oj.uz

답안 #1084347

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1084347 2024-09-06T03:05:38 Z Boycl07 Power Plant (JOI20_power) C++17
100 / 100
 81 ms 29584 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;

#define rep(i, n) for(int i = 1; (i) <= (n); ++i)
#define forn(i, l, r) for(int i = (l); i <= (r); ++i)
#define ford(i, r, l) for(int i = (r); i >= (l); --i)
#define FOR(i, n) for(int i = 0; i < (n); ++i)
#define FORD(i, n) for(int i = ((n) - 1); i >= 0; --i)
#define fi first
#define se second
#define pii pair<int, int>
#define pll pair<ll, ll>
#define pb push_back
#define endl "\n"
#define task "BAI1"
#define sz(a) int(a.size())
#define C(x, y) make_pair(x, y)
#define all(a) (a).begin(), (a).end()
#define bit(i, mask) (mask >> i & 1)

template<typename T> bool maximize(T &res, const T &val) { if (res < val){ res = val; return true; }; return false; }
template<typename T> bool minimize(T &res, const T &val) { if (res > val){ res = val; return true; }; return false; }

inline int readInt()       {char c;while(c=getchar(),c!='-'&&(c<'0'||c>'9'));bool sign=(c=='-');if(sign)c=getchar();int n=c-'0';while(c=getchar(),c>='0'&&c<='9')n=10*n+c-'0';return(!sign)?n:-n;}
inline ll readLong()       {char c;while(c=getchar(),c!='-'&&(c<'0'||c>'9'));bool sign=(c=='-');if(sign)c=getchar();ll  n=c-'0';while(c=getchar(),c>='0'&&c<='9')n=10*n+c-'0';return(!sign)?n:-n;}
inline string readString() {char c;while(c=getchar(),c==' '||c=='\n'||c=='\t');string s({c});while(c=getchar(),c!=EOF&&c!=' '&&c!='\n'&&c!='\t')s+=c;return s;}

const int N = 2e5 + 3;
const int M = 1e3 + 3;
const int LOG = 50;
const int MOD = 1e9 + 7;
const ll INF = 1e18;


int n;

vector<int> g[N];

string s;

int dp[N][2];

int res = 0;

void dfs(int u, int p)
{
    for(int v : g[u]) if(v != p)
    {
        dfs(v, u);
        maximize(dp[u][0], max(dp[v][0], dp[v][1]));
    }

    dp[u][1] = s[u - 1] - '0';
    int cur = -(s[u - 1] - '0');

    for(int v : g[u]) if(v != p)
        cur += max(0, dp[v][1]);
    int Max = 0;
    for(int v : g[u]) if(v != p) maximize(Max, dp[v][1]);




    maximize(dp[u][1], cur);

    maximize(res, dp[u][1]);
    maximize(res, Max + (s[u - 1] - '0'));
}

void solve()
{
    cin >> n;
    rep(i, n - 1)
    {
        int u, v;
        cin >> u >> v;
        g[u].pb(v);
        g[v].pb(u);
    }
    cin >> s;
    dfs(1, 1);
    cout << res;
}

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);

    int TC = 1;

    if(fopen("note.inp", "r"))
    {
        freopen("note.inp", "r", stdin);
        freopen("note.out", "w", stdout);
    }

    while(TC--)
    {
        solve();
        cout << endl;
    }

    return 0;
}

Compilation message

power.cpp: In function 'int main()':
power.cpp:97:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |         freopen("note.inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
power.cpp:98:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   98 |         freopen("note.out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 3 ms 4952 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 3 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 2 ms 4956 KB Output is correct
13 Correct 3 ms 4956 KB Output is correct
14 Correct 3 ms 5160 KB Output is correct
15 Correct 3 ms 4952 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 5208 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 2 ms 5152 KB Output is correct
21 Correct 2 ms 4952 KB Output is correct

