include[HTML_REMOVED]
include[HTML_REMOVED]
include[HTML_REMOVED]
using namespace std;
bool isShouXing(int num) {
int squr = num * num;
if (2 <= num &&num < 10) {
squr = squr % 10;
}
else {
squr = squr % 100;
}
return num == squr;
}
int main() {
int num;
while (cin>>num) {
if (isShouXing(num)) {
cout << “Yes!” << endl;
}
else {
cout << “No!” << endl;
}
}
}
//特别简单