Submission #2233729

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Source Code Expand

#include "bits/stdc++.h"
using namespace std;
#define FOR(i,a,b) for(int i =(a);i<(b);i++)
#define REP(i,n) for(int i=0;i<(n);i++)
#define REPm(i,n) for(int i=(n)-1;i>=0;i--)
#define REP1(i,n) for(int i=1;i<=(n);i++)
typedef long long ll;
int main(){
    int N;
    string S;
    cin >> N >> S;
    int x = 0;
    int max = 0;
    REP(i,N){
        if(S[i] == 'I') x++;
        else x--;
        if(x > max) max = x;
    }
    cout << max << endl;
    return 0;
}

Submission Info

Judge Result