oj.uz

답안 #401093

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
401093 2021-05-09T10:54:12 Z cpp219 Power Plant (JOI20_power) C++14
100 / 100
 167 ms 27520 KB 
#pragma GCC optimization "O2"
#pragma GCC optimization "unroll-loop"
#pragma GCC target ("avx2")

#include <bits/stdc++.h>
#define ll int
#define ld long double
#define fs first
#define sc second
using namespace std;
const ll N = 2e5 + 6;
const ll Log2 = 19;
const ll inf = 1e9 + 7;
typedef pair<ll,ll> LL;
string s;
ll n,x,y,a[N],mx[N],ans = 1;
vector<ll> g[N];

void DFS(ll u,ll p){
    mx[u] = a[u];
    for (auto i : g[u]) if (i != p) DFS(i,u);
    ll cur = -a[u],mxchild = 0;
    for (auto i : g[u]) if (mx[i] > 0 && i != p)
        cur += mx[i],mxchild = max(mxchild,mx[i]);
    mx[u] = max(mx[u],cur);
    ans = max(ans,max(mx[u],mxchild + a[u]));
}

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    #define task "tst"
    if (fopen(task".inp", "r")){
        freopen(task".inp", "r", stdin);
        //freopen(task".out", "w", stdout);
    }
    cin>>n;
    for (ll i = 1;i < n;i++){
        cin>>x>>y;
        g[x].push_back(y); g[y].push_back(x);
    }
    cin>>s;
    for (ll i = 0;i < n;i++) a[i + 1] = s[i] - '0'; DFS(1,0);
    //cout<<mx[3]; return 0;
    cout<<ans;
}

