oj.uz

Submission #301024

# Submission time Handle Problem Language Result Execution time Memory
301024 2020-09-17T15:54:56 Z milisav Power Plant (JOI20_power) C++14
100 / 100
 249 ms 68344 KB 
#include<bits/stdc++.h>
#pragma GCC optimize("O3")
#define maxn 2000000
using namespace std;
int n;
vector<int> a[maxn];
char s[maxn];
int dp[maxn];
int ans=0;
void dfs(int u,int p=-1) {
    for(auto v:a[u]) if(v!=p) dfs(v,u);
    int ad=0;
    if(s[u]=='1') ad=1;
    for(auto v:a[u]) if(v!=p) ans=max(ans,dp[v]+ad);
    dp[u]=-ad;
    for(auto v:a[u]) if(v!=p) dp[u]+=dp[v];
    dp[u]=max(dp[u],ad);
    ans=max(ans,dp[u]);
}
int main() {
    int u,v;
    scanf("%d",&n);
    for(int i=0;i<n-1;i++) {
        scanf("%d %d",&u,&v);
        a[u].push_back(v);
        a[v].push_back(u);
    }
    scanf("%s",s+1);
    dfs(1);
    printf("%d",ans);
	return 0;
}

Compilation message

power.cpp: In function 'int main()':
power.cpp:22:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   22 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
power.cpp:24:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   24 |         scanf("%d %d",&u,&v);
      |         ~~~~~^~~~~~~~~~~~~~~
power.cpp:28:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   28 |     scanf("%s",s+1);
      |     ~~~~~^~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 47232 KB Output is correct
2 Correct 33 ms 47232 KB Output is correct
3 Correct 32 ms 47232 KB Output is correct
4 Correct 32 ms 47232 KB Output is correct
5 Correct 32 ms 47224 KB Output is correct
6 Correct 32 ms 47232 KB Output is correct
7 Correct 32 ms 47232 KB Output is correct
8 Correct 32 ms 47232 KB Output is correct
9 Correct 32 ms 47232 KB Output is correct
10 Correct 33 ms 47224 KB Output is correct
11 Correct 34 ms 47232 KB Output is correct
12 Correct 32 ms 47224 KB Output is correct
13 Correct 32 ms 47224 KB Output is correct
14 Correct 32 ms 47232 KB Output is correct
15 Correct 32 ms 47232 KB Output is correct
16 Correct 33 ms 47224 KB Output is correct
17 Correct 34 ms 47224 KB Output is correct
18 Correct 33 ms 47232 KB Output is correct
19 Correct 33 ms 47360 KB Output is correct
20 Correct 34 ms 47232 KB Output is correct
21 Correct 32 ms 47264 KB Output is correct

