4 ms 5248 KB Output is correct
40 Correct 4 ms 5120 KB Output is correct
41 Correct 5 ms 5248 KB Output is correct
42 Correct 4 ms 5120 KB Output is correct
43 Correct 4 ms 5120 KB Output is correct
44 Correct 4 ms 5120 KB Output is correct
45 Correct 4 ms 5120 KB Output is correct
46 Correct 4 ms 5120 KB Output is correct
47 Correct 4 ms 5120 KB Output is correct
48 Correct 4 ms 5248 KB Output is correct
49 Correct 5 ms 5248 KB Output is correct
50 Correct 5 ms 5120 KB Output is correct
51 Correct 4 ms 5120 KB Output is correct
52 Correct 5 ms 5120 KB Output is correct
53 Correct 4 ms 5120 KB Output is correct
54 Correct 4 ms 5120 KB Output is correct
55 Correct 4 ms 5120 KB Output is correct
56 Correct 4 ms 5120 KB Output is correct
57 Correct 5 ms 5248 KB Output is correct
58 Correct 4 ms 5120 KB Output is correct
59 Correct 4 ms 5120 KB Output is correct
60 Correct 4 ms 5248 KB Output is correct
61 Correct 4 ms 5120 KB Output is correct
62 Correct 4 ms 5248 KB Output is correct
63 Correct 4 ms 5120 KB Output is correct
64 Correct 189 ms 15864 KB Output is correct
65 Correct 197 ms 15864 KB Output is correct
66 Correct 190 ms 15864 KB Output is correct
67 Correct 182 ms 15864 KB Output is correct
68 Correct 176 ms 15992 KB Output is correct
69 Correct 180 ms 15992 KB Output is correct
70 Correct 183 ms 15864 KB Output is correct
71 Correct 170 ms 15864 KB Output is correct
72 Correct 179 ms 16048 KB Output is correct
73 Correct 195 ms 33528 KB Output is correct
74 Correct 196 ms 33656 KB Output is correct
75 Correct 180 ms 15736 KB Output is correct
76 Correct 174 ms 15736 KB Output is correct
77 Correct 180 ms 15736 KB Output is correct
78 Correct 185 ms 15736 KB Output is correct
79 Correct 185 ms 15736 KB Output is correct
80 Correct 186 ms 15732 KB Output is correct
81 Correct 148 ms 16052 KB Output is correct
82 Correct 166 ms 15988 KB Output is correct
83 Correct 192 ms 23120 KB Output is correct
84 Correct 198 ms 25996 KB Output is correct
85 Correct 190 ms 25592 KB Output is correct
86 Correct 187 ms 17784 KB Output is correct
87 Correct 185 ms 17020 KB Output is correct
88 Correct 178 ms 17400 KB Output is correct
89 Correct 181 ms 17528 KB Output is correct
90 Correct 180 ms 17116 KB Output is correct
91 Correct 177 ms 17400 KB Output is correct
92 Correct 178 ms 17912 KB Output is correct
93 Correct 174 ms 21364 KB Output is correct
94 Correct 181 ms 23664 KB Output is correct
95 Correct 167 ms 21876 KB Output is correct
96 Correct 171 ms 19332 KB Output is correct
97 Correct 164 ms 17180 KB Output is correct
98 Correct 168 ms 16504 KB Output is correct
99 Correct 185 ms 16248 KB Output is correct
100 Correct 168 ms 20600 KB Output is correct
101 Correct 170 ms 17784 KB Output is correct
102 Correct 166 ms 16760 KB Output is correct
103 Correct 177 ms 16508 KB Output is correct
104 Correct 119 ms 16608 KB Output is correct
105 Correct 205 ms 29120 KB Output is correct
106 Correct 108 ms 16488 KB Output is correct
107 Correct 110 ms 16492 KB Output is correct
108 Correct 204 ms 34684 KB Output is correct
109 Correct 108 ms 16620 KB Output is correct
110 Correct 208 ms 35064 KB Output is correct
111 Correct 174 ms 15736 KB Output is correct