<script type ="text/javescript">
var n = 0;
/var s = 0;
for ( var a =1; a<51;a++  ){
for(var b = 1;  b<101; b++){
    for (var c = 1;c<201; c++ ){
        if (a * 2 +b *1 + c * (0.5) ==100 &&  a +b+c ==100){
        n++;
            s+=(a+"只公鸡,"+b+"只母鸡,"+c+"只小鸡"+ "||")
        }
    }
   }
}alert(n);
alert(s);
</script>

 

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