HDU 2274 Magic WisKey

打表。把每一种情况的和都计算出来，这个可以按位统计贡献。询问的时候输出即可。

#pragma comment(linker, "/STACK:1024000000,1024000000")
#include<cstdio>
#include<cstring>
#include<cmath>
#include<algorithm>
#include<vector>
#include<map>
#include<set>
#include<queue>
#include<stack>
#include<iostream>
using namespace std;
typedef long long LL;
const double pi=acos(-1.0),eps=1e-6;
void File()
{
    freopen("D:\in.txt","r",stdin);
    freopen("D:\out.txt","w",stdout);
}
template <class T>
inline void read(T &x)
{
    char c = getchar();
    x = 0;
    while(!isdigit(c)) c = getchar();
    while(isdigit(c)) { x = x * 10 + c - '0'; c = getchar(); }
}

int ans[100010];

void init()
{
    for(int i=0;i<=99999;i++) //00000-99999
    {
        ans[i]=0;
        int tmp=i;
        while(tmp)
        {
            int x=tmp%10; tmp=tmp/10;
            ans[i]=ans[i]+266664*x;
        }
        ans[i]=ans[i]-i;
    }
}

int main()
{
    init();
    int n;
    while(~scanf("%d",&n))
    {
        for(int i=0;i<=99999;i++)
        {
            if(ans[i]!=n) continue;
            printf("%05d
",i);
        }
    }
    return 0;
}