Bomb - HDU 3555 数位dp
2014-08-29 16:52
369 查看
Bomb
Time Limit: 2000/1000 MS (Java/Others) Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 7741 Accepted Submission(s): 2712
Problem Description
The counter-terrorists found a time bomb in the dust. But this time the terrorists improve on the time bomb. The number sequence of the time bomb counts from 1 to N. If the current number sequence includes the sub-sequence "49", the power of the blast would
add one point.
Now the counter-terrorist knows the number N. They want to know the final points of the power. Can you help them?
Input
The first line of input consists of an integer T (1 <= T <= 10000), indicating the number of test cases. For each test case, there will be an integer N (1 <= N <= 2^63-1) as the description.
The input terminates by end of file marker.
Output
For each test case, output an integer indicating the final points of the power.
Sample Input
3 1 50 500
Sample Output
0 1 15 HintFrom 1 to 500, the numbers that include the sub-sequence "49" are "49","149","249","349","449","490","491","492","493","494","495","496","497","498","499", so the answer is 15.
思路:和上一篇 不要62 是一样的,就不多说了。
AC代码如下:
#include<cstdio> #include<cstring> using namespace std; typedef long long ll; ll dp[21][3]; int num[30]; ll solve(ll n) { ll ans=0,ret=n; int i,j,k,len=0; bool flag=false; while(ret) { num[++len]=ret%10; ret/=10; } num[len+1]=0; for(i=len;i>0;i--) { ans+=dp[i-1][2]*num[i]; if(flag) ans+=dp[i-1][0]*num[i]; if(!flag && num[i]>4) ans+=dp[i-1][1]; if(num[i+1]==4 && num[i]==9) flag=true; } return ans; } int main() { int t,i,j,k; ll n; dp[0][0]=1; for(i=1;i<=20;i++) { dp[i][0]=dp[i-1][0]*10-dp[i-1][1]; dp[i][1]=dp[i-1][0]; dp[i][2]=dp[i-1][2]*10+dp[i-1][1]; } scanf("%d",&t); while(t--) { scanf("%I64d",&n); printf("%I64d\n",solve(n+1)); } }
相关文章推荐
- HDU 3555 Bomb (数位DP)
- hdu 3555 - Bomb [数位dp]
- hdu 3555 Bomb(数位DP)
- hdu 3555 Bomb(数位DP,4级)
- HDU 3555 Bomb(数位DP)
- 动态规划晋级——HDU 3555 Bomb【数位DP详解】
- HDU 3555 Bomb (数位DP)
- hdu 3555 Bomb(数位dp)
- HDU 3555 Bomb 数位dp
- HDU 3555 Bomb 数位DP
- HDU --3555--Bomb--数位DP
- hdu 3555 Bomb 数位dp
- 动态规划晋级——HDU 3555 Bomb【数位DP详解】
- 【数位DP】【HDU 3555】Bomb
- HDU-3555 Bomb 数位DP
- HDU 3555 Bomb 基础数位dp
- 动态规划晋级——HDU 3555 Bomb【数位DP详解】
- HDU-3555 Bomb 数位DP
- hdu 3555 Bomb 数位DP
- hdu 3555 Bomb (数位DP)