#include <iostream>#include <cstdio>#include <cstring>using namespace std;char s[10000];int t[10000];int tot;int gettype(char c){ if (c == '+' || c == '-') return 1; if (c >= '0' && c <= '9') return 2; if (c == '.') return 3; if (c == 'e' || c == 'E') return 4; return -1;}int main(){ while (true) { gets(s); if (strcmp(s,"#") == 0) break; tot = 0; int len = strlen(s); int pret = 0; bool check = true; for (int i = 0;i < len;i++) { int ttype = gettype(s[i]); if (ttype == -1) { check = false; break; } if (ttype != pret) { tot++; t[tot] = ttype; pret = ttype; } else { if (ttype != 2) { check = false; break; } } } if (check == false) { printf("Non"); continue; } int hase = 0; int pose = 0; for (int i = 1;i <= tot;i++) if (t[i] == 4) { hase++; pose = i; } if (hase >= 2) { printf("Non"); continue; } if (hase == 0) { bool isnum = true; int cur = 0; int num = 0; int dot = 0; for (int i = 1;i <= tot;i++) { if (t[i] == 1) { if (cur > 0) { isnum = false; break; } else cur++; } else { if (t[i] == 2) num++; if (t[i] == 3) dot++; cur++; } } if (dot >= 2) isnum = false; if (num == 0) isnum = false; if (isnum == false) printf("Non"); else printf("Yesn"); continue; } else { bool isnum = true; int cur = 0; int num = 0; int dot = 0; for (int i = 1;i <= pose-1;i++) { if (t[i] == 1) { if (cur > 0) { isnum = false; break; } else cur++; } else { if (t[i] == 2) num++; if (t[i] == 3) dot++; cur++; } } if (dot >= 2) isnum = false; if (num == 0) isnum = false; if (isnum == false) { printf("Non"); continue; } isnum = true; if (pose+1 != tot) { if (pose+1 == tot-1) { if (t[tot] != 2) isnum = false; if (t[tot-1] != 1) isnum = false; } else if (pose+1 == tot-2) { if (t[tot] != 2) isnum = false; if (t[tot-1] != 1) isnum = false; if (t[tot-2] != 2) isnum = false; } else isnum = false; } else { if (t[tot] != 2) isnum = false; } if (isnum == false) printf("Non"); else printf("Yesn"); continue; } }}
