Aizu Online Judge 0135 Clock Short Hand and Long Hand

■0135 Clock Short Hand and Long Hand

時計の長針・短針の角度をそれぞれ360°に直すだけ．

import java.util.*;
import java.lang.*;
import java.math.*;
import java.io.*;

import static java.lang.Math.*;
import static java.util.Arrays.*;

public class Main{

 Scanner sc=new Scanner(System.in);

 int INF=1<<28;
 double EPS=1e-9;

 void run(){
  int n=sc.nextInt();
  sc.useDelimiter("(\\s)+|[:]");
  for(int i=0; i<n; i++){
   double h=sc.nextInt()*30;
   double m=sc.nextInt()*6;
   h+=m/12;
   double d=Math.abs(h-m);
   d=Math.min(d, 360-d);
   if(d+EPS<30){
    println("alert");
   }else if(d+EPS>=90&&d<=180+EPS){
    println("safe");
   }else{
    println("warning");
   }
  }
 }

 void debug(Object... os){
  System.err.println(Arrays.deepToString(os));
 }

 void print(String s){
  System.out.print(s);
 }

 void println(String s){
  System.out.println(s);
 }

 public static void main(String[] args){
  // System.setOut(new PrintStream(new BufferedOutputStream(System.out)));
  new Main().run();
 }
}