View Compilation Error

0_0_14684559_12199.cpp:9:1: error: expected initializer before 'bool'
 bool vis[size];
 ^
0_0_14684559_12199.cpp: In function 'void init(int, int)':
0_0_14684559_12199.cpp:15:16: error: 'vis' was not declared in this scope
         memset(vis,0,sizeof(vis));
                ^
0_0_14684559_12199.cpp:18:28: error: 'sg' was not declared in this scope
          if(f[j] <= i) vis[sg[i-f[j]]] = 1;
                            ^
0_0_14684559_12199.cpp:24:17: error: 'sg' was not declared in this scope
                 sg[i] = j;
                 ^
0_0_14684559_12199.cpp: In function 'int main()':
0_0_14684559_12199.cpp:46:9: error: 'sg' was not declared in this scope
         sg[0] = 0;
         ^