Subtask #2
41.0 / 41.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 47232 KB Output is correct
2 Correct 33 ms 47232 KB Output is correct
3 Correct 32 ms 47232 KB Output is correct
4 Correct 32 ms 47232 KB Output is correct
5 Correct 32 ms 47224 KB Output is correct
6 Correct 32 ms 47232 KB Output is correct
7 Correct 32 ms 47232 KB Output is correct
8 Correct 32 ms 47232 KB Output is correct
9 Correct 32 ms 47232 KB Output is correct
10 Correct 33 ms 47224 KB Output is correct
11 Correct 34 ms 47232 KB Output is correct
12 Correct 32 ms 47224 KB Output is correct
13 Correct 32 ms 47224 KB Output is correct
14 Correct 32 ms 47232 KB Output is correct
15 Correct 32 ms 47232 KB Output is correct
16 Correct 33 ms 47224 KB Output is correct
17 Correct 34 ms 47224 KB Output is correct
18 Correct 33 ms 47232 KB Output is correct
19 Correct 33 ms 47360 KB Output is correct
20 Correct 34 ms 47232 KB Output is correct
21 Correct 32 ms 47264 KB Output is correct
22 Correct 34 ms 47360 KB Output is correct
23 Correct 38 ms 47360 KB Output is correct
24 Correct 33 ms 47352 KB Output is correct
25 Correct 33 ms 47360 KB Output is correct
26 Correct 34 ms 47360 KB Output is correct
27 Correct 33 ms 47352 KB Output is correct
28 Correct 34 ms 47488 KB Output is correct
29 Correct 33 ms 47488 KB Output is correct
30 Correct 34 ms 47480 KB Output is correct
31 Correct 34 ms 47360 KB Output is correct
32 Correct 33 ms 47352 KB Output is correct
33 Correct 33 ms 47352 KB Output is correct
34 Correct 33 ms 47360 KB Output is correct
35 Correct 32 ms 47360 KB Output is correct
36 Correct 33 ms 47360 KB Output is correct
37 Correct 33 ms 47360 KB Output is correct
38 Correct 35 ms 47360 KB Output is correct
39 Correct 33 ms 47480 KB Output is correct
40 Correct 34 ms 47360 KB Output is correct
41 Correct 34 ms 47480 KB Output is correct
42 Correct 33 ms 47360 KB Output is correct
43 Correct 34 ms 47356 KB Output is correct
44 Correct 33 ms 47360 KB Output is correct
45 Correct 34 ms 47480 KB Output is correct
46 Correct 33 ms 47352 KB Output is correct
47 Correct 33 ms 47352 KB Output is correct
48 Correct 34 ms 47616 KB Output is correct
49 Correct 33 ms 47488 KB Output is correct
50 Correct 34 ms 47360 KB Output is correct
51 Correct 34 ms 47480 KB Output is correct
52 Correct 34 ms 47360 KB Output is correct
53 Correct 34 ms 47360 KB Output is correct
54 Correct 33 ms 47360 KB Output is correct
55 Correct 33 ms 47360 KB Output is correct
56 Correct 34 ms 47352 KB Output is correct
57 Correct 33 ms 47480 KB Output is correct
58 Correct 32 ms 47480 KB Output is correct
59 Correct 33 ms 47352 KB Output is correct
60 Correct 33 ms 47488 KB Output is correct
61 Correct 33 ms 47488 KB Output is correct
62 Correct 33 ms 47488 KB Output is correct
63 Correct 33 ms 47360 KB Output is correct

