#include <bits/stdc++.h>
using namespace std;
#define scd(t) scanf("%d", &t)
#define sclld(t) scanf("%lld", &t)
#define forr(i, j, k) for(int i=j; i<k; i++)
#define frange(i, k) forr(i, 0, k)
#define mp make_pair
#define pb push_back
#define all(vec) vec.begin(), vec.end()
#define f first
#define s second
typedef long long lli;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<pii> vii;
typedef vector<vi> vvi;
typedef vector<bool> vb;
typedef map<int, int> mpii;
typedef set<int> seti;
typedef vector<lli> vll;
typedef long double ld;
void fastio() {
ios_base::sync_with_stdio(false);
cin.tie(0);
cout.tie(0);
}
void usaco() {
freopen("/home/student_visitors/v_hari_aakash_k/Desktop/IOITC_practice/input.in", "r", stdin);
}
vvi graph;
vi dp1, dp2;
vi plt;
void dfs(int x, int p) {
vi v1, v2;
int t1 = 0, t2 = 0;
for(auto e : graph[x]) {
if(e != p) {
dfs(e, x);
v1.pb(dp1[e]);
v2.pb(dp2[e]);
t1 += dp1[e];
t2 += dp2[e];
}
}
sort(all(v1), greater<>());
sort(all(v2), greater<>());
dp1[x] = dp2[x] = plt[x];
if(v1.size()) {
dp1[x] = max({dp1[x], v1[0], v2[0] + plt[x], t2 - plt[x]});
dp2[x] = max({dp2[x], v2[0] - plt[x], t2 - plt[x]});
}
// printf("%d %d %d\n", x, dp1[x], dp2[x]);
}
int main() {
// usaco();
fastio();
int n;
cin >> n;
graph = vvi(n+1);
frange(i, n-1) {
int a, b;
cin >> a >> b;
graph[a].pb(b);
graph[b].pb(a);
}
string str;
cin >> str;
dp1 = dp2 = plt = vi(n+1);
forr(i, 1, n+1) {
plt[i] = (str[i-1] - '0');
}
dfs(1, 0);
printf("%d\n", dp1[1]);
}
Compilation message
power.cpp: In function 'void usaco()':
power.cpp:34:9: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
34 | freopen("/home/student_visitors/v_hari_aakash_k/Desktop/IOITC_practice/input.in", "r", stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
456 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
456 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
1 ms |
604 KB |
Output is correct |
23 |
Correct |
1 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
604 KB |
Output is correct |
25 |
Correct |
1 ms |
464 KB |
Output is correct |
26 |
Correct |
1 ms |
604 KB |
Output is correct |
27 |
Correct |
1 ms |
612 KB |
Output is correct |
28 |
Correct |
1 ms |
604 KB |
Output is correct |
29 |
Correct |
1 ms |
860 KB |
Output is correct |
30 |
Correct |
1 ms |
668 KB |
Output is correct |
31 |
Correct |
1 ms |
600 KB |
Output is correct |
32 |
Correct |
1 ms |
604 KB |
Output is correct |
33 |
Correct |
1 ms |
604 KB |
Output is correct |
34 |
Correct |
1 ms |
604 KB |
Output is correct |
35 |
Correct |
1 ms |
604 KB |
Output is correct |
36 |
Correct |
1 ms |
600 KB |
Output is correct |
37 |
Correct |
1 ms |
604 KB |
Output is correct |
38 |
Correct |
1 ms |
604 KB |
Output is correct |
39 |
Correct |
1 ms |
604 KB |
Output is correct |
40 |
Correct |
1 ms |
604 KB |
Output is correct |
41 |
Correct |
1 ms |
604 KB |
Output is correct |
42 |
Correct |
1 ms |
604 KB |
Output is correct |
43 |
Correct |
1 ms |
640 KB |
Output is correct |
44 |
Correct |
1 ms |
604 KB |
Output is correct |
45 |
Correct |
1 ms |
604 KB |
Output is correct |
46 |
Correct |
1 ms |
468 KB |
Output is correct |
47 |
Correct |
1 ms |
604 KB |
Output is correct |
48 |
Correct |
1 ms |
604 KB |
Output is correct |
49 |
Correct |
1 ms |
604 KB |
Output is correct |
