2382. Flowers Flourish from France

Constraints

Time Limit: 1 secs, Memory Limit: 256 MB

Description

Fiona has always loved poetry, and recently she discovered a fascinating poetical form. Tautograms are a special case of alliteration, which is the occurrence of the same letter at the beginning of adjacent words. In particular, a sentence is a tautogram if all of its words start with the same letter.

For instance, the following sentences are tautograms:

 

• Flowers Flourish from France
• Sam Simmonds speaks softly
• Peter pIckEd pePPers
• truly tautograms triumph

Fiona wants to dazzle her boyfriend with a romantic letter full of this kind of sentences. Please help Fiona to check if each sentence she wrote down is a tautogram or not.

Input

Each test case is given in a single line that contains a sentence. A sentence consists of a sequence of at most 50 words separated by single spaces. A word is a sequence of at most 20 contiguous uppercase and lowercase letters from the English alphabet. A word contains at least one letter and a sentence contains at least one word.

The last test case is followed by a line containing only a single character `*' (asterisk).

Output

For each test case output a single line containing an uppercase `Y' if the sentence is a tautogram, or an uppercase `N' otherwise.

Sample Input

Flowers Flourish from France Sam Simmonds speaks softly Peter pIckEd pePPers truly tautograms triumph this is NOT a tautogram *

Sample Output

Y Y Y Y N

Problem Source

每周一赛第二场

#include <iostream>#include <string>#include <string.h>#include <stdio.h>#include <algorithm>#include <cctype>using namespace std;int main () {string a;while (getline(cin, a) && a != "*") {//toupper(a[0]);transform(a.begin(), a.end(), a.begin(), ::toupper);bool tmp = false; //标记前面一个是不是空格bool flag = true;for (int i = 1; i < a.size(); i++) {if (tmp == true) {  //前面一个是空格if (a[i] != a[0]) { //和第一个不等//cout<<"false one : "<<a[i]<<endl;flag = false;break;} else {tmp = false;}}if (a[i] == ' ') {tmp = true;}if (flag == false)break;}if (flag == true)cout<<"Y"<<endl;elsecout<<"N"<<endl;}//system("pause");return 0;}

和vs势不两立！！！