Wuhan University of Science and Technology acm:1005: Chinese Edition C language Programming tutorial (second Edition) example 5.8

Problem Description

The teacher gave a title to Xiao Hao: give you two integers x and n ( -10<=x<=10,1<=n<=10), let you find out the results of x^1+x^2+x^3+......+x^n. now that little Howe is in a quandary, please help him solve the problem.

Input

Enter two integers x and n per line.

Output

for each set of test data, the output line evaluates.

Sample Input

1 12 2

Sample Output

16

HINT

1#include <stdio.h>2 3 4 Long LongSumintXintN)5 {6 Long Longs=0;7     inti,j;8 Long LongS1;9      for(i=1; i<=n;i++)Ten     { Ones1=1; A          for(j=1; j<=i;j++) -         { -s1*=x; the         } -s+=S1; -     } -     returns; + } -  + intMain () A { at     intX,n; -      while(SCANF ("%d%d", &x,&n)! =EOF) -     { -printf"%lld\n", SUM (x,n)); -     } -      in     return 1; -}

Wuhan University of Science and Technology acm:1005: Chinese Edition C language Programming tutorial (second Edition) example 5.8