import sys
import math
import itertools
import collections
import heapq
import re
import numpy as np

rr = lambda: sys.stdin.readline().rstrip()
rs = lambda: sys.stdin.readline().split()
ri = lambda: int(sys.stdin.readline())
rm = lambda: map(int, sys.stdin.readline().split())
rl = lambda: list(map(int, sys.stdin.readline().split()))
inf = float('inf')
mod = 10**9 + 7

n = ri()
ans = 0
for _ in range(n):
  a, b = rs()
  if b == 'JPY':
    ans += float(a)
  else:
    ans += float(a)*380000
print(ans)
  
    







 import sys sys import math math import itertools itertools import collections collections import heapq heapq import re re import numpy as np numpy rr = lambda: sys.stdin.readline().rstrip() rr lambda: sys.stdin.readline().rstrip() sys.stdin.readline().rstrip() sys.stdin.readline().rstrip sys.stdin.readline() sys.stdin.readline sys.stdin sys stdin readline rstrip rs = lambda: sys.stdin.readline().split() rs lambda: sys.stdin.readline().split() sys.stdin.readline().split() sys.stdin.readline().split sys.stdin.readline() sys.stdin.readline sys.stdin sys stdin readline split ri = lambda: int(sys.stdin.readline()) ri lambda: int(sys.stdin.readline()) int(sys.stdin.readline()) int sys.stdin.readline() sys.stdin.readline sys.stdin sys stdin readline rm = lambda: map(int, sys.stdin.readline().split()) rm lambda: map(int, sys.stdin.readline().split()) map(int, sys.stdin.readline().split()) map int sys.stdin.readline().split() sys.stdin.readline().split sys.stdin.readline() sys.stdin.readline sys.stdin sys stdin readline split rl = lambda: list(map(int, sys.stdin.readline().split())) rl lambda: list(map(int, sys.stdin.readline().split())) list(map(int, sys.stdin.readline().split())) list map(int, sys.stdin.readline().split()) map int sys.stdin.readline().split() sys.stdin.readline().split sys.stdin.readline() sys.stdin.readline sys.stdin sys stdin readline split inf = float('inf') inf float('inf') float 'inf' mod = 10**9 + 7 mod 10**9 + 7 10**9 10 9 7 n = ri() n ri() ri ans = 0 ans 0 for _ in range(n):
  a, b = rs()
  if b == 'JPY':
    ans += float(a)
  else:
    ans += float(a)*380000 _ range(n) range n a, b = rs() a rs() rs b if b == 'JPY':
    ans += float(a)
  else:
    ans += float(a)*380000 b == 'JPY' b 'JPY' ans += float(a) ans float(a) float a ans += float(a)*380000 ans float(a)*380000 float(a) float a 380000 print(ans) print ans rl = lambda: list(map(int, sys.stdin.readline().split())) lambda: list(map(int, sys.stdin.readline().split())) rl rs = lambda: sys.stdin.readline().split() lambda: sys.stdin.readline().split() rs rm = lambda: map(int, sys.stdin.readline().split()) lambda: map(int, sys.stdin.readline().split()) rm ans += float(a) float(a) ans ri = lambda: int(sys.stdin.readline()) lambda: int(sys.stdin.readline()) ri ans += float(a)*380000 float(a)*380000 ans a, b = rs() rs() a mod = 10**9 + 7 10**9 + 7 mod n = ri() ri() n inf = float('inf') float('inf') inf rr = lambda: sys.stdin.readline().rstrip() lambda: sys.stdin.readline().rstrip() rr ans = 0 0 ans b = rs() rs() b
import sys
import math
import itertools
import collections
import heapq
import re
import numpy as np

rr = lambda: sys.stdin.readline().rstrip()
rs = lambda: sys.stdin.readline().split()
ri = lambda: int(sys.stdin.readline())
rm = lambda: map(int, sys.stdin.readline().split())
rl = lambda: list(map(int, sys.stdin.readline().split()))
inf = float('inf')
mod = 10**9 + 7

n = ri()
ans = 0
for _ in range(n):
  a, b = rs()
  if b == 'JPY':
    ans += float(a)
  else:
    ans += float(a)*380000
print(ans)
  
    