50 |
Correct |
1 ms |
604 KB |
Output is correct |
51 |
Correct |
1 ms |
604 KB |
Output is correct |
52 |
Correct |
1 ms |
604 KB |
Output is correct |
53 |
Correct |
1 ms |
600 KB |
Output is correct |
54 |
Correct |
1 ms |
604 KB |
Output is correct |
55 |
Correct |
1 ms |
604 KB |
Output is correct |
56 |
Correct |
1 ms |
600 KB |
Output is correct |
57 |
Correct |
1 ms |
860 KB |
Output is correct |
58 |
Correct |
1 ms |
604 KB |
Output is correct |
59 |
Correct |
1 ms |
604 KB |
Output is correct |
60 |
Correct |
1 ms |
600 KB |
Output is correct |
61 |
Correct |
1 ms |
604 KB |
Output is correct |
62 |
Correct |
1 ms |
604 KB |
Output is correct |
63 |
Correct |
1 ms |
604 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
0 ms |
344 KB |
Output is correct |
2 |
Correct |
1 ms |
348 KB |
Output is correct |
3 |
Correct |
0 ms |
348 KB |
Output is correct |
4 |
Correct |
0 ms |
348 KB |
Output is correct |
5 |
Correct |
0 ms |
348 KB |
Output is correct |
6 |
Correct |
0 ms |
348 KB |
Output is correct |
7 |
Correct |
0 ms |
348 KB |
Output is correct |
8 |
Correct |
0 ms |
348 KB |
Output is correct |
9 |
Correct |
0 ms |
456 KB |
Output is correct |
10 |
Correct |
1 ms |
348 KB |
Output is correct |
11 |
Correct |
0 ms |
348 KB |
Output is correct |
12 |
Correct |
0 ms |
348 KB |
Output is correct |
13 |
Correct |
0 ms |
348 KB |
Output is correct |
14 |
Correct |
0 ms |
348 KB |
Output is correct |
15 |
Correct |
0 ms |
348 KB |
Output is correct |
16 |
Correct |
0 ms |
348 KB |
Output is correct |
17 |
Correct |
0 ms |
348 KB |
Output is correct |
18 |
Correct |
0 ms |
348 KB |
Output is correct |
19 |
Correct |
0 ms |
348 KB |
Output is correct |
20 |
Correct |
0 ms |
348 KB |
Output is correct |
21 |
Correct |
0 ms |
344 KB |
Output is correct |
22 |
Correct |
1 ms |
604 KB |
Output is correct |
23 |
Correct |
1 ms |
604 KB |
Output is correct |
24 |
Correct |
1 ms |
604 KB |
Output is correct |
25 |
Correct |
1 ms |
464 KB |
Output is correct |
26 |
Correct |
1 ms |
604 KB |
Output is correct |
27 |
Correct |
1 ms |
612 KB |
Output is correct |
28 |
Correct |
1 ms |
604 KB |
Output is correct |
29 |
Correct |
1 ms |
860 KB |
Output is correct |
30 |
Correct |
1 ms |
668 KB |
Output is correct |
31 |
Correct |
1 ms |
600 KB |
Output is correct |
32 |
Correct |
1 ms |
604 KB |
Output is correct |
33 |
Correct |
1 ms |
604 KB |
Output is correct |
34 |
Correct |
1 ms |
604 KB |
Output is correct |
35 |
Correct |
1 ms |
604 KB |
Output is correct |
36 |
Correct |
1 ms |
600 KB |
Output is correct |
37 |
Correct |
1 ms |
604 KB |
Output is correct |
38 |
Correct |
1 ms |
604 KB |
Output is correct |
39 |
Correct |
1 ms |
604 KB |
Output is correct |
40 |
Correct |
1 ms |
604 KB |
Output is correct |
41 |
Correct |
1 ms |
604 KB |
Output is correct |
42 |
Correct |
1 ms |
604 KB |
Output is correct |
43 |
Correct |
1 ms |
640 KB |
Output is correct |
44 |
Correct |
1 ms |
604 KB |
Output is correct |
45 |
Correct |
1 ms |
604 KB |
Output is correct |
46 |
Correct |
1 ms |
468 KB |
Output is correct |
47 |
Correct |
1 ms |
604 KB |
Output is correct |
48 |
Correct |
1 ms |
604 KB |
Output is correct |
49 |
Correct |
1 ms |
604 KB |
Output is correct |
50 |
Correct |
1 ms |
604 KB |
Output is correct |
