#include <cstdio>
using namespace std;

inline int read()
{
	int s=0, f=1;
	char a=getchar();
	while(a>'9'|| a<'0')
	{
		if(a=='-') f=-1;
		a=getchar();
	}
	while(a<='9'&& a>='0')
	{
		s=((s<<3)+(s<<1))+a-'0';
		a=getchar();
	}
	return s*f;
}
int main()
{
	long long x, m, d = 0, dd = 0;
	for(int i = 1; i <= 7; i++)
	{
		x=read();
		m=read();
		if(x+m>=8&&x+m>dd)
		{
			dd = x+m;
			d = i;
		}
	}
	printf("%d",d);
	return 0;
}

最后一个样例不对，求助