Compilation message

power.cpp:1: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    1 | #pragma GCC optimization "O2"
      | 
power.cpp:2: warning: ignoring #pragma GCC optimization [-Wunknown-pragmas]
    2 | #pragma GCC optimization "unroll-loop"
      | 
power.cpp: In function 'int main()':
power.cpp:43:5: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
   43 |     for (ll i = 0;i < n;i++) a[i + 1] = s[i] - '0'; DFS(1,0);
      |     ^~~
power.cpp:43:53: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
   43 |     for (ll i = 0;i < n;i++) a[i + 1] = s[i] - '0'; DFS(1,0);
      |                                                     ^~~
power.cpp:34:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   34 |         freopen(task".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 5028 KB Output is correct
3 Correct 3 ms 5028 KB Output is correct
4 Correct 4 ms 4940 KB Output is correct
5 Correct 3 ms 5020 KB Output is correct
6 Correct 4 ms 4940 KB Output is correct
7 Correct 4 ms 4940 KB Output is correct
8 Correct 4 ms 5024 KB Output is correct
9 Correct 4 ms 5024 KB Output is correct
10 Correct 4 ms 5020 KB Output is correct
11 Correct 4 ms 4940 KB Output is correct
12 Correct 4 ms 5024 KB Output is correct
13 Correct 4 ms 4940 KB Output is correct
14 Correct 4 ms 4944 KB Output is correct
15 Correct 3 ms 5016 KB Output is correct
16 Correct 4 ms 4940 KB Output is correct
17 Correct 4 ms 4940 KB Output is correct
18 Correct 4 ms 5060 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 4 ms 4940 KB Output is correct
21 Correct 4 ms 5028 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 5028 KB Output is correct
3 Correct 3 ms 5028 KB Output is correct
4 Correct 4 ms 4940 KB Output is correct
5 Correct 3 ms 5020 KB Output is correct
6 Correct 4 ms 4940 KB Output is correct
7 Correct 4 ms 4940 KB Output is correct
8 Correct 4 ms 5024 KB Output is correct
9 Correct 4 ms 5024 KB Output is correct
10 Correct 4 ms 5020 KB Output is correct
11 Correct 4 ms 4940 KB Output is correct
12 Correct 4 ms 5024 KB Output is correct
13 Correct 4 ms 4940 KB Output is correct
14 Correct 4 ms 4944 KB Output is correct
15 Correct 3 ms 5016 KB Output is correct
16 Correct 4 ms 4940 KB Output is correct
17 Correct 4 ms 4940 KB Output is correct
18 Correct 4 ms 5060 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 4 ms 4940 KB Output is correct
21 Correct 4 ms 5028 KB Output is correct
22 Correct 4 ms 5068 KB Output is correct
23 Correct 4 ms 5068 KB Output is correct
24 Correct 5 ms 5108 KB Output is correct
25 Correct 4 ms 5068 KB Output is correct
26 Correct 5 ms 5032 KB Output is correct
27 Correct 5 ms 5104 KB Output is correct
28 Correct 5 ms 5176 KB Output is correct
29 Correct 4 ms 5196 KB Output is correct
30 Correct 4 ms 5196 KB Output is correct
31 Correct 4 ms 5068 KB Output is correct
32 Correct 4 ms 5040 KB Output is correct
33 Correct 5 ms 5068 KB Output is correct
34 Correct 5 ms 5040 KB Output is correct
35 Correct 4 ms 5068 KB Output is correct
36 Correct 4 ms 5068 KB Output is correct
37 Correct 4 ms 5068 KB Output is correct
38 Correct 4 ms 5068 KB Output is correct
39 Correct 4 ms 5164 KB Output is correct
40 Correct 4 ms 5068 KB Output is correct
41 Correct 4 ms 5164 KB Output is correct
42 Correct 4 ms 5068 KB Output is correct
43 Correct 5 ms 5068 KB Output is correct
44 Correct 5 ms 5112 KB Output is correct
45 Correct 4 ms 5164 KB Output is correct
46 Correct 5 ms 5068 KB Output is correct
47 Correct 4 ms 5068 KB Output is correct
48 Correct 4 ms 5196 KB Output is correct
49 Correct 4 ms 5196 KB Output is correct
50 Correct 4 ms 5068 KB Output is correct
51 Correct 4 ms 5068 KB Output is correct
52 Correct 4 ms 5068 KB Output is correct
53 Correct 4 ms 5072 KB Output is correct
54 Correct 4 ms 5068 KB Output is correct
55 Correct 5 ms 5068 KB Output is correct
56 Correct 4 ms 5068 KB Output is correct
57 Correct 4 ms 5168 KB Output is correct
58 Correct 4 ms 5032 KB Output is correct
59 Correct 4 ms 5068 KB Output is correct
60 Correct 5 ms 5168 KB Output is correct
61 Correct 4 ms 5072 KB Output is correct
62 Correct 5 ms 5168 KB Output is correct
63 Correct 4 ms 5044 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 4940 KB Output is correct
2 Correct 4 ms 5028 KB Output is correct
3 Correct 3 ms 5028 KB Output is correct
4 Correct 4 ms 4940 KB Output is correct
5 Correct 3 ms 5020 KB Output is correct
6 Correct 4 ms 4940 KB Output is correct
7 Correct 4 ms 4940 KB Output is correct
