解题思路:
注意事项:
参考代码:
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner input = new Scanner(System.in);
int n = 3 * input.nextInt();
String[] s = new String[n];
for(int i = 0;i < n;i ++){
s[i] = input.next();
}
ttop(s,n);
}
public static void ttop(String[] s,int l){
int k = 0;
for(int i = 0; i < l;i = i + 3){
if(s[i + 2].equals("1")){
if(toin(s[i + 1]) >= 37.5){
System.out.println(s[i]);
k ++;
}
}
}
System.out.print(k);
}
public static double toin(String s){
double sum = 0;
for(int i = 0;i < s.length();i ++){
if(s.charAt(i) != '.')
sum = (s.charAt(i) - '0') + sum * 10;
else{
sum = sum + (s.charAt(i + 1) - '0') * 0.1;
break;
}
}
return sum;
}
}
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