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#include <iostream> #include <vector> using namespace std; int main() { string a, b; cin >> a >> b; vector<vector<int> > dp(a.size() + 1, vector<int>(b.size() + 1, -2e9)); dp[0][0] = 0; for(int i = 0; i < a.size(); i++) { for(int j = 0; j < b.size(); j++) { if(a[i] == b[j]) { dp[i + 1][j + 1] = max(dp[i + 1][j + 1], dp[i][j] + 1); } dp[i + 1][j] = max(dp[i + 1][j], dp[i][j]); dp[i][j + 1] = max(dp[i][j + 1], dp[i][j]); } } int lcs = 0; for(int i = 0; i <= a.size(); i++) { for(int j = 0; j <= b.size(); j++) { lcs = max(lcs, dp[i][j]); } } cout << lcs << endl; return 0; }
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