P1200 USACO1.1 你的飞碟在这儿

数学+字符串问题 水题 直接上代码~

AC代码：

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;

namespace io {
    const int SIZE = 1e7 + 10;
    char inbuff[SIZE];
    char *l, *r;
    inline void init() {
        l = inbuff;
        r = inbuff + fread(inbuff, 1, SIZE, stdin);
    }
    inline char gc() {
        if (l == r) init();
        return (l != r) ? *(l++) : EOF;
    }
    void read(int &x) {
        x = 0; char ch = gc();
        while(!isdigit(ch)) ch = gc();
        while(isdigit(ch)) x = x * 10 + ch - '0', ch = gc();
    }
} using io::read;

int main(){
    char a[7], b[7];
    cin>>a>>b;
    int sum1 = 1, sum2 = 1;
    for (int i = 0; i < strlen(a); i++)
        sum1 *= (a[i] - 'A' + 1);
    for (int i = 0; i < strlen(b); i++)
        sum2 *= (b[i] - 'A' + 1);
    if (sum1 % 47 == sum2 % 47)
        cout<<"GO"<<endl;
    else cout<<"STAY"<<endl;
    return 0;
}