標籤:ring find comm desktop contest namespace nbsp while cin
| find the nth digit |
| Time Limit: 1000/1000 MS (Java/Others) Memory Limit: 32768/32768 K (Java/Others) |
| Total Submission(s): 880 Accepted Submission(s): 325 |
| |
Problem Description 假設:
S1 = 1
S2 = 12
S3 = 123
S4 = 1234
.........
S9 = 123456789
S10 = 1234567891
S11 = 12345678912
............
S18 = 123456789123456789
..................
現在我們把所有的串聯接起來
S = 1121231234.......123456789123456789112345678912.........
那麼你能告訴我在S串中的第N個數字是多少嗎? |
Input輸入首先是一個數字K,代表有K次詢問。
接下來的K行每行有一個整數N(1 <= N < 2^31)。 |
| Output對於每個N,輸出S中第N個對應的數字. |
Sample Input
61234510 |
Sample Output
112124 |
| Author8600 |
| SourceHDU 2007-Spring Programming Contest - Warm Up (1) |
| Recommend8600 |
/*加到S65536長度就大於2^31了*/#include<bits/stdc++.h>using namespace std;int main(){ //freopen("C:\\Users\\acer\\Desktop\\in.txt","r",stdin); long long n,t; scanf("%lld",&t); while(t--) { scanf("%lld",&n); long long i; long long s=0; for(i=1;s<n;i++) s+=i; long long cur=n-s+i-1; if(cur%9) printf("%d\n",cur%9); else puts("9"); }}
find the nth digit