#include<iostream>
#include<stack>
#include<math.h>
#include<string>
using namespace std;
stack<int> num;
stack<char> ops;
string s;
void cal(char c)
{
int a=num.top();
num.pop();
int b=num.top();
num.pop();
int d;
if(c=='+') d=a+b;
else if(c=='-') d=b-a;
else if(c=='*') d=b*a;
else if(c=='/') d=b/a;
else d=pow(b,a);
num.push(d);
}
int main(){
cin>>s;
for(int i=0;i<s.size();i++){
if(s[i]>='0'&&s[i]<='9'){
num.push(s[i]-'0');
}
else {
cal(s[i]);
}
}
cout<<num.top()<<endl;
return 0;
}
Processed:
0.010, SQL:
8
