0_0_14681247_27806.cpp: In function 'int check()':
0_0_14681247_27806.cpp:12:27: error: 'memset' was not declared in this scope
memset(vis,0,sizeof(vis));
^
0_0_14681247_27806.cpp:27:27: error: 'memset' was not declared in this scope
memset(vis,0,sizeof(vis));
^
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