function showerror(){
     layer.msg("请输入正确的数值", {icon: 2});
}
var __Ox63f2d=["\x76\x61\x6C\x75\x65","\x6E\x31","\x67\x65\x74\x45\x6C\x65\x6D\x65\x6E\x74\x42\x79\x49\x64","\x61\x31","\x64\x31","","\u8BF7\u8F93\u5165\u6570\u503C","\x61\x6E","\x6E\x68"];function calc(){var _0xb921x2=document[__Ox63f2d[0x2]](__Ox63f2d[0x1])[__Ox63f2d[0x0]];var _0xb921x3=document[__Ox63f2d[0x2]](__Ox63f2d[0x3])[__Ox63f2d[0x0]];var _0xb921x4=document[__Ox63f2d[0x2]](__Ox63f2d[0x4])[__Ox63f2d[0x0]];if((_0xb921x2== __Ox63f2d[0x5]&& _0xb921x3== __Ox63f2d[0x5]&& _0xb921x4== __Ox63f2d[0x5])|| (_0xb921x2== __Ox63f2d[0x5]|| _0xb921x3== __Ox63f2d[0x5]|| _0xb921x4== __Ox63f2d[0x5])){showerror(__Ox63f2d[0x6])}else {var _0xb921x5=((_0xb921x2- 1)* _0xb921x4);var _0xb921x6=eval(_0xb921x3)+ eval(_0xb921x5);document[__Ox63f2d[0x2]](__Ox63f2d[0x7])[__Ox63f2d[0x0]]= (eval(_0xb921x3)+ eval(_0xb921x5));var _0xb921x7=2* _0xb921x3;var _0xb921x8=(_0xb921x2/ 2);var _0xb921x9=eval(_0xb921x7)+ eval(_0xb921x5);document[__Ox63f2d[0x2]](__Ox63f2d[0x8])[__Ox63f2d[0x0]]= _0xb921x8* _0xb921x9}}