0_0_19198814_23429.cpp: In function 'int main()':
0_0_19198814_23429.cpp:32:24: error: 'x' was not declared in this scope
scanf ("%d%d",&x,&y);
^
0_0_19198814_23429.cpp:32:27: error: 'y' was not declared in this scope
scanf ("%d%d",&x,&y);
^
0_0_19198814_23429.cpp:42:18: error: 'b' was not declared in this scope
fa[a]=fa[b]=0;
^
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