Submission #298222

#	Time	Username	Problem	Language	Result	Execution time	Memory
298222		dantoh000	Wiring (IOI17_wiring)	C++14	0 / 100	1 ms	384 KiB

wiring

#include <bits/stdc++.h>
#define fi first
#define se second
using namespace std;
typedef long long ll;
typedef pair<int,int> ii;
const ll INF = 1000000000000000000;
//#include "wiring.h"
ll dp[200005];
ll p[200005];
int last[200005];
vector<ii> v;
ll min_total_length(vector<int> r, vector<int> b) {
    int nr = r.size(), nb = b.size();
    int n = nr+nb;
    for (auto x: r) v.push_back({x,0});
    for (auto x: b) v.push_back({x,1});
    sort(v.begin(),v.end());
    last[0] = -1;
    dp[0] = 0;
    p[0] = v[0].fi;
    for (int i = 1; i < n; i++){
        dp[i] = INF;
        last[i] = (v[i].se == v[i-1].se) ? last[i-1] : i-1;
        p[i] = p[i-1] + v[i].fi;
        if (last[i] == -1) continue;
        dp[i] = dp[i-1] + v[i].fi - v[last[i]].fi;
        int pos = last[i]-(i-last[i]);
        if (last[last[i]] <= pos){
            dp[i] = min(dp[i],dp[pos]+p[i]-p[last[i]]-(p[last[i]]-p[pos]));
        }
        //printf("%d ",dp[i]);
    }
	return dp[n-1];
}

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