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#include <iostream> #include<ctime> #include<map> #include<vector> #include<queue> using namespace std; string a, b; int dp[1005][1005]; int rec(int pos_a, int pos_b) { if(pos_a == -1 or pos_b == -1) { return 0; } if(dp[pos_a][pos_b] != -1) { return dp[pos_a][pos_b]; } int result = 0; if(a[pos_a] == b[pos_b]) { result = max(result, rec(pos_a - 1, pos_b - 1) + 1); } result = max(result, rec(pos_a - 1, pos_b)); result = max(result, rec(pos_a, pos_b - 1)); dp[pos_a][pos_b] = result; return result; } int main() { cin >> a >> b; for(int i = 0; i < a.size(); i++) { for(int j = 0; j < b.size(); j++) { dp[i][j] = -1; } } cout << rec(a.size() - 1, b.size() - 1) << endl; return 0; }
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