oi-learn/luogu/P5705.cc

16 lines
275 B
C++

#include <bits/stdc++.h>
#include <stack>
int main() {
using namespace std;
stack<char> st;
char ch;
while ((ch = getchar()) != '\n')
if (isdigit(ch) || ch == '.')
st.push(ch);
while (!st.empty()) {
putchar(st.top());
st.pop();
}
return 0;
}