HDU 2700 Parity

奇偶校验

#include <iostream>
#include <stdio.h>
#include <string.h>
#define READ() freopen("in.txt", "r", stdin);
using namespace std;

int main()
{
    //READ()
    char str[256];
    while (gets(str))
    {
        if (str[0] == '#') break;
        int len = strlen(str);
        int one = 0, zero = 0;
        for (int i = 0; i < len; i++)
        {
            if (str[i] == '0') zero++;
            else if (str[i] == '1') one++;
            else break;
            putchar(str[i]);
        }
        if (str[len-1] == 'e')
        {
            if (one % 2 == 0) puts("0");
            else puts("1");
        }
        else
        {
            if (one % 2 == 0) puts("1");
            else puts("0");
        }
    }
    return 0;
}