0_0_23181590_12950.cpp: In function 'int main()':
0_0_23181590_12950.cpp:6:17: error: 'scanf' was not declared in this scope
scanf("%d\n",&z);
^
0_0_23181590_12950.cpp:23:23: error: 'printf' was not declared in this scope
printf("yes\n");
^
0_0_23181590_12950.cpp:25:22: error: 'printf' was not declared in this scope
printf("no\n");
^
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