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Discussion of Problem 1150. Page Numbers

s.o. to test this ??
Posted by Black^n^White 5 Oct 2006 22:09
I can't see a problem in this soluton, but I get WA on test#3
I compared it with a lot of tests to a solution, that is surely correct - the results were always equal.

#include <cstdlib>
#include <cstdio>
#include <cctype>

int func(long pages,int dgts);
char temp[10];

int main()
{
    long pages;
    long dgts = 0;
    scanf("%i",&pages);
    char strpages[10];
    sprintf(strpages,"%i",pages);

    long j = 0;

    while(isdigit(strpages[j]))
    {
              dgts++;
              ++j;
    }

    if(pages > 100)
    {
             func(pages,dgts-1);
             system("pause");
             return 0;
    }

    int digits[] = {0,0,0,0,0,0,0,0,0,0};
    for(long i = 1; i <= pages; ++i)
    {
            j = 0;
            sprintf(temp,"%i",i);
            while(isdigit(temp[j]))
                      digits[temp[j++]-48]++;
    }
    for(long i = 0; i < 10; ++i)
            printf("%i\n",digits[i]);

    system("pause");
    return 0;
}

int func(long pages,int dgts)
{
    long j = 0;
    long long_o, long_t;
    char* one = new char[dgts];
    char* two = new char[dgts+1];

    one[0] =  dgts + 46;
    for(long k = 1; k < dgts-1; ++k)
            one[k] = '8';

    one[dgts - 1] = '9';
    long_o = atoi(one);

    two[0] =  dgts + 48;
    for(long k = 1; k < dgts; ++k)
            two[k] = '0';

    long_t = atoi(two);

    long digits[10];
    digits[0] = long_o;
    for(long i = 1; i < 10; ++i)
            digits[i] = long_t;

    long start = 100;
    for(long i = 0; i < dgts - 2; ++i)
            start *= 10;

    for(long i = start; i <= pages; ++i)
    {
            j = 0;
            sprintf(temp,"%i",i);
            while(isdigit(temp[j]))
                      digits[temp[j++]-48]++;
    }
    for(long i = 0; i < 10; ++i)
            printf("%i\n",digits[i]);

    return 0;
}

Edited by author 05.10.2006 23:19
Re: s.o. to test this ??
Posted by Black^n^White 5 Oct 2006 23:18


Edited by author 05.10.2006 23:19