Subtask #2
41.0 / 41.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 3 ms 4952 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 3 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 2 ms 4956 KB Output is correct
13 Correct 3 ms 4956 KB Output is correct
14 Correct 3 ms 5160 KB Output is correct
15 Correct 3 ms 4952 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 5208 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 2 ms 5152 KB Output is correct
21 Correct 2 ms 4952 KB Output is correct
22 Correct 3 ms 5212 KB Output is correct
23 Correct 3 ms 5212 KB Output is correct
24 Correct 3 ms 5208 KB Output is correct
25 Correct 3 ms 5212 KB Output is correct
26 Correct 3 ms 5212 KB Output is correct
27 Correct 3 ms 5232 KB Output is correct
28 Correct 3 ms 5212 KB Output is correct
29 Correct 3 ms 5212 KB Output is correct
30 Correct 3 ms 5212 KB Output is correct
31 Correct 2 ms 5212 KB Output is correct
32 Correct 2 ms 5212 KB Output is correct
33 Correct 3 ms 5212 KB Output is correct
34 Correct 3 ms 5208 KB Output is correct
35 Correct 3 ms 5172 KB Output is correct
36 Correct 3 ms 5464 KB Output is correct
37 Correct 2 ms 5176 KB Output is correct
38 Correct 2 ms 5208 KB Output is correct
39 Correct 2 ms 5212 KB Output is correct
40 Correct 3 ms 5168 KB Output is correct
41 Correct 3 ms 5208 KB Output is correct
42 Correct 3 ms 5212 KB Output is correct
43 Correct 3 ms 5212 KB Output is correct
44 Correct 3 ms 5208 KB Output is correct
45 Correct 3 ms 5212 KB Output is correct
46 Correct 3 ms 5212 KB Output is correct
47 Correct 3 ms 5212 KB Output is correct
48 Correct 3 ms 5212 KB Output is correct
49 Correct 3 ms 5212 KB Output is correct
50 Correct 3 ms 5216 KB Output is correct
51 Correct 3 ms 5252 KB Output is correct
52 Correct 3 ms 5212 KB Output is correct
53 Correct 3 ms 5212 KB Output is correct
54 Correct 3 ms 5212 KB Output is correct
55 Correct 2 ms 5212 KB Output is correct
56 Correct 2 ms 5212 KB Output is correct
57 Correct 3 ms 5212 KB Output is correct
58 Correct 5 ms 5212 KB Output is correct
59 Correct 3 ms 5464 KB Output is correct
60 Correct 4 ms 5212 KB Output is correct
61 Correct 2 ms 5212 KB Output is correct
62 Correct 2 ms 5212 KB Output is correct
63 Correct 3 ms 5208 KB Output is correct