Subtask #3
53.0 / 53.0

# Verdict Execution time Memory Grader output
1 Correct 32 ms 47232 KB Output is correct
2 Correct 33 ms 47232 KB Output is correct
3 Correct 32 ms 47232 KB Output is correct
4 Correct 32 ms 47232 KB Output is correct
5 Correct 32 ms 47224 KB Output is correct
6 Correct 32 ms 47232 KB Output is correct
7 Correct 32 ms 47232 KB Output is correct
8 Correct 32 ms 47232 KB Output is correct
9 Correct 32 ms 47232 KB Output is correct
10 Correct 33 ms 47224 KB Output is correct
11 Correct 34 ms 47232 KB Output is correct
12 Correct 32 ms 47224 KB Output is correct
13 Correct 32 ms 47224 KB Output is correct
14 Correct 32 ms 47232 KB Output is correct
15 Correct 32 ms 47232 KB Output is correct
16 Correct 33 ms 47224 KB Output is correct
17 Correct 34 ms 47224 KB Output is correct
18 Correct 33 ms 47232 KB Output is correct
19 Correct 33 ms 47360 KB Output is correct
20 Correct 34 ms 47232 KB Output is correct
21 Correct 32 ms 47264 KB Output is correct
22 Correct 34 ms 47360 KB Output is correct
23 Correct 38 ms 47360 KB Output is correct
24 Correct 33 ms 47352 KB Output is correct
25 Correct 33 ms 47360 KB Output is correct
26 Correct 34 ms 47360 KB Output is correct
27 Correct 33 ms 47352 KB Output is correct
28 Correct 34 ms 47488 KB Output is correct
29 Correct 33 ms 47488 KB Output is correct
30 Correct 34 ms 47480 KB Output is correct
31 Correct 34 ms 47360 KB Output is correct
32 Correct 33 ms 47352 KB Output is correct
33 Correct 33 ms 47352 KB Output is correct
34 Correct 33 ms 47360 KB Output is correct
35 Correct 32 ms 47360 KB Output is correct
36 Correct 33 ms 47360 KB Output is correct
37 Correct 33 ms 47360 KB Output is correct
38 Correct 35 ms 47360 KB Output is correct
39 Correct 33 ms 47480 KB Output is correct
40 Correct 34 ms 47360 KB Output is correct
41 Correct 34 ms 47480 KB Output is correct
42 Correct 33 ms 47360 KB Output is correct
43 Correct 34 ms 47356 KB Output is correct
44 Correct 33 ms 47360 KB Output is correct
45 Correct 34 ms 47480 KB Output is correct
46 Correct 33 ms 47352 KB Output is correct
47 Correct 33 ms 47352 KB Output is correct
48 Correct 34 ms 47616 KB Output is correct
49 Correct 33 ms 47488 KB Output is correct
50 Correct 34 ms 47360 KB Output is correct
51 Correct 34 ms 47480 KB Output is correct
52 Correct 34 ms 47360 KB Output is correct
53 Correct 34 ms 47360 KB Output is correct
54 Correct 33 ms 47360 KB Output is correct
55 Correct 33 ms 47360 KB Output is correct
56 Correct 34 ms 47352 KB Output is correct
57 Correct 33 ms 47480 KB Output is correct
58 Correct 32 ms 47480 KB Output is correct
59 Correct 33 ms 47352 KB Output is correct
60 Correct 33 ms 47488 KB Output is correct
61 Correct 33 ms 47488 KB Output is correct
62 Correct 33 ms 47488 KB Output is correct
63 Correct 33 ms 47360 KB Output is correct
64 Correct 224 ms 54648 KB Output is correct
65 Correct 220 ms 54648 KB Output is correct
66 Correct 218 ms 54652 KB Output is correct
67 Correct 217 ms 54648 KB Output is correct
68 Correct 216 ms 54744 KB Output is correct
69 Correct 217 ms 54648 KB Output is correct
70 Correct 227 ms 54708 KB Output is correct
71 Correct 216 ms 54648 KB Output is correct
72 Correct 219 ms 54648 KB Output is correct
73 Correct 244 ms 67192 KB Output is correct
74 Correct 249 ms 67196 KB Output is correct
75 Correct 212 ms 54588 KB Output is correct
76 Correct 209 ms 54520 KB Output is correct
77 Correct 229 ms 54648 KB Output is correct
78 Correct 235 ms 54520 KB Output is correct
79 Correct 222 ms 54648 KB Output is correct
80 Correct 216 ms 54520 KB Output is correct
81 Correct 193 ms 54880 KB Output is correct
82 Correct 212 ms 54776 KB Output is correct
83 Correct 225 ms 59768 KB Output is correct
84 Correct 224 ms 61944 KB Output is correct
85 Correct 246 ms 61560 KB Output is correct
86 Correct 223 ms 55928 KB Output is correct
87 Correct 217 ms 55416 KB Output is correct
88 Correct 210 ms 55800 KB Output is correct
89 Correct 207 ms 55928 KB Output is correct
90 Correct 209 ms 55672 KB Output is correct
91 Correct 209 ms 55928 KB Output is correct
92 Correct 221 ms 56312 KB Output is correct
93 Correct 221 ms 58740 KB Output is correct
94 Correct 204 ms 60524 KB Output is correct
95 Correct 206 ms 58996 KB Output is correct
96 Correct 216 ms 57240 KB Output is correct
97 Correct 196 ms 55708 KB Output is correct
98 Correct 210 ms 55288 KB Output is correct
99 Correct 219 ms 54984 KB Output is correct
100 Correct 217 ms 58104 KB Output is correct
101 Correct 210 ms 56184 KB Output is correct
102 Correct 206 ms 55416 KB Output is correct
103 Correct 216 ms 55160 KB Output is correct
104 Correct 138 ms 55276 KB Output is correct
105 Correct 246 ms 64124 KB Output is correct
106 Correct 139 ms 55272 KB Output is correct
107 Correct 138 ms 55384 KB Output is correct
108 Correct 244 ms 68088 KB Output is correct
109 Correct 137 ms 55272 KB Output is correct
110 Correct 242 ms 68344 KB Output is correct
111 Correct 203 ms 54648 KB Output is correct