數論 HDU-1061 Rightmost Digit
阿新 • • 發佈:2018-12-18
Given a positive integer N, you should output the most right digit of N^N.
Input
The input contains several test cases. The first line of the input is a single integer T which is the number of test cases. T test cases follow. Each test case contains a single positive integer N(1<=N<=1,000,000,000).
Output
For each test case, you should output the rightmost digit of N^N.
Sample Input
2
3
4
Sample Output
7
6
Hint
In the first case, 3 * 3 * 3 = 27, so the rightmost digit is 7.
In the second case, 4 * 4 * 4 * 4 = 256, so the rightmost digit is 6.
題意:對於每個輸入的數字n,輸出其n的n次方最右邊的數字
# include<cstdio> #include<cstring> using namespace std; long long n; long long pow() { long long result=1; long long x=n; while(x>0) { if(x%2) result=result*n%10; n=n*n%10; x=x/2; } return result; } int main() { long long t; scanf("%lld",&t); while(t--) { scanf("%lld",&n); printf("%lld\n",pow()); } return 0; }