{"trustable":true,"prependHtml":"\u003cstyle type\u003d\"text/css\"\u003e\n #problem-body \u003e pre {\n display: block;\n padding: 9.5px;\n margin: 0 0 10px;\n font-size: 13px;\n line-height: 1.42857143;\n word-break: break-all;\n word-wrap: break-word;\n color: #333;\n background: rgba(255, 255, 255, 0.5);\n border: 1px solid #ccc;\n border-radius: 6px;\n }\n\u003c/style\u003e\n","sections":[{"title":"","value":{"format":"HTML","content":"\u003cdiv id\u003d\"problem-body\"\u003e\n\t\u003cp\u003eJohnny has created a table which encodes the results of some operation -- a function of two arguments. But instead of a boring multiplication table of the sort you learn by heart at prep-school, he has created a GCD (greatest common divisor) table! So he now has a table (of height \u003cvar\u003ea\u003c/var\u003e and width \u003cvar\u003eb\u003c/var\u003e), indexed from (1, 1) to (\u003cvar\u003ea\u003c/var\u003e, \u003cvar\u003eb\u003c/var\u003e), and with the value of field (\u003cvar\u003ei\u003c/var\u003e, \u003cvar\u003ej\u003c/var\u003e) equal to gcd(\u003cvar\u003ei\u003c/var\u003e, \u003cvar\u003ej\u003c/var\u003e). He wants to know how many times he has used prime numbers when writing the table.\u003c/p\u003e\r\n\u003ch3\u003eInput\u003c/h3\u003e\r\n\u003cp\u003eFirst, \u003cvar\u003et\u003c/var\u003e ≤ 10, the number of test cases. Each test case consists of two integers, 1 ≤ \u003cvar\u003ea\u003c/var\u003e, \u003cvar\u003eb\u003c/var\u003e \u0026lt; 10\u003csup\u003e7\u003c/sup\u003e.\u003c/p\u003e\r\n\u003ch3\u003eOutput\u003c/h3\u003e\r\n\u003cp\u003eFor each test case write one number - the number of prime numbers Johnny wrote in that test case.\u003c/p\u003e\r\n\u003ch3\u003eExample\u003c/h3\u003e\r\n\u003cdiv\u003e\u003ctable class\u003d\"vjudge_sample\"\u003e\n\u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eInput\u003c/th\u003e\n \u003cth\u003eOutput\u003c/th\u003e\n \u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cpre\u003e2\r\n10 10\r\n100 100\r\n\r\n\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e30\r\n2791\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n\u003c/div\u003e\n\u003c/div\u003e"}}]}