Your Ride Is Here
It is a well-known fact that behind every good comet is a UFO. TheseUFOs often come to collect loyal supporters from here on Earth.Unfortunately, they only have room to pick up one group of followers oneach trip. They do, however, let the groups know ahead of time whichwill be picked up for each comet by a clever scheme: they pick a namefor the comet which, along with the name of the group, can be used todetermine if it is a particular group's turn to go (who do you thinknames the comets?). The details of the matching scheme are given below;your job is to write a program which takes the names of a group and acomet and then determines whether the group should go with the UFO behindthat comet.
Both the name of the group and the name of the comet are converted intoa number in the following manner: the final number is just the product ofall the letters in the name, where "A" is 1 and "Z" is26. For instance, the group "USACO" would be 21 * 19 * 1 * 3 *15 = 17955. If the group's number mod 47 is the same as the comet's numbermod 47, then you need to tell the group to get ready! (Remember that"a mod b" is the remainder left over after dividing a by b; 34mod 10 is 4.)
Write a program which reads in the name of the comet and the name ofthe group and figures out whether according to the above scheme the namesare a match, printing "GO" if they match and "STAY" ifnot. The names of the groups and the comets will be a string of capitalletters with no spaces or punctuation, up to 6 characters long.
Examples:
| Input | Output |
COMETQ HVNGAT |
GO |
ABSTAR USACO |
STAY |
PROGRAM NAME: ride
This means that you fill in your header with:PROG: ride
WARNING: You must have 'ride' in this field or thewrong test data (or no test data) will be used.
INPUT FORMAT
| Line 1: | An upper case character string of length 1..6 that is the name of the comet. |
| Line 2: | An upper case character string of length 1..6 that is the name of the group. |
NOTE: The input file has a newline at the end of each linebut does not have a "return". Sometimes, programmers code forthe Windows paradigm of "return" followed by "newline"; don't dothat! Use simple input routines like "readln" (for Pascal) and,for C/C++, "fscanf" and "fid>>string".
NOTE 2: Because of the extra characters, be sure to leaveenough room for a 'newline' (also notated as '\n') and an end ofstring character ('\0') if your language uses it (as C and C++ do).This means you need eight characters of room instead of six.
SAMPLE INPUT (file ride.in)
COMETQ HVNGAT
OUTPUT FORMAT
A single line containing either the word "GO" or the word "STAY".SAMPLE OUTPUT (file ride.out)
GO
OUTPUT EXPLANATION
Converting the letters to numbers:| C | O | M | E | T | Q | |
| 3 | 15 | 13 | 5 | 20 | 17 | |
| H | V | N | G | A | T | |
| 8 | 22 | 14 | 7 | 1 | 20 |
3 * 15 * 13 * 5 * 20 * 17 = 994500 mod 47 = 27 8 * 22 * 14 * 7 * 1 * 20 = 344960 mod 47 = 27
Because both products evaluate to 27 (when modded by 47), themission is 'GO'.
题意很简单，用A~Z表示1~26，然后字符串所表示的各个数字相乘的结果对47取余数，两个字符串处理的结果若一样，则输出GO， 否则输出STAY
#include <iostream>
#include <string>
#include <stdio.h>
/*
ID: ifayne1
LANG: C++
TASK: ride
*/
using namespace std;
int main()
{
freopen("ride.in", "r", stdin);
freopen("ride.out", "w", stdout);
string s1, s2;
cin >> s1;
cin >> s2;
int k1 = s1.length();
int k2 = s2.length();
long long sum1 = 1, sum2 = 1;
for ( int i=0; i<k1; i++ )
sum1 *= (s1[i] - 'A' + 1);
for ( int i=0; i<k2; i++ )
sum2 *= (s2[i] - 'A' + 1);
if ( sum1 % 47 == sum2 % 47 ) cout << "GO" << endl;
else cout << "STAY" << endl;
return 0;
}