AdventOfCode2021/01/main2.cpp

#include "main.h"

int main(int argc, char **argv){
	QFile input("input.txt");
	if(!input.open(QIODevice::ReadOnly | QIODevice::Text)){
		qDebug() << "file borked";
		return 1;
	}

	QTextStream strm(&input);
	int cnt = 0;
	int last = 0;
	int act = 0;
	int actsum = 0;
	int cntHigher = 0;
	int sum1 = 0;
	int sum2 = 0;
	int sum3 = 0;
	int mod = 0;
	while(!strm.atEnd()){
		act = strm.readLine().toInt();
		cnt++;

		sum1 += act;
		sum2 += act;
		sum3 += act;
		mod = cnt % 3;
		switch(mod){
			case 0:
				last = actsum;
				actsum = sum1;
				sum1 = 0;
				break;
			case 1:
				last = actsum;
				actsum = sum2;
				sum2 = 0;
				break;
			case 2:
				last = actsum;
				actsum = sum3;
				sum3 = 0;
				break;
		}

		if (cnt <= 3)
			continue;
		if(actsum > last){
			cntHigher++;
		}

	}
	qDebug() << cntHigher;
}