mirror of
https://git.sb/baoshuo/OI-codes.git
synced 2024-11-27 18:36:26 +00:00
35 lines
764 B
C++
35 lines
764 B
C++
#include <bits/stdc++.h>
|
|
|
|
using namespace std;
|
|
|
|
int main() {
|
|
stack<int> st;
|
|
char ch;
|
|
int a, b, t = 0;
|
|
while (cin >> ch, ch != '@') {
|
|
if (ch == '.') {
|
|
st.push(t);
|
|
t = 0;
|
|
} else if ('0' <= ch && ch <= '9') {
|
|
t *= 10;
|
|
t += ch - '0';
|
|
} else {
|
|
b = st.top();
|
|
st.pop();
|
|
a = st.top();
|
|
st.pop();
|
|
if (ch == '+') {
|
|
st.push(a + b);
|
|
} else if (ch == '-') {
|
|
st.push(a - b);
|
|
} else if (ch == '*') {
|
|
st.push(a * b);
|
|
} else if (ch == '/') {
|
|
st.push(a / b);
|
|
}
|
|
}
|
|
}
|
|
cout << st.top() << endl;
|
|
return 0;
|
|
}
|