Submission #757124

#	Time	Username	Problem	Language	Result	Execution time	Memory
757124		alexander707070	Wiring (IOI17_wiring)	C++14	20 / 100	26 ms	4300 KiB

wiring

#include<bits/stdc++.h>
#define MAXN 100007
using namespace std;
 
const long long inf=1e15;
 
int n,m;
int red[MAXN],blue[MAXN];
 
bool li[207][207];
long long dp[207][207],ans;
 
long long ff(int l,int r){
    if(l==n and r==m)return abs(red[l]-blue[r]);
 
    if(li[l][r])return dp[l][r];
    li[l][r]=true;
    dp[l][r]=inf;
 
    if(l<n)dp[l][r]=min(dp[l][r],ff(l+1,r));
    if(r<m)dp[l][r]=min(dp[l][r],ff(l,r+1));
    if(l<n and r<m)dp[l][r]=min(dp[l][r],ff(l+1,r+1));
 
    dp[l][r]+=abs(red[l]-blue[r]);
 
    return dp[l][r];
}
 
long long min_total_length(vector<int> R,vector<int> B){
 
    n=int(R.size()); m=int(B.size());
 
    for(int i=1;i<=n;i++)red[i]=R[i-1];
    for(int i=1;i<=m;i++)blue[i]=B[i-1];

    if(n<=200 and m<=200){
        return ff(1,1);
    }else{
        if(n<=m){
            for(int i=1;i<=n;i++){
                ans+=blue[i]-red[i];
            }
            for(int i=n+1;i<=m;i++){
                ans+=blue[i]-red[n];
            }
        }else{
            for(int i=m;i>=1;i--){
                ans+=blue[i]-red[n-(m-i)];
            }
            for(int i=n-m;i>=1;i--){
                ans+=blue[1]-red[i];
            }
        }
        return ans;
    }
}
 
/*
int main(){
    cout<<min_total_length({1, 2, 3, 7}, {0, 4, 5, 9, 10})<<"\n";
}
*/

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