#region Header
#!/usr/bin/env python3
# from typing import *

import sys
import io
import math
import collections
import decimal
import itertools
from queue import PriorityQueue
import bisect
import heapq

def input():
    return sys.stdin.readline()[:-1]

sys.setrecursionlimit(1000000)
#endregion

# _INPUT = """2 2 8
# """
# sys.stdin = io.StringIO(_INPUT)


def main():
    A, B, C = map(int, input().split())
    x = (C // (A-1+B)) * A + min(C % (A-1+B), A)
    print(x)

if __name__ == '__main__':
    main()