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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
 
bool check[10001];
 
int d(int n)
{
    char c[100];
    sprintf(c, "%d", n);
    int s = 0;
    for(int i = 0; i < strlen(c); i++) s += c[i] - '0';
    return n + s;
}
 
int main()
{
    for(int i = 1; i <= 10000; i++)
    {
        int n = i;
        while(true)
        {
            n = d(n);
            if(n >= 10000) break;
            check[n] = true;
        }
    }
 
    for(int i = 1; i < 10000; i++)
    {
        if(!check[i]) printf("%d\n", i);
    }
}

Success #stdin #stdout 0.2s 3476KB

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Standard input is empty

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