Submission #753885

#	Time	Username	Problem	Language	Result	Execution time	Memory
753885		valerikk	Wiring (IOI17_wiring)	C++17	0 / 100	1076 ms	5128 KiB

wiring

#include "wiring.h"
#include <bits/stdc++.h>

using namespace std;

const long long INF = 2e18;

long long getcost(vector<int> r, vector<int> b) {
	int n = r.size();
	int m = b.size();
	long long ret = 0;
	if (n < m) {
		for (int i = 0; i < n; ++i) {
			ret -= r[i];
		}
		ret -= (m - n) * 1ll * r[n - 1];
		for (int i = 0; i < m; ++i) {
			ret += b[i];
		}
	} else {
		for (int i = 0; i < n; ++i) {
			ret -= r[i];
		}
		ret += (n - m) * 1ll * b[0];
		for (int i = 0; i < m; ++i) {
			ret += b[i];
		}
	}
	return ret;
}

long long min_total_length(std::vector<int> r, std::vector<int> b) {
	int n = r.size();
	int m = b.size();
	vector<pair<int, int>> kek;
	for (int i = 0; i < n; ++i) {
		kek.push_back({r[i], 0});
	}
	for (int i = 0; i < m; ++i) {
		kek.push_back({b[i], 1});
	}
	sort(kek.begin(), kek.end());
	vector<long long> dp(n + m + 1, INF);
	dp[0] = 0;
	for (int i = 0; i < n + m; ++i) {
		bool was = 0;
		vector<int> r1, b1;
		for (int j = i; j < n + m; ++j) {
			if (was) {
				if (kek[j].second == kek[i].second) {
					break;
				}
			}
			if (kek[j].second == kek[i].second) {
				r1.push_back(kek[j].first);
			} else {
				was = 1;
				b1.push_back(kek[j].first);
			}
			if (was) {
				long long cost = getcost(r1, b1);
				dp[j + 1] = min(dp[j + 1], dp[i] + cost);
			}
		}
	}
	return dp[n + m];
}

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