22 lines
406 B
C++
22 lines
406 B
C++
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#include <ios>
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#include <iostream>
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void HLT(int n,char a,char b,char c){
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if(n==1){
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std::cout<<a<<"->"<<n<<"->"<<c<<"\n";
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return;
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}
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HLT(n-1, a, c, b);
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std::cout<<a<<"->"<<n<<"->"<<c<<"\n";
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HLT(n-1, b, a,c);
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}
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int main(){
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std::ios::sync_with_stdio(false),std::cin.tie(0),std::cout.tie(0);
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int n;
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char a,b,c;
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std::cin>>n>>a>>c>>b;
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HLT(n, a, b, c);
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}
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