HDU1060 Leftmost Digit
2017-07-25 21:42
232 查看
1060
Total Submission(s): 18433 Accepted Submission(s): 7238
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 leftmost digit of N^N.
Sample Input
2
3
4
Sample Output
2
2
Hint
In the first case, 3 * 3 * 3 = 27, so the leftmost digit is 2.
In the second case, 4 * 4 * 4 * 4 = 256, so the leftmost digit is 2.
Author
Ignatius.L
Recommend
We have carefully selected several similar problems for you: 1018 1071 1573 1066 1065
m=n^n,两边分别对10取对数得 log10(m)=n*log10(n),得m=10^(n*log10(n));
Leftmost Digit
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 65536/32768 K (Java/Others)Total Submission(s): 18433 Accepted Submission(s): 7238
Problem Description
Given a positive integer N, you should output the leftmost 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 leftmost digit of N^N.
Sample Input
2
3
4
Sample Output
2
2
Hint
In the first case, 3 * 3 * 3 = 27, so the leftmost digit is 2.
In the second case, 4 * 4 * 4 * 4 = 256, so the leftmost digit is 2.
Author
Ignatius.L
Recommend
We have carefully selected several similar problems for you: 1018 1071 1573 1066 1065
m=n^n,两边分别对10取对数得 log10(m)=n*log10(n),得m=10^(n*log10(n));
#include<stdio.h> #include<math.h> using namespace std; int main() { int T,n; scanf("%d", &T); while (T--&&scanf("%d", &n) != EOF) { double temp1, temp2; temp1 = n*1.0*log10(1.0*n); temp2 = temp1 - (__int64)(temp1); printf("%.0lf\n", (floor)(pow(10.0, temp2))); } return 0; }
相关文章推荐
- hdu1060 Leftmost Digit(转载)
- HDU1060:Leftmost Digit(数论)
- HDU1060--Leftmost Digit
- hdu1060-Leftmost Digit
- HDU1060 Leftmost Digit
- hdu1060 Leftmost Digit
- HDU1060 Leftmost Digit【取对数+数学】
- HDU1060 Leftmost Digit 【数学】
- HDU 1060 Leftmost Digit
- BIT1046 Leftmost Digit
- 1060—Leftmost Digit
- hdu acmsteps 2.1.8 Leftmost Digit
- Rightmost Digit & Leftmost Digit
- HUD-1060 Leftmost Digit
- HDU 1060 Leftmost Digit
- hdu 1060 Leftmost Digit
- 【杭电oj】1060 - Leftmost Digit(数学好题)
- [热身题][hdoj_1060]Leftmost Digit
- hdu 1060 Leftmost Digit
- Leftmost Digit