Submission #1238526

#	Time	Username	Problem	Language	Result	Execution time	Memory
1238526		mychecksedad	Wiring (IOI17_wiring)	C++20	7 / 100	15 ms	4168 KiB

wiring

#include "wiring.h"
#include<bits/stdc++.h>
using namespace std;
#define pii pair<int,int>
#define pb push_back
#define ff first
#define ss second
#define vi vector<int>
#define ll long long int
#define all(x) x.begin(),x.end()
const int N = 250;

ll dp[N][N];
long long min_total_length(std::vector<int> R, std::vector<int> B) {
	vector<ll> r(all(R));
	vector<ll> b(all(B));
	int n = r.size();
	int m = b.size();
	for(int i = 0; i <= n; ++i) for(int j = 0; j <= m; ++j) dp[i][j] = 1e18;
	dp[0][0] = 0;
	vector<ll> C(n);
	vector<ll> D(m);
	for(int i = 0; i < n; ++i){
		int pos = lower_bound(all(b), r[i]) - b.begin();
		if(pos == m) --pos;
		ll mn = abs(b[pos] - r[i]);
		if(pos>0) mn = min(mn, abs(b[pos-1] - r[i]));
		C[i] = mn;
	}
	swap(n, m);
	swap(C, D);
	swap(r, b);
	for(int i = 0; i < n; ++i){
		int pos = lower_bound(all(b), r[i]) - b.begin();
		if(pos == m) --pos;
		ll mn = abs(b[pos] - r[i]);
		if(pos>0) mn = min(mn, abs(b[pos-1] - r[i]));
		C[i] = mn;
	}
	swap(n, m);
	swap(C, D);
	swap(r, b);

	for(int i = 0; i <= n; ++i){
		for(int j = 0; j <= m; ++j){
			if(i+j==0) continue;
			if(i==0){
				dp[i][j] = dp[i][j-1] + D[j-1];
			}else if(j==0){
				dp[i][j] = dp[i-1][j] + C[i-1];
			}else{
				dp[i][j] = min({
					dp[i - 1][j - 1] + abs(r[i-1]-b[j-1]),
					dp[i][j - 1] + D[j-1],
					dp[i - 1][j] + C[i-1]
				});
			}
		}
	}


	return dp[n][m];
}

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