Problem Solving►UVa

UVa 640 - Self Numbers

Contents

  1. 1. Problem
  2. 2. Solution
  3. 3. Code

Problem

題目網址
中文網址

Solution

直接建表。

Code

UVa 640
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#include<cstdio>
#define N 1000001
int main()
{
    bool ans[N] = {};
    for (int i = 1; i < 999999; i++)
    {
        int sum = i, temp = i;
        while (temp)
        {
            sum += temp % 10;
            temp /= 10;
        }

        if (sum < N)
            ans[sum] = true;
    }

    for (int i = 1; i < N; i++)
        if (!ans[i])
            printf("%d\n", i);

    return 0;
}