/*

DAVOR JURISIC

SENIOR DIVISION

CONTEST #1

XV GIMANZIJA

CODE 7076

*/

#define RPC 1

#define LPC 2

#define ENV 3

#define LENV 4

#define PAC 5

#define LPAC 6

#include <iostream>

#include <cstdio>

float cost[] = {0, 0.20, 0.37, 0.37, 0.6, 2.95, 3.95};

float per_zone[] = {0, 0.03, 0.03, 0.04, 0.05, 0.25, 0.35};

using namespace std;

int postageClass( float l, float h, float t )

{

if( ( l >= 3.5 && l <= 4.25 ) && ( h >= 3.5 && h <= 6 ) && ( t >= 0.007 && t <= 0.016 ) ) return RPC;

else if( ( l > 4.25 && l <= 6 ) && ( h > 6 && h <= 11.5 ) && ( t >= 0.007 && t <= 0.016 ) ) return LPC;

else if( ( l >= 3.5 && l <= 6.125 ) && ( h >= 5 && h <= 11.5 ) && ( t > 0.016 && t <= 0.25 ) ) return ENV;

else if( ( l > 6.125 && l <= 24 ) && ( h >= 11 && h <= 18 ) && ( t >= 0.25 && t <= 0.5 ) ) return LENV;

else if( ( l > 24 ) && ( h > 18 ) && ( t > 0.5) && ( l + 2 * h + 2 * t <= 84) ) return PAC;

else if( ( l + 2 * h + 2 * t > 84) && ( l + 2 * h + 2 * t <= 130 ) ) return LPAC;

else return -1;

}

int zone( int zo )

{

if( zo >= 1 && zo <= 6999) return 1;

else if( zo >= 7000 && zo <= 19999) return 2;

else if( zo >= 20000 && zo <= 35999) return 3;

else if( zo >= 36000 && zo <= 62999) return 4;

else if( zo >= 63000 && zo <= 84999) return 5;

else return 6;

}

int main()

{

float l,h,t;

int sz,ez;

int pclass, razzone;

float rez;

for(int i = 0; i < 5; i++){

rez = 0;

cin >> l >> h >> t >> sz >> ez;

pclass = postageClass( l, h, t );

if( pclass < 0){

cout << "UNMAILABLE" << endl;

continue;

}

rez += cost[ pclass ];

razzone = abs( zone( sz ) - zone( ez ));

rez += razzone * per_zone[ pclass ];

printf("%.2f\n", rez);

}

return 0;

}