#include<bits/stdc++.h> using namespace std;int main(){
string s<span class="hl-punctuation hl-terminator hl-c++">;</span> <span class="hl-meta hl-function-call hl-c++"><span class="hl-variable hl-function hl-c++">getline</span><span class="hl-meta hl-group hl-c++"><span class="hl-punctuation hl-section hl-group hl-begin hl-c++">(</span></span></span><span class="hl-meta hl-function-call hl-c++"><span class="hl-meta hl-group hl-c++">cin<span class="hl-punctuation hl-separator hl-c++">,</span>s</span></span><span class="hl-meta hl-function-call hl-c++"><span class="hl-meta hl-group hl-c++"><span class="hl-punctuation hl-section hl-group hl-end hl-c++">)</span></span></span><span class="hl-punctuation hl-terminator hl-c++">;</span> <span class="hl-keyword hl-control hl-c++">for</span><span class="hl-meta hl-group hl-c++"><span class="hl-punctuation hl-section hl-group hl-begin hl-c++">(</span><span class="hl-storage hl-type hl-c">int</span> i<span class="hl-keyword hl-operator hl-assignment hl-c">=</span><span class="hl-constant hl-numeric hl-c++">0</span><span class="hl-punctuation hl-terminator hl-c++">;</span>i <span class="hl-keyword hl-operator hl-comparison hl-c"><</span> s<span class="hl-punctuation hl-accessor hl-dot hl-c++">.</span><span class="hl-meta hl-method-call hl-c++"><span class="hl-variable hl-function hl-member hl-c++">length</span><span class="hl-meta hl-group hl-c++"><span class="hl-punctuation hl-section hl-group hl-begin hl-c++">(</span></span></span><span class="hl-meta hl-method-call hl-c++"></span><span class="hl-meta hl-method-call hl-c++"><span class="hl-meta hl-group hl-c++"><span class="hl-punctuation hl-section hl-group hl-end hl-c++">)</span></span></span><span class="hl-punctuation hl-terminator hl-c++">;</span>i<span class="hl-keyword hl-operator hl-arithmetic hl-c">+</span><span class="hl-keyword hl-operator hl-arithmetic hl-c">+</span><span class="hl-punctuation hl-section hl-group hl-end hl-c++">)</span></span><span class="hl-meta hl-block hl-c++"><span class="hl-punctuation hl-section hl-block hl-begin hl-c++">{</span> <span class="hl-keyword hl-control hl-c++">if</span><span class="hl-meta hl-group hl-c++"><span class="hl-punctuation hl-section hl-group hl-begin hl-c++">(</span>s<span class="hl-meta hl-brackets hl-c++"><span class="hl-punctuation hl-section hl-brackets hl-begin hl-c++">[</span>i<span class="hl-punctuation hl-section hl-brackets hl-end hl-c++">]</span></span><span class="hl-keyword hl-operator hl-comparison hl-c">!=</span><span class="hl-string hl-quoted hl-single hl-c"><span class="hl-punctuation hl-definition hl-string hl-begin hl-c">'</span> <span class="hl-punctuation hl-definition hl-string hl-end hl-c">'</span></span><span class="hl-punctuation hl-section hl-group hl-end hl-c++">)</span></span><span class="hl-meta hl-block hl-c++"><span class="hl-punctuation hl-section hl-block hl-begin hl-c++">{</span> <span class="hl-keyword hl-control hl-c++">if</span><span class="hl-meta hl-group hl-c++"><span class="hl-punctuation hl-section hl-group hl-begin hl-c++">(</span>s<span class="hl-meta hl-brackets hl-c++"><span class="hl-punctuation hl-section hl-brackets hl-begin hl-c++">[</span>i<span class="hl-punctuation hl-section hl-brackets hl-end hl-c++">]</span></span> <span class="hl-keyword hl-operator hl-comparison hl-c">==</span> <span class="hl-string hl-quoted hl-single hl-c"><span class="hl-punctuation hl-definition hl-string hl-begin hl-c">'</span>a<span class="hl-punctuation hl-definition hl-string hl-end hl-c">'</span></span><span class="hl-punctuation hl-section hl-group hl-end hl-c++">)</span></span><span class="hl-meta hl-block hl-c++"><span class="hl-punctuation hl-section hl-block hl-begin hl-c++">{</span> cout <span class="hl-keyword hl-operator hl-arithmetic hl-c"><<</span> <span class="hl-string hl-quoted hl-single hl-c"><span class="hl-punctuation hl-definition hl-string hl-begin hl-c">'</span>b<span class="hl-punctuation hl-definition hl-string hl-end hl-c">'</span></span> <span class="hl-keyword hl-operator hl-arithmetic