0_0_18426394_11358.cpp: In function 'int main()':
0_0_18426394_11358.cpp:4:30: error: 'scanf' was not declared in this scope
while(scanf("%d %d",&m,&n)!=-1)
^
0_0_18426394_11358.cpp:18:28: error: 'printf' was not declared in this scope
printf("%d %d\n",x,y);
^
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