Submission #914650

#	Time	Username	Problem	Language	Result	Execution time	Memory
914650		tosivanmak	Wiring (IOI17_wiring)	C++17	0 / 100	378 ms	82020 KiB

wiring

#include<bits/stdc++.h>
using namespace std;
#define ll long long

struct node{
    ll val;
    bool operator<(const node& n)const{
        return val>n.val;
    }
};
long long min_total_length(vector<int> r, vector<int> b) {
    r.insert(r.begin(), -1);
    b.insert(b.begin(),-1);
    vector<ll>adj[r.size()+5];
    ll n=r.size()-1,m=b.size()-1;
    set<ll>str,stb;
    set<node>sttr,sttb;
    map<ll,ll>mp;
    for(int i=1;i<=n;i++){
        str.insert(r[i]);
        sttr.insert({r[i]});
        mp[r[i]]=i;
    }
    for(int i=1;i<=m;i++){
        stb.insert(b[i]);
        sttb.insert({b[i]});
        mp[b[i]]=i;
    }
    str.insert(1000000000000000000);
    sttr.insert({-1000000000000000000});
    stb.insert(1000000000000000000);
    sttb.insert({-1000000000000000000});
    for(int i=1;i<=n;i++){
        ll lol=*stb.lower_bound(r[i]);
        node lol2=*sttb.lower_bound({r[i]});
        ll lol3=lol2.val;
        if(lol!=1000000000000000000){
            adj[i].push_back(mp[lol]);
        }
        if(lol3!=-1000000000000000000){
            adj[i].push_back(mp[lol3]);
        }
    }
    for(int i=1;i<=m;i++){
        ll lol=*str.lower_bound(b[i]);
        node lol2=*sttr.lower_bound({b[i]});
        ll lol3=lol2.val;
        if(lol!=1000000000000000000){
            adj[mp[lol]].push_back(i);
        }
        if(lol3!=-1000000000000000000){
            adj[mp[lol3]].push_back(i);
        }
    }
    for(int i=1;i<=n;i++){
        sort(adj[i].begin(),adj[i].end());
    }
    map<ll,ll>dp[n+5];
    for(int i=1;i<=n;i++){
        for(auto& u: adj[i]){
            dp[i][u]=1000000000000000000;
            dp[i-1][u]=1000000000000000000;
            dp[i][u-1]=1000000000000000000;
            dp[i-1][u-1]=1000000000000000000;
        }
    }
    // for(int i=1;i<=n;i++){
    //     for(auto& u: adj[i]){
    //         cout<<u<<" ";
    //     }
    //     cout<<'\n';
    // }
    dp[0][0]=0;
    for(int i=1;i<=n;i++){
        for(auto& u: adj[i]){
            // cout<<u<<" ";
                dp[i][u]=min({dp[i-1][u],dp[i][u-1],dp[i-1][u-1]})+abs(r[i]-b[u]);
        }
        // cout<<'\n';
    }
    return dp[n][m];
    // return 1;
}

#ifdef LOCAL
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);
    ll n,m;
    cin>>n>>m;
    vector<int>v,v2;
    for(int i=1;i<=n;i++){
       ll x;
       cin>>x;
       v.push_back(x);
    }
    for(int i=1;i<=m;i++){
        ll x;
        cin>>x;
        v2.push_back(x);
    }
    cout<<min_total_length(v,v2)<<'\n';
}
#endif

• Subtask 1: 0 / 7
• Subtask 2: 0 / 13
• Subtask 3: 0 / 10
• Subtask 4: 0 / 25
• Subtask 5: 0 / 45