백준 2460 c++

머리가 안 돌아가서 문제다.

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

using namespace std;

void input_train()
{
	int i;
	int max = 0;
	int A, B;
	int current = 0;

	for (i = 0; i < 10; i++)
	{
		cin >> A >> B;
		current -= A;
		current += B;
		if (current > max)
		{
			max = current;
		}
	}
	cout << max << "\n";

	return;
}

int main(void)
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	input_train();

	return 0;
}