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#include
#include
using namespace std; string s; int dp[255]; int kod(int i) { if(i >= s.size()) { return 1; } if(dp[i] != -1) { return dp[i]; } int result = 0; if(i + 1 < s.size() and s[i] != '0') { int broj = (s[i] - '0') * 10 + (s[i + 1] - '0'); if(broj <= 26) { result += kod(i + 2); } } if(s[i] != '0') { result += kod(i + 1); } dp[i] = result; return result; } int main() { cin >> s; for(int i = 0; i < 251; i++) { dp[i] = -1; } cout << kod(0) << endl; return 0; }
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