제출 #914565

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
914565	2024-01-22 10:45:17	qin	Power Plant (JOI20_power)	C++17	100 / 100	137 ms	23860 KiB

power

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#include <bits/stdc++.h>
#define fi first
#define se second
#define ssize(x) int(x.size())
#define pn printf("\n");
#define all(x) x.begin(),x.end()
#define rall(x) x.rbegin(),x.rend()
#define vv vector
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
int inf = 2e09; ll infll = 2e18; int mod = 119<<23|1;
struct graph{
    vector<vector<int>> g;
    vector<int> dp, pp;
    void init(int n){
        g.resize(n+1), dp.resize(n+1), pp.resize(n+1);
    }
    void add_edge(int a, int b){ g[a].emplace_back(b), g[b].emplace_back(a); }
    int result = 0;
    void dfs(int x, int par){
        int sum = 0;
        for(int u : g[x]) if(u != par) dfs(u, x), sum += dp[u];
        if(!pp[x]){ dp[x] = max(sum, 0), result = max(result, dp[x]); return; }
        for(int u : g[x]) result = max(result, dp[u]+1);
        dp[x] = max(sum-1, 1), result = max(result, dp[x]);
    }
};
void answer(){
    int n; scanf("%d", &n);
 
 
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컴파일 시 표준 에러 (stderr) 메시지

power.cpp: In function 'void answer()':
power.cpp:30:15: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   30 |   int n; scanf("%d", &n);
      |          ~~~~~^~~~~~~~~~
power.cpp:33:20: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   33 |     int a, b; scanf("%d%d", &a, &b);
      |               ~~~~~^~~~~~~~~~~~~~~~

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