0_0_20806275_26487.cpp:5:2: error: stray '\277' in program
for(l=2;l*l<=a;l++) 坑点所在处，如果改为for(l=2;l<a/2;l++) 是超时的！！！！！！！
^
0_0_20806275_26487.cpp:5:2: error: stray '\323' in program
0_0_20806275_26487.cpp:5:2: error: stray '\265' in program
0_0_20806275_26487.cpp:5:2: error: stray '\343' in program
0_0_20806275_26487.cpp:5:2: error: stray '\313' in program
0_0_20806275_26487.cpp:5:2: error: stray '\371' in program
0_0_20806275_26487.cpp:5:2: error: stray '\324' in program
0_0_20806275_26487.cpp:5:2: error: stray '\332' in program
0_0_20806275_26487.cpp:5:2: error: stray '\264' in program
0_0_20806275_26487.cpp:5:2: error: stray '\246' in program
0_0_20806275_26487.cpp:5:2: error: stray '\243' in program
0_0_20806275_26487.cpp:5:2: error: stray '\254' in program
0_0_20806275_26487.cpp:5:2: error: stray '\310' in program
0_0_20806275_26487.cpp:5:2: error: stray '\347' in program
0_0_20806275_26487.cpp:5:2: error: stray '\271' in program
0_0_20806275_26487.cpp:5:2: error: stray '\373' in program
0_0_20806275_26487.cpp:5:2: error: stray '\270' in program
0_0_20806275_26487.cpp:5:2: error: stray '\304' in program
0_0_20806275_26487.cpp:5:2: error: stray '\316' in program
0_0_20806275_26487.cpp:5:2: error: stray '\252' in program
0_0_20806275_26487.cpp:5:2: error: stray '\312' in program
0_0_20806275_26487.cpp:5:2: error: stray '\307' in program
0_0_20806275_26487.cpp:5:2: error: stray '\263' in program
0_0_20806275_26487.cpp:5:2: error: stray '\254' in program
0_0_20806275_26487.cpp:5:2: error: stray '\312' in program
0_0_20806275_26487.cpp:5:2: error: stray '\261' in program
0_0_20806275_26487.cpp:5:2: error: stray '\265' in program
0_0_20806275_26487.cpp:5:2: error: stray '\304' in program
0_0_20806275_26487.cpp:5:2: error: stray '\243' in program
0_0_20806275_26487.cpp:5:2: error: stray '\241' in program
0_0_20806275_26487.cpp:5:2: error: stray '\243' in program
0_0_20806275_26487.cpp:5:2: error: stray '\241' in program
0_0_20806275_26487.cpp:5:2: error: stray '\243' in program
0_0_20806275_26487.cpp:5:2: error: stray '\241' in program
0_0_20806275_26487.cpp:5:2: error: stray '\243' in program
0_0_20806275_26487.cpp:5:2: error: stray '\241' in program
0_0_20806275_26487.cpp:5:2: error: stray '\243' in program
0_0_20806275_26487.cpp:5:2: error: stray '\241' in program
0_0_20806275_26487.cpp:5:2: error: stray '\243' in program
0_0_20806275_26487.cpp:5:2: error: stray '\241' in program
0_0_20806275_26487.cpp:5:2: error: stray '\243' in program
0_0_20806275_26487.cpp:5:2: error: stray '\241' in program
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