1212 big number.cpp

来自「威士忌的HDU题解.大概有260多题的源码。对于学习非常有好处。」· C++ 代码 · 共 36 行

/*
1212 Big Number
Time Limit : 1000 ms  Memory Limit : 32768 K  Output Limit : 256 K

GUN C++
*/
/*
(a * b) % c = ((a % c) * (b % c)) % c
(a + b) % c = ((a % c) + (b % c)) % c
*/

#include <iostream>
#include <string>
using namespace std;

const int bMax=100000;
const int aMax=1000;

int main()
{
    int b,len,i,temp;
    char a[aMax];

    while(cin>>a>>b)
    {
        len=strlen(a);
        for(i=0,temp=0;i<len;i++)
        {
            temp=( (10*temp)%b + (a[i]-'0') ) % b ;
        }
        cout<<temp<<endl;
    }
    return 0;
}