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copied!<h1>C++, 647 chars</h1> <p>I don't expect to score highly by using C++, but nevermind that. I'm pretty sure it hits all the requirements. Note that I used the C++0x <code>auto</code> keyword for variable declaration, so adjust your complier appropriately if you decide to test my code.</p> <p><strong>Minimised version</strong></p> <pre><code>#include <iostream> #include <cstring> #include <map> using namespace std; #define C string #define S(x)v=F/a,cout<<#x<<C(v,'_') #define F t->first #define G t->second #define O &&F!= #define L for(i=22;i-->0;--t) int main(){map<C,int>f;char d[230];int i=1,v;for(;i<256;i++)d[i<123?i-1:i-27]=i;d[229]=0;char w[99];while(cin>>w){for(i=0;w[i];i++)w[i]=tolower(w[i]);char*p=strtok(w,d);while(p)++f[p],p=strtok(0,d);}multimap<int,C>c;for(auto t=f.end();--t!=f.begin();)if(F!="the"O"and"O"of"O"to"O"a"O"i"O"it"O"in"O"or"O"is")c.insert(pair<int,C>(G,F));auto t=--c.end();float a=0,A;L A=F/(76.0-G.length()),a=a>A?a:A;t=--c.end();S( );L S(\n|)<<"| "<<G;} </code></pre> <p>Here's a second version that is more "C++" by using <code>string</code>, not <code>char[]</code> and <code>strtok</code>. It's a bit larger, at <strong>669 (+22 vs above)</strong>, but I can't get it smaller at the moment so thought I'd post it anyway.</p> <pre><code>#include <iostream> #include <map> using namespace std; #define C string #define S(x)v=F/a,cout<<#x<<C(v,'_') #define F t->first #define G t->second #define O &&F!= #define L for(i=22;i-->0;--t) #define E e=w.find_first_of(d,g);g=w.find_first_not_of(d,e); int main(){map<C,int>f;int i,v;C w,x,d="abcdefghijklmnopqrstuvwxyz";while(cin>>w){for(i=w.size();i-->0;)w[i]=tolower(w[i]);unsigned g=0,E while(g-e>0){x=w.substr(e,g-e),++f[x],E}}multimap<int,C>c;for(auto t=f.end();--t!=f.begin();)if(F!="the"O"and"O"of"O"to"O"a"O"i"O"it"O"in"O"or"O"is")c.insert(pair<int,C>(G,F));auto t=--c.end();float a=0,A;L A=F/(76.0-G.length()),a=a>A?a:A;t=--c.end();S( );L S(\n|)<<"| "<<G;} </code></pre> <p>I've removed the full version, because I can't be bothered to keep updating it with my tweaks to the minimised version. See edit history if you're interested in the (possibly outdated) long version.</p>

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