Subtask #3
53.0 / 53.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 4952 KB Output is correct
2 Correct 3 ms 4952 KB Output is correct
3 Correct 2 ms 4956 KB Output is correct
4 Correct 2 ms 4956 KB Output is correct
5 Correct 2 ms 4956 KB Output is correct
6 Correct 2 ms 4956 KB Output is correct
7 Correct 2 ms 4956 KB Output is correct
8 Correct 2 ms 4956 KB Output is correct
9 Correct 2 ms 4956 KB Output is correct
10 Correct 3 ms 4956 KB Output is correct
11 Correct 2 ms 4956 KB Output is correct
12 Correct 2 ms 4956 KB Output is correct
13 Correct 3 ms 4956 KB Output is correct
14 Correct 3 ms 5160 KB Output is correct
15 Correct 3 ms 4952 KB Output is correct
16 Correct 3 ms 4956 KB Output is correct
17 Correct 2 ms 4956 KB Output is correct
18 Correct 2 ms 5208 KB Output is correct
19 Correct 2 ms 4956 KB Output is correct
20 Correct 2 ms 5152 KB Output is correct
21 Correct 2 ms 4952 KB Output is correct
22 Correct 3 ms 5212 KB Output is correct
23 Correct 3 ms 5212 KB Output is correct
24 Correct 3 ms 5208 KB Output is correct
25 Correct 3 ms 5212 KB Output is correct
26 Correct 3 ms 5212 KB Output is correct
27 Correct 3 ms 5232 KB Output is correct
28 Correct 3 ms 5212 KB Output is correct
29 Correct 3 ms 5212 KB Output is correct
30 Correct 3 ms 5212 KB Output is correct
31 Correct 2 ms 5212 KB Output is correct
32 Correct 2 ms 5212 KB Output is correct
33 Correct 3 ms 5212 KB Output is correct
34 Correct 3 ms 5208 KB Output is correct
35 Correct 3 ms 5172 KB Output is correct
36 Correct 3 ms 5464 KB Output is correct
37 Correct 2 ms 5176 KB Output is correct
38 Correct 2 ms 5208 KB Output is correct
39 Correct 2 ms 5212 KB Output is correct
40 Correct 3 ms 5168 KB Output is correct
41 Correct 3 ms 5208 KB Output is correct
42 Correct 3 ms 5212 KB Output is correct
43 Correct 3 ms 5212 KB Output is correct
44 Correct 3 ms 5208 KB Output is correct
45 Correct 3 ms 5212 KB Output is correct
46 Correct 3 ms 5212 KB Output is correct
47 Correct 3 ms 5212 KB Output is correct
48 Correct 3 ms 5212 KB Output is correct
49 Correct 3 ms 5212 KB Output is correct
50 Correct 3 ms 5216 KB Output is correct
51 Correct 3 ms 5252 KB Output is correct
52 Correct 3 ms 5212 KB Output is correct
53 Correct 3 ms 5212 KB Output is correct
54 Correct 3 ms 5212 KB Output is correct
55 Correct 2 ms 5212 KB Output is correct
56 Correct 2 ms 5212 KB Output is correct
57 Correct 3 ms 5212 KB Output is correct
58 Correct 5 ms 5212 KB Output is correct
59 Correct 3 ms 5464 KB Output is correct
60 Correct 4 ms 5212 KB Output is correct
61 Correct 2 ms 5212 KB Output is correct
62 Correct 2 ms 5212 KB Output is correct
63 Correct 3 ms 5208 KB Output is correct
64 Correct 69 ms 16024 KB Output is correct
65 Correct 65 ms 16092 KB Output is correct
66 Correct 60 ms 15980 KB Output is correct
67 Correct 66 ms 16016 KB Output is correct
68 Correct 68 ms 16004 KB Output is correct
69 Correct 69 ms 16024 KB Output is correct
70 Correct 62 ms 16032 KB Output is correct
71 Correct 60 ms 16032 KB Output is correct
72 Correct 70 ms 16016 KB Output is correct
73 Correct 70 ms 28564 KB Output is correct
74 Correct 76 ms 28668 KB Output is correct
75 Correct 61 ms 15820 KB Output is correct
76 Correct 61 ms 15768 KB Output is correct
77 Correct 73 ms 16176 KB Output is correct
78 Correct 67 ms 15984 KB Output is correct
79 Correct 63 ms 15824 KB Output is correct
80 Correct 60 ms 15860 KB Output is correct
81 Correct 52 ms 16332 KB Output is correct
82 Correct 69 ms 16204 KB Output is correct
83 Correct 66 ms 21144 KB Output is correct
84 Correct 79 ms 23204 KB Output is correct
85 Correct 72 ms 22944 KB Output is correct
86 Correct 65 ms 17300 KB Output is correct
87 Correct 71 ms 16780 KB Output is correct
88 Correct 62 ms 17100 KB Output is correct
89 Correct 63 ms 17312 KB Output is correct
90 Correct 67 ms 17136 KB Output is correct
91 Correct 66 ms 17304 KB Output is correct
92 Correct 60 ms 17496 KB Output is correct
93 Correct 66 ms 20056 KB Output is correct
94 Correct 60 ms 21704 KB Output is correct
95 Correct 58 ms 20300 KB Output is correct
96 Correct 59 ms 18680 KB Output is correct
97 Correct 68 ms 17132 KB Output is correct
98 Correct 60 ms 16576 KB Output is correct
99 Correct 60 ms 16296 KB Output is correct
100 Correct 66 ms 19584 KB Output is correct
101 Correct 61 ms 17420 KB Output is correct
102 Correct 56 ms 16736 KB Output is correct
103 Correct 59 ms 16564 KB Output is correct
104 Correct 39 ms 16840 KB Output is correct
105 Correct 72 ms 25412 KB Output is correct
106 Correct 42 ms 16848 KB Output is correct
107 Correct 42 ms 16736 KB Output is correct
108 Correct 81 ms 29356 KB Output is correct
109 Correct 41 ms 16840 KB Output is correct
110 Correct 78 ms 29584 KB Output is correct
111 Correct 55 ms 15776 KB Output is correct