Submission #827525

#	Time	Username	Problem	Language	Result	Execution time	Memory
827525		caganyanmaz	Roller Coaster Railroad (IOI16_railroad)	C++14	0 / 100	82 ms	15648 KiB

railroad

#include <bits/stdc++.h>
#define mp(x...) array<int, 2>({x})
#define pb push_back
#define int int64_t
#include "railroad.h"
using namespace std;

#ifdef DEBUGGING
#include "../debug.h"
#else
#define debug(x...) void(42)
#endif


long long plan_roller_coaster(vector<int32_t> s, vector<int32_t> t)
{
	int n = s.size();
	vector<array<int, 2>> vals;
	for (int i = 0; i < n; i++)
	{
		vals.pb({s[i], +1});
		vals.pb({t[i], -1});
	}
	sort(vals.begin(), vals.end());
	int pf = vals[0][1] - 1;
	int res = 0;
	for (int i = 1; i < vals.size(); i++)
	{
		debug(pf, vals[i-1][0], vals[i][0]);
		if ((pf == 0 && vals[i-1][0] != vals[0][0] && vals[i][0] != vals.back()[0]) || pf > 0)
			res += max<int>(pf, 1) * (vals[i][0] - vals[i-1][0]);
		pf += vals[i][1];
	}
	return res;
}

Compilation message (stderr)

railroad.cpp: In function 'long long int plan_roller_coaster(std::vector<int>, std::vector<int>)':
railroad.cpp:27:20: warning: comparison of integer expressions of different signedness: 'int64_t' {aka 'long int'} and 'std::vector<std::array<long int, 2> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |  for (int i = 1; i < vals.size(); i++)
      |                  ~~^~~~~~~~~~~~~

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