AOJ 0123 Speed Skating Badge Test

問題
http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=0123

解法
やらないだけ

#include <cstdio>
#include <algorithm>
using namespace std;

const double t500[7] =  {
35.50,37.50,40.00,43.00,50.00,55.00,70.00 };
const double t1000[7] = {
71.00,77.00,83.00,89.00,105.00,116.00,148.00};
const char rank[7][4] = {
"AAA", "AA", "A", "B", "C", "D", "E" };
int main(){
	double a, b;
	while(scanf("%lf %lf", &a, &b)!= EOF){
		bool f = false;
		for(int i = 0; i < 7; i++){
			if(a < t500[i] && b < t1000[i]){
				f = true;
				printf("%s\n", &rank[i][0]);
				break;
			}
		}
		if(!f) puts("NA");
	}
	return 0;
}