Submission #492053

#	Time	Username	Problem	Language	Result	Execution time	Memory
492053		Virv	Roller Coaster Railroad (IOI16_railroad)	C++17	0 / 100	43 ms	3524 KiB

railroad

#include <algorithm>
#include <iostream>
#include <set>
#include <vector>

#include "railroad.h"

long long plan_roller_coaster(std::vector<int> s, std::vector<int> t) {
	int M = 0;

	int a = 1e9;
	for (size_t i{}; i < s.size(); ++i) {
		M = std::max(M, t[i] - a);
		a = std::min(a, s[i]);
	}

	a = 1e9;
	for (size_t i = s.size(); i--;) {
		M = std::max(M, t[i] - a);
		a = std::min(a, s[i]);
	}

	long long R{};
	for (size_t i{}; i < s.size(); ++i) {
		auto x = std::max(0, t[i] - s[(i + 1) % s.size()]);
		R += x;
		// std::cerr << x << '\n';
	}
	// std::cerr << R << ' ' << M << '\n';
	return R - M;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 23
• Subtask 3: 0 / 30
• Subtask 4: 0 / 36