Submission #904466

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Source Code Expand

#include <iostream>
#include <array>
#include <vector>
#include <map>
#include <utility>
#include <cstring>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <queue>
#include <stack>
#include <deque>
#include <set>
#include <string>

using namespace std;

int main(int argc, const char * argv[]) {
    stack<char> st;
    char ch;
    while ((ch = getchar()) != '\n') {
        if (st.empty()) {
            st.push(ch);
        }else if (ch == 'T' && st.top() == 'S') {
            st.pop();
        }else{
            st.push(ch);
        }
    }
    
    cout<<st.size()<<endl;
    
    
    return 0;
}

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