Submission #1232129

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Source Code Expand

#include <iostream>

using namespace std;

int main() {
  int n;
  string s;
  cin >> n >> s;
  int x = 0;
  int m = 0;
  for (int i = 0; i < n; i++) {
    x += s[i] == 'I' ? 1 : -1;
    m = max(m, x);
  }
  cout << m << endl;
  return 0;
}

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