0_0_16287018_32093.cpp: In function 'int main()':
0_0_16287018_32093.cpp:4:28: error: 'scanf' was not declared in this scope
while(~scanf ("%d%d",&m,&n)){
^
0_0_16287018_32093.cpp:17:19: error: 'printf' was not declared in this scope
printf("%d",a[0]);
^
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