8 Correct 4 ms 5024 KB Output is correct
9 Correct 4 ms 5024 KB Output is correct
10 Correct 4 ms 5020 KB Output is correct
11 Correct 4 ms 4940 KB Output is correct
12 Correct 4 ms 5024 KB Output is correct
13 Correct 4 ms 4940 KB Output is correct
14 Correct 4 ms 4944 KB Output is correct
15 Correct 3 ms 5016 KB Output is correct
16 Correct 4 ms 4940 KB Output is correct
17 Correct 4 ms 4940 KB Output is correct
18 Correct 4 ms 5060 KB Output is correct
19 Correct 4 ms 4992 KB Output is correct
20 Correct 4 ms 4940 KB Output is correct
21 Correct 4 ms 5028 KB Output is correct
22 Correct 4 ms 5068 KB Output is correct
23 Correct 4 ms 5068 KB Output is correct
24 Correct 5 ms 5108 KB Output is correct
25 Correct 4 ms 5068 KB Output is correct
26 Correct 5 ms 5032 KB Output is correct
27 Correct 5 ms 5104 KB Output is correct
28 Correct 5 ms 5176 KB Output is correct
29 Correct 4 ms 5196 KB Output is correct
30 Correct 4 ms 5196 KB Output is correct
31 Correct 4 ms 5068 KB Output is correct
32 Correct 4 ms 5040 KB Output is correct
33 Correct 5 ms 5068 KB Output is correct
34 Correct 5 ms 5040 KB Output is correct
35 Correct 4 ms 5068 KB Output is correct
36 Correct 4 ms 5068 KB Output is correct
37 Correct 4 ms 5068 KB Output is correct
38 Correct 4 ms 5068 KB Output is correct
39 Correct 4 ms 5164 KB Output is correct
40 Correct 4 ms 5068 KB Output is correct
41 Correct 4 ms 5164 KB Output is correct
42 Correct 4 ms 5068 KB Output is correct
43 Correct 5 ms 5068 KB Output is correct
44 Correct 5 ms 5112 KB Output is correct
45 Correct 4 ms 5164 KB Output is correct
46 Correct 5 ms 5068 KB Output is correct
47 Correct 4 ms 5068 KB Output is correct
48 Correct 4 ms 5196 KB Output is correct
49 Correct 4 ms 5196 KB Output is correct
50 Correct 4 ms 5068 KB Output is correct
51 Correct 4 ms 5068 KB Output is correct
52 Correct 4 ms 5068 KB Output is correct
53 Correct 4 ms 5072 KB Output is correct
54 Correct 4 ms 5068 KB Output is correct
55 Correct 5 ms 5068 KB Output is correct
56 Correct 4 ms 5068 KB Output is correct
57 Correct 4 ms 5168 KB Output is correct
58 Correct 4 ms 5032 KB Output is correct
59 Correct 4 ms 5068 KB Output is correct
60 Correct 5 ms 5168 KB Output is correct
61 Correct 4 ms 5072 KB Output is correct
62 Correct 5 ms 5168 KB Output is correct
63 Correct 4 ms 5044 KB Output is correct
64 Correct 137 ms 13808 KB Output is correct
65 Correct 137 ms 13708 KB Output is correct
66 Correct 131 ms 13736 KB Output is correct
67 Correct 137 ms 13672 KB Output is correct
68 Correct 141 ms 13740 KB Output is correct
69 Correct 133 ms 13696 KB Output is correct
70 Correct 141 ms 13704 KB Output is correct
71 Correct 136 ms 13716 KB Output is correct
72 Correct 132 ms 13696 KB Output is correct
73 Correct 155 ms 26340 KB Output is correct
74 Correct 153 ms 26232 KB Output is correct
75 Correct 134 ms 13620 KB Output is correct
76 Correct 125 ms 13592 KB Output is correct
77 Correct 137 ms 13568 KB Output is correct
78 Correct 143 ms 13656 KB Output is correct
79 Correct 137 ms 13540 KB Output is correct
80 Correct 138 ms 13600 KB Output is correct
81 Correct 115 ms 14136 KB Output is correct
82 Correct 150 ms 13896 KB Output is correct
83 Correct 148 ms 18828 KB Output is correct
84 Correct 148 ms 21008 KB Output is correct
85 Correct 145 ms 20688 KB Output is correct
86 Correct 137 ms 15108 KB Output is correct
87 Correct 145 ms 14532 KB Output is correct
88 Correct 128 ms 14968 KB Output is correct
89 Correct 126 ms 14992 KB Output is correct
90 Correct 138 ms 14704 KB Output is correct
91 Correct 137 ms 15032 KB Output is correct
92 Correct 138 ms 15260 KB Output is correct
93 Correct 130 ms 17748 KB Output is correct
94 Correct 133 ms 19488 KB Output is correct
95 Correct 129 ms 18140 KB Output is correct
96 Correct 126 ms 16236 KB Output is correct
97 Correct 127 ms 14824 KB Output is correct
98 Correct 131 ms 14344 KB Output is correct
99 Correct 128 ms 14080 KB Output is correct
100 Correct 130 ms 17264 KB Output is correct
101 Correct 130 ms 15228 KB Output is correct
102 Correct 130 ms 14588 KB Output is correct
103 Correct 130 ms 14308 KB Output is correct
104 Correct 89 ms 14448 KB Output is correct
105 Correct 156 ms 23088 KB Output is correct
106 Correct 91 ms 14616 KB Output is correct
107 Correct 85 ms 14520 KB Output is correct
108 Correct 158 ms 27064 KB Output is correct
109 Correct 85 ms 14516 KB Output is correct
110 Correct 167 ms 27520 KB Output is correct
111 Correct 126 ms 13588 KB Output is correct