Aizu Online Judge 0106 Discounts of Buckwheat

■0106 Discounts of Buckwheat

入力の範囲が狭い(46通り)ので，全入力に対する解を予め全探索で求めておく．

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[] a=new int[51];
  Arrays.fill(a, INF);
  for(int k=0; toGramme(0, 0, k)<=50; k++){
   for(int j=0; toGramme(0, j, k)<=50; j++){
    for(int i=0; toGramme(i, j, k)<=50; i++){
     int g=toGramme(i, j, k);
     a[g]=Math.min(a[g], toMoney(i, j, k));
    }
   }
  }
  for(;;){
   int g=sc.nextInt()/100;
   if(g==0){
    break;
   }
   println(a[g]+"");
  }
 }

 int toGramme(int i, int j, int k){
  return i*2+j*3+k*5;
 }

 int toMoney(int i, int j, int k){
  int sum=0;
  sum+=380*(i-i%5)*80/100+380*(i%5);
  sum+=550*(j-j%4)*85/100+550*(j%4);
  sum+=850*(k-k%3)*88/100+850*(k%3);
  return sum;
 }

 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();
 }
}