#include
int main()
{
int a,b,c;
printf("please input three numbers:\n");
scanf("%d,%d,%d",&a,&b,&c);
if(a==b&&a==c)
printf("this trigon is dengbian\n");
else if(a==b||a==c||b==c)
printf("this trigon is dengyao\n");
else
printf("this trigon is budengbian\n");
return 0;
}
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