C - 等比数列

C - 等比数列

O(N)

import sys
import math
import heapq
import itertools
from collections import deque
from functools import reduce

# main
def main():
    A, R, N = list(map(int, input().split()))

    if R == 1:
        print(A)
        return

    for i in range(0, N-1):
        A *= R

        if A > 10**9:
            print("large")
            return
        
    print(A)

# エントリポイント
if __name__ == '__main__':
    main()