0_0_37868285_7183.cpp: In function 'int main()':
0_0_37868285_7183.cpp:26:20: error: 'read' was not declared in this scope
int n=read(),m=read();
^
0_0_37868285_7183.cpp:46:24: error: 'm' was not declared in this scope
for(int j=1;j<=m;j++)
^
0_0_37868285_7183.cpp:70:22: error: 'write' was not declared in this scope
write(ans);
^
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