大数模版

#include<iostream>
#include<cstring>
#include<iomanip>
#include<algorithm>
#include<cstdio>
using namespace std;
class BigNum;
istream & operator>>(istream&,BigNum&);
ostream & operator<<(ostream&,BigNum&);
#define MAXN 9999
#define MAXSIZE 1000
#define DLEN 4

class BigNum {
public:
    int a[MAXSIZE];
    int len;
public:

    BigNum() {
        len = 1;
        memset(a,sizeof (a));
    }
    BigNum(const int);
    BigNum(const char*);
    BigNum(const BigNum &);
    BigNum & operator=(const BigNum &);
    friend istream & operator>>(istream&,BigNum&);
    friend ostream & operator<<(ostream&,BigNum&);
    BigNum operator+(const BigNum &) const;
    BigNum operator-(const BigNum &) const;
    BigNum operator*(const BigNum &) const;
    BigNum operator/(const int &) const;
    BigNum operator^(const int &) const;
    int operator%(const int &) const;
    bool operator>(const BigNum & T)const;
    bool operator==(const BigNum & T)const;
    bool operator==(const int & t)const;
    bool operator>(const int & t)const;
};

istream & operator>>(istream & in,BigNum & b) {
    char ch[MAXSIZE * 4];
    int i = -1;
    in >> ch;
    int l = strlen(ch);
    int count = 0,sum = 0;
    for (i = l - 1; i >= 0;) {
        sum = 0;
        int t = 1;
        for (int j = 0; j < 4 && i >= 0; j++,i--,t *= 10) {
            sum += (ch[i] - '0') * t;
        }
        b.a[count] = sum;
        count++;
    }
    b.len = count++;
    return in;

}

ostream & operator<<(ostream& out,BigNum& b) {
    int i;
    cout << b.a[b.len - 1];
    for (i = b.len - 2; i >= 0; i--) {
        cout.width(DLEN);
        cout.fill('0');
        cout << b.a[i];
    }
    return out;
}

BigNum::BigNum(const int b) {
    int c,d = b;
    len = 0;
    memset(a,sizeof (a));
    while (d > MAXN) {
        c = d - (d / (MAXN + 1)) * (MAXN + 1);
        d = d / (MAXN + 1);
        a[len++] = c;
    }
    a[len++] = d;
}

BigNum::BigNum(const char*s) {
    int t,k,index,l;
    memset(a,sizeof (a));
    l = strlen(s);
    len = l / DLEN;
    if (l % DLEN)len++;
    index = 0;
    for (int i = l - 1; i >= 0; i -= DLEN) {
        t = 0;
        k = i - DLEN + 1;
        if (k < 0)k = 0;
        for (int j = k; j <= i; j++)
            t = t * 10 + s[j] - '0';
        a[index++] = t;
    }
}

BigNum::BigNum(const BigNum & T) : len(T.len) {
    int i;
    memset(a,sizeof (a));
    for (i = 0; i < len; i++) a[i] = T.a[i];
}

BigNum & BigNum::operator=(const BigNum & n) {
    len = n.len;
    memset(a,sizeof (a));
    for (int i = 0; i < len; i++)
        a[i] = n.a[i];
    return *this;
}

BigNum BigNum::operator+(const BigNum & T) const {
    BigNum t(*this);
    int i,big;
    big = T.len > len ? T.len : len;
    for (i = 0; i < big; i++) {
        t.a[i] += T.a[i];
        if (t.a[i] > MAXN) {
            t.a[i + 1]++;
            t.a[i] -= MAXN + 1;
        }
    }
    if (t.a[big] != 0) t.len = big + 1;
    else t.len = big;
    return t;
}