hl-c"><<</span> <span class="hl-string hl-quoted hl-single hl-c"><span class="hl-punctuation hl-definition hl-string hl-begin hl-c">'</span> <span class="hl-punctuation hl-definition hl-string hl-end hl-c">'</span></span> <span class="hl-punctuation hl-terminator hl-c++">;</span> <span class="hl-punctuation hl-section hl-block hl-end hl-c++">}</span></span> <span class="hl-keyword hl-control hl-c++">if</span><span class="hl-meta hl-group hl-c++"><span class="hl-punctuation hl-section hl-group hl-begin hl-c++">(</span>s<span class="hl-meta hl-brackets hl-c++"><span class="hl-punctuation hl-section hl-brackets hl-begin hl-c++">[</span>i<span class="hl-punctuation hl-section hl-brackets hl-end hl-c++">]</span></span> <span class="hl-keyword hl-operator hl-comparison hl-c">==</span> <span class="hl-string hl-quoted hl-single hl-c"><span class="hl-punctuation hl-definition hl-string hl-begin hl-c">'</span>c<span class="hl-punctuation hl-definition hl-string hl-end hl-c">'</span></span><span class="hl-punctuation hl-section hl-group hl-end hl-c++">)</span></span><span class="hl-meta hl-block hl-c++"><span class="hl-punctuation hl-section hl-block hl-begin hl-c++">{</span> cout <span class="hl-keyword hl-operator hl-arithmetic hl-c"><<</span> <span class="hl-string hl-quoted hl-single hl-c"><span class="hl-punctuation hl-definition hl-string hl-begin hl-c">'</span>d<span class="hl-punctuation hl-definition hl-string hl-end hl-c">'</span></span> <span class="hl-keyword hl-operator hl-arithmetic hl-c"><<</span> <span class="hl-string hl-quoted hl-single hl-c"><span class="hl-punctuation hl-definition hl-string hl-begin hl-c">'</span> <span class="hl-punctuation hl-definition hl-string hl-end hl-c">'</span></span> <span class="hl-punctuation hl-terminator hl-c++">;</span> <span class="hl-punctuation hl-section hl-block hl-end hl-c++">}</span></span> <span class="hl-keyword hl-control hl-c++">if</span><span class="hl-meta hl-group hl-c++"><span class="hl-punctuation hl-section hl-group hl-begin hl-c++">(</span>s<span class="hl-meta hl-brackets hl-c++"><span class="hl-punctuation hl-section hl-brackets hl-begin hl-c++">[</span>i<span class="hl-punctuation hl-section hl-brackets hl-end hl-c++">]</span></span> <span class="hl-keyword hl-operator hl-comparison hl-c">!=</span> <span class="hl-string hl-quoted hl-single hl-c"><span class="hl-punctuation hl-definition hl-string hl-begin hl-c">'</span>a<span class="hl-punctuation hl-definition hl-string hl-end hl-c">'</span></span> <span class="hl-keyword hl-operator hl-arithmetic hl-c">&&</span> s<span class="hl-meta hl-brackets hl-c++"><span class="hl-punctuation hl-section hl-brackets hl-begin hl-c++">[</span>i<span class="hl-punctuation hl-section hl-brackets hl-end hl-c++">]</span></span> <span class="hl-keyword hl-operator hl-comparison hl-c">!=</span> <span class="hl-string hl-quoted hl-single hl-c"><span class="hl-punctuation hl-definition hl-string hl-begin hl-c">'</span>c<span class="hl-punctuation hl-definition hl-string hl-end hl-c">'</span></span><span class="hl-punctuation hl-section hl-group hl-end hl-c++">)</span></span> cout <span class="hl-keyword hl-operator hl-arithmetic hl-c"><<</span> s<span class="hl-meta hl-brackets hl-c++"><span class="hl-punctuation hl-section hl-brackets hl-begin hl-c++">[</span>i<span class="hl-punctuation hl-section hl-brackets hl-end hl-c++">]</span></span> <span class="hl-keyword hl-operator hl-arithmetic hl-c"><<</span> <span class="hl-string hl-quoted hl-single hl-c"><span class="hl-punctuation hl-definition hl-string hl-begin hl-c">'</span> <span class="hl-punctuation hl-definition hl-string hl-end hl-c">'</span></span><span class="hl-punctuation hl-terminator hl-c++">;</span> <span class="hl-punctuation hl-section hl-block hl-end hl-c++">}</span></span> <span class="hl-punctuation hl-section hl-block hl-end hl-c++">}</span></span> <span class="hl-keyword hl-control hl-c++">return</span> <span class="hl-constant hl-numeric hl-c++">0</span><span class="hl-punctuation hl-terminator hl-c++">;</span>
}