#include <iostream>
#include <fstream>
#include <string>
#include <vector>


int main()
{
std::ifstream inputFile("../input/01.txt");
std::string input;
std::vector<int> values;
   
while(std::getline(inputFile, input))
{
  values.push_back(std::stoi(input));
}

inputFile.close();


int increases = 0;
for(auto i = 0; i < values.size() - 1; i++)
{
  increases += 1 * (values[i] < values[i+1]);
}

std::cout << increases << std::endl;

return 0;
}