aoc-2021/1/1a.cpp

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#include <fstream>
#include <climits>
#include <iostream>
int main() {
std::ifstream infile("input.txt");
unsigned int curr, prev = UINT_MAX;
unsigned int increases = 0;
while (infile >> curr) {
if (curr > prev) ++increases;
prev = curr;
}
std::cout << increases << std::endl;
return 0;
}