ProgramAlgTrain/20240823/十四届蓝桥比赛/简单算术题.cpp

#include<iostream>
#include<stack>
using namespace std;
typedef long long ll;

stack<ll> s;

int main(){
    int i;
    cin>>i;
    char f;
    s.push(i);
    while(cin>>f){
        cin>>i;
        if(f=='+'){
            s.push(i);
        }else if(f=='-'){
            s.push(-i);
        }else if(f=='*'){
            int h = s.top();
            s.pop();
            s.push(h*i);
        }else{
            int h = s.top();
            s.pop();
            s.push(h/i);
        }
    }
    int ans = 0;
    while(s.empty()==false){
        ans+=s.top();
        s.pop();
    }
    cout<<ans<<endl;
}