Envío 5571

Código

#include <bits/stdc++.h>
using namespace std;

void _print() { cerr << "]" << endl; }
template<typename T, typename... V>
void _print(T t, V... v) { cerr << t; if (sizeof...(v)) cerr << ", "; _print(v...); }

#ifdef LOCAL
    #define dbg(x...) cerr << "[" << #x << "]: ["; _print(x)
#else
    #define dbg(x...)
    #define endl '\n'
#endif
#define ll long long
#define sz(x) int(x.size())

const int MAX = 1005;
int dp[MAX][MAX];
string a, b;

int solve(int i, int j) {
    if (i == sz(a) || j == sz(b)) return max(sz(a) - i, sz(b) - j);
    int &ans = dp[i][j];
    if (~ans) return ans;
    ans = INT_MAX;
    if (a[i] == b[j]) return ans = solve(i + 1, j + 1);
    ans = min(ans, solve(i + 1, j) + 1);
    ans = min(ans, solve(i, j + 1) + 1);
    ans = min(ans, solve(i + 1, j + 1) + 1);
    return ans;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> a >> b;
    memset(dp, -1, sizeof(dp));
    cout << solve(0, 0) << endl;
    return 0;
}