제출 #481421

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
481421		Edbert2397	Biochips (IZhO12_biochips)	C++14	0 / 100	5 ms	9676 KiB

biochips

# include <bits/stdc++.h>
using namespace std;
#define pb push_back
#define mp make_pair
#define fi first
#define se second
typedef long long ll;
#define pii pair<int,int>
#define debug(x) cout << #x << '=' << x << endl;
const int N = 2e5 + 5;
const int INF = 1e9;
const ll mod = 1e9+7;
int n,m,x[N],now,sz,dp[N][505],z,nilai[N][105],subtree[N],in[N],out[N],cnt;
vector<int >v[N];
vector<pii >vec[N];
void dfs(int idx){
    in[idx] = ++cnt;
    for(auto isi : v[idx]){
        dfs(isi);
    }
    out[idx] = cnt;
} 
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    //freopen(,r,stdin);
    //freopen(,w,stdout);
    cin>>n>>m;
    for(int i = 1;i<=n;i++){
        int p;
        cin>>p>>x[i];
        v[p].pb(i);
    }
    dfs(0); 
    for(int i = 1;i<=n;i++){
        vec[out[i]].pb({in[i],x[i]});
    }
    for(int i = 0;i<=n;i++){
        for(int j = 1;j<=m;j++){
            dp[i][i] = -INF;

        }
    }
    for(int i = 1;i<=n;i++){
        for(int j = 1;j<=m;j++){
            dp[i][j] = dp[i-1][j];
            for(auto isi : vec[i]){
                dp[i][j] = max(dp[i][j],dp[isi.fi-1][j-1] + isi.se);
            }
        }

    }
    
    cout<<dp[n][m]<<endl;
}

• Subtask 1: 0 / 100