Submission #953362

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Source Code Expand

#include <bits/stdc++.h>

using namespace std;
//#define int long long
typedef pair<int,int> pii;
typedef long long ll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<pii> vp;
#define all(q) q.begin(), q.end()
#define IOS ios::sync_with_stdio(0), cin.tie(0)
#define X first
#define Y second
#define endl '\n'

main(){
    IOS;
    int n;
    cin >> n;
    string s, t;
    cin >> s >> t;
    int mx = 0;
    for(int i=1; i<=n; i++)
        if(s.substr(n - i, i) == t.substr(0, i)) mx = i;
    cout << n + n - mx << endl;
}

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