Submission #1029983

#	Time	Username	Problem	Language	Result	Execution time	Memory
1029983		0pt1mus23	Džumbus (COCI19_dzumbus)	C++14	0 / 110	33 ms	20824 KiB

dzumbus

#pragma GCC optimize("O3", "inline")
#define skillissue <bits/stdc++.h>
#define ultra_mal std
#include skillissue
using namespace ultra_mal;
 
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
#define ins insert
#define pb push_back
#define int long long int
#define pii pair<int, int>
#define endl '\n' 
#define drop(x) cout<<(x)<<endl; return;
#define all(x) x.begin(),x.end()
#define hash FhashF
const int mod = 1e9 +7, sze = 1E3 +300, inf = LLONG_MAX, P = 1453;
// const int L = 30;
 
int val[sze];
vector<int> graph[sze];
int md =0;
int r =0;
void dfs(int node,int par=-1,int d=0){
    if(d>md){
        md=d;
        r=node;
    }
    for(auto v:graph[node]){
        if(v!=par){
            dfs(v,node,d+1);
        }
    }
}
vector<int> arr;
 
void fldfs(int node,int par=-1){
    arr.pb(val[node]);
    for(auto v:graph[node]){
        if(v!=par){
            fldfs(v,node);
        }
    }
}
 
int dp[sze][sze][2];
/*
    dp[i][0][x] = i-ci ni kullanmadan x sumuna gelende max cvb
    dp[i][1][x] = i-ci ni kullaninca x sumuna gelende max cvb
*/
int pref[sze];
int mxp[sze];
void cave(){
    int n,m;
    cin>>n>>m;
    
    arr.pb(0);// 1 indexed
 
    /*
        20 +30 : Tree , Chain
 
        N<=100 , O(n^4 ) ? O(n^3 * x ) ? x=1 ?
    */
    for(int i=1;i<=n;i++){
        cin>>val[i];
    }
    for(int i=0;i<m;i++){
        int u,v;
        cin>>u>>v;
        graph[u].pb(v);
        graph[v].pb(u);
    }
    dfs(1);
    // cout<<r<<endl;
    fldfs(r);
    // for(auto v:arr){
    //     cout<<v<<" ";
    // }
    // cout<<endl;
    // cout<<endl;
 
    int lim = 1111;
    for(int j=1;j<=n;j++){
        for(int i=0;i<=lim;i++){
            dp[j][i][1]=-inf;
        }
    }
 
    for(int i =2;i<=n;i++){
        for(int j=0;j<lim;j++){
            dp[i][j][0]=max(dp[i-1][j][0],dp[i-1][j][1]);
            dp[i][j][1]=-inf;
            if(arr[i]<=j){
                dp[i][j][1]=dp[i-1][j- arr[i-1]][1]+1;
            }
            if(arr[i]+arr[i-1]<=j){
                dp[i][j][1]=max(dp[i][j][1],dp[i-1][j-arr[i]-arr[i-1]][0]+2);
            }
        }
    }
    
    // for(int i=1;i<=10;i++){
    //     cout<<mxp[i]<<" ";
    // }
    // cout<<endl;
 
 
 
    int q;
    cin>>q;
    while(q--){
        int s;
        cin>>s;
        cout<<max(dp[n-1][s][0],dp[n-1][s][1])<<endl;
    }
}
 
signed main() {
    cin.tie(0)->sync_with_stdio(0);
    int tt = 1;
    // cin>>tt;
    
    // freopen(".in", "r", stdin);
    // freopen(".out", "w", stdout);
 
 
    while(tt--){
        cave();
    }
 
    return 0;
} 
 

• Subtask 1: 0 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 30
• Subtask 4: 0 / 30