Submission #536357

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
536357	2022-03-13 03:45:52	Monarchuwu	Power Plant (JOI20_power)	C++17	100 / 100	177 ms	34808 KiB

power

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#include<iostream>
#include<algorithm>
#include<vector>
using namespace std;
typedef long long ll;
const int N = 2e5 + 8;
int n, a[N];
char s[N];
vector<int> g[N];
void upd(int &a, int b) { if (a < b) a = b; }
int dp[N], cnt[N][3], tmp[4];
int ans;
void dfs(int u, int p) {
    for (int v : g[u]) if (v != p) {
        dfs(v, u);
        if (u == 2) {
            int bug = 1;
        }
        fill(tmp, tmp + 4, 0);
        for (int i = 0; i < 3; ++i)
            upd(tmp[i + 1], cnt[u][i] + dp[v]);
        upd(cnt[u][1], tmp[1]);
        upd(cnt[u][2], tmp[2]);
        upd(cnt[u][2], tmp[3]);
    }
 
 
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Compilation message (stderr)

power.cpp: In function 'void dfs(int, int)':
power.cpp:20:17: warning: unused variable 'bug' [-Wunused-variable]
   20 |             int bug = 1;
      |                 ^~~

• Subtask 1: 6 / 6
• Subtask 2: 41 / 41
• Subtask 3: 53 / 53