51 |
Correct |
1 ms |
604 KB |
Output is correct |
52 |
Correct |
1 ms |
604 KB |
Output is correct |
53 |
Correct |
1 ms |
600 KB |
Output is correct |
54 |
Correct |
1 ms |
604 KB |
Output is correct |
55 |
Correct |
1 ms |
604 KB |
Output is correct |
56 |
Correct |
1 ms |
600 KB |
Output is correct |
57 |
Correct |
1 ms |
860 KB |
Output is correct |
58 |
Correct |
1 ms |
604 KB |
Output is correct |
59 |
Correct |
1 ms |
604 KB |
Output is correct |
60 |
Correct |
1 ms |
600 KB |
Output is correct |
61 |
Correct |
1 ms |
604 KB |
Output is correct |
62 |
Correct |
1 ms |
604 KB |
Output is correct |
63 |
Correct |
1 ms |
604 KB |
Output is correct |
64 |
Correct |
70 ms |
16912 KB |
Output is correct |
65 |
Correct |
69 ms |
16952 KB |
Output is correct |
66 |
Correct |
91 ms |
16768 KB |
Output is correct |
67 |
Correct |
66 ms |
16784 KB |
Output is correct |
68 |
Correct |
65 ms |
16764 KB |
Output is correct |
69 |
Correct |
75 ms |
16916 KB |
Output is correct |
70 |
Correct |
67 ms |
16940 KB |
Output is correct |
71 |
Correct |
62 ms |
16800 KB |
Output is correct |
72 |
Correct |
71 ms |
16784 KB |
Output is correct |
73 |
Correct |
83 ms |
42128 KB |
Output is correct |
74 |
Correct |
89 ms |
42136 KB |
Output is correct |
75 |
Correct |
68 ms |
16788 KB |
Output is correct |
76 |
Correct |
67 ms |
16768 KB |
Output is correct |
77 |
Correct |
68 ms |
16788 KB |
Output is correct |
78 |
Correct |
72 ms |
16788 KB |
Output is correct |
79 |
Correct |
63 ms |
16800 KB |
Output is correct |
80 |
Correct |
68 ms |
16780 KB |
Output is correct |
81 |
Correct |
61 ms |
18376 KB |
Output is correct |
82 |
Correct |
61 ms |
17448 KB |
Output is correct |
83 |
Correct |
78 ms |
27880 KB |
Output is correct |
84 |
Correct |
74 ms |
32672 KB |
Output is correct |
85 |
Correct |
75 ms |
32032 KB |
Output is correct |
86 |
Correct |
71 ms |
19784 KB |
Output is correct |
87 |
Correct |
66 ms |
18436 KB |
Output is correct |
88 |
Correct |
66 ms |
18636 KB |
Output is correct |
89 |
Correct |
65 ms |
18844 KB |
Output is correct |
90 |
Correct |
66 ms |
18164 KB |
Output is correct |
91 |
Correct |
65 ms |
18844 KB |
Output is correct |
92 |
Correct |
66 ms |
19328 KB |
Output is correct |
93 |
Correct |
60 ms |
24996 KB |
Output is correct |
94 |
Correct |
73 ms |
28024 KB |
Output is correct |
95 |
Correct |
64 ms |
25676 KB |
Output is correct |
96 |
Correct |
67 ms |
21744 KB |
Output is correct |
97 |
Correct |
58 ms |
18412 KB |
Output is correct |
98 |
Correct |
67 ms |
17344 KB |
Output is correct |
99 |
Correct |
65 ms |
17040 KB |
Output is correct |
100 |
Correct |
88 ms |
23696 KB |
Output is correct |
101 |
Correct |
72 ms |
19480 KB |
Output is correct |
102 |
Correct |
60 ms |
18016 KB |
Output is correct |
103 |
Correct |
66 ms |
17448 KB |
Output is correct |
104 |
Correct |
60 ms |
20168 KB |
Output is correct |
105 |
Correct |
78 ms |
35764 KB |
Output is correct |
106 |
Correct |
44 ms |
19908 KB |
Output is correct |
107 |
Correct |
46 ms |
19908 KB |
Output is correct |
108 |
Correct |
84 ms |
43664 KB |
Output is correct |
109 |
Correct |
55 ms |
20148 KB |
Output is correct |
110 |
Correct |
111 ms |
44180 KB |
Output is correct |
111 |
Correct |
58 ms |
16800 KB |
Output is correct |