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View Compilation Error

0_0_16393665_462.cpp:71:1: error: stray '\' in program
 int graham(int n,point* p,point* convex,int maxsize=1,int dir=1)  /\n必须大于3
 ^
0_0_16393665_462.cpp:71:1: error: stray '\345' in program
0_0_16393665_462.cpp:71:1: error: stray '\277' in program
0_0_16393665_462.cpp:71:1: error: stray '\205' in program
0_0_16393665_462.cpp:71:1: error: stray '\351' in program
0_0_16393665_462.cpp:71:1: error: stray '\241' in program
0_0_16393665_462.cpp:71:1: error: stray '\273' in program
0_0_16393665_462.cpp:71:1: error: stray '\345' in program
0_0_16393665_462.cpp:71:1: error: stray '\244' in program
0_0_16393665_462.cpp:71:1: error: stray '\247' in program
0_0_16393665_462.cpp:71:1: error: stray '\344' in program
0_0_16393665_462.cpp:71:1: error: stray '\272' in program
0_0_16393665_462.cpp:71:1: error: stray '\216' in program
0_0_16393665_462.cpp:71:67: error: expected initializer before '/' token
 int graham(int n,point* p,point* convex,int maxsize=1,int dir=1)  /\n必须大于3
                                                                   ^
0_0_16393665_462.cpp: In function 'int main()':
0_0_16393665_462.cpp:96:35: error: 'graham' was not declared in this scope
             int num = graham(N,P,c);
                                   ^


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