#include <stdio.h>

int main()
{
    int i,j,n=5;
    int a=1;
    for (i=1;i<=n;i++)
        {
        for (j=1;j<=i;j++)
            {
                printf("%d",a);
            }
            ++j;
            ++a;
        printf("\n");

    }
}

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