BigNum BigNum::operator-(const BigNum & T) const {
    int i,j,big;
    bool flag;
    BigNum t1,t2;
    if (*this>T) {
        t1 = *this;
        t2 = T;
        flag = 0;
    } else {
        t1 = T;
        t2 = *this;
        flag = 1;
    }
    big = t1.len;
    for (i = 0; i < big; i++) {
        if (t1.a[i] < t2.a[i]) {
            j = i + 1;
            while (t1.a[j] == 0) j++;
            t1.a[j--]--;
            while (j > i) t1.a[j--] += MAXN;
            t1.a[i] += MAXN + 1 - t2.a[i];
        } else t1.a[i] -= t2.a[i];
    }
    t1.len = big;
    while (t1.a[len - 1] == 0 && t1.len > 1) {
        t1.len--;
        big--;
    }
    if (flag)t1.a[big - 1] = 0 - t1.a[big - 1];
    return t1;
}

BigNum BigNum::operator*(const BigNum & T) const {
    BigNum ret;
    int i,up;
    int temp,temp1;
    for (i = 0; i < len; i++) {
        up = 0;
        for (j = 0; j < T.len; j++) {
            temp = a[i] * T.a[j] + ret.a[i + j] + up;
            if (temp > MAXN) {
                temp1 = temp - temp / (MAXN + 1) * (MAXN + 1);
                up = temp / (MAXN + 1);
                ret.a[i + j] = temp1;
            } else {
                up = 0;
                ret.a[i + j] = temp;
            }
        }
        if (up != 0)
            ret.a[i + j] = up;
    }
    ret.len = i + j;
    while (ret.a[ret.len - 1] == 0 && ret.len > 1) ret.len--;
    return ret;
}

BigNum BigNum::operator/(const int & b) const {
    BigNum ret;
    int i,down = 0;
    for (i = len - 1; i >= 0; i--) {
        ret.a[i] = (a[i] + down * (MAXN + 1)) / b;
        down = a[i] + down * (MAXN + 1) - ret.a[i] * b;
    }
    ret.len = len;
    while (ret.a[ret.len - 1] == 0 && ret.len > 1) ret.len--;
    return ret;
}

int BigNum::operator %(const int & b) const {
    int i,d = 0;
    for (i = len - 1; i >= 0; i--) {
        d = ((d * (MAXN + 1)) % b + a[i]) % b;
    }
    return d;
}

BigNum BigNum::operator^(const int & n) const {
    BigNum t,ret(1);
    int i;
    if (n < 0)exit(-1);
    if (n == 0)return 1;
    if (n == 1)return *this;
    int m = n;
    while (m > 1) {
        t = *this;
        for (i = 1; i << 1 <= m; i <<= 1) {
            t = t*t;
        }
        m -= i;
        ret = ret*t;
        if (m == 1)ret = ret * (*this);
    }
    return ret;
}

bool BigNum::operator>(const BigNum & T) const {
    int ln;
    if (len > T.len) return true;
    else if (len == T.len) {
        ln = len - 1;
        while (a[ln] == T.a[ln] && ln >= 0) ln--;
        if (ln >= 0 && a[ln] > T.a[ln]) return true;
        else return false;
    } else return false;
}

bool BigNum::operator==(const BigNum & T) const {
    int ln;
    if (len != T.len) return false;
    else {
        ln = len - 1;
        while (a[ln] == T.a[ln] && ln--);
        if (ln < 0) return true;
        else return false;
    }
}

bool BigNum::operator>(const int & t) const {
    BigNum b(t);
    return *this>b;
}

bool BigNum::operator==(const int & t) const {
    BigNum b(t);
    return *this == b;
}

int main() 
	{
    char s[110];
    while(cin>>s&&s[0]!='0')
    {
    	BigNum a(s),b,c,d,e("5"),f("17");
    	b=a/10;
    	c=a%10;
    	d=b-e*c;
    	//cout<<d<<endl;
	    //d=d+f;
	    if(d%17==0)
	    	cout <<"1"<< endl;
    	else
    		cout<<"0"<<endl;
    }
    

}