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View Compilation Error

0_0_13068313_1663.cpp: In function 'void init()':
0_0_13068313_1663.cpp:12:36: error: 'memset' was not declared in this scope
 #define clr(a) memset(a,0,sizeof(a))
                                    ^
0_0_13068313_1663.cpp:15:3: note: in expansion of macro 'clr'
   clr(map);clr(e);clr(edge);
   ^
0_0_13068313_1663.cpp: In function 'void precalc()':
0_0_13068313_1663.cpp:12:36: error: 'memset' was not declared in this scope
 #define clr(a) memset(a,0,sizeof(a))
                                    ^
0_0_13068313_1663.cpp:47:3: note: in expansion of macro 'clr'
   clr(gu);
   ^
0_0_13068313_1663.cpp: In function 'void calcg()':
0_0_13068313_1663.cpp:12:36: error: 'memset' was not declared in this scope
 #define clr(a) memset(a,0,sizeof(a))
                                    ^
0_0_13068313_1663.cpp:56:3: note: in expansion of macro 'clr'
   clr(g);clr(b); 
   ^
0_0_13068313_1663.cpp: In function 'void calch()':
0_0_13068313_1663.cpp:12:36: error: 'memset' was not declared in this scope
 #define clr(a) memset(a,0,sizeof(a))
                                    ^
0_0_13068313_1663.cpp:76:3: note: in expansion of macro 'clr'
   clr(d);clr(h);clr(f);
   ^


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