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Re:WA-> ACIn Reply To:WA-> AC Posted by:spracle_hao at 2008-08-26 15:38:48 通过1850,排除了文件结束符的原因,那这又是什么原因呢?c++,g++???
附代码:
/*
Filename: 1496.cpp
Author: spracle
Created: 2008年08月26日 15时11分05秒
*/
#include<iostream>
#define min(a,b) ((a)>(b) ? (b) : (a))
using namespace std;
const int stdd[11]={0,26,325,2600,14950,65780,230230,657800,1562275,3124550,5311735};
int solve(int m,int n)
{
if(m==n) return 1;
if(m>n) return 0;
m=min(m,n-m);
double res=1.0;
for(int i=1;i<=m;i++)
res*=(n+1-i)*1.0/i;
return (int)res;
}
int main()
{
char s[12];
while(cin>>s)
{
int ps[12];bool flag=0;
int l=strlen(s);
for(int i=0;i<l;i++)
{
ps[i]=s[i]-'a'+1;
if(i>=1 && s[i]<=s[i-1])
flag=1;
}
if(flag) cout<<'0'<<endl;
else
{
int res=0;
for(int i=1;i<=l;i++)
res+=stdd[i];
for(int j=0;j<l;j++)
res-=solve(l-j,26-ps[j]);
cout<<res<<endl;
}
}
return 0;
}
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