0_0_34430220_5083.cpp: In function 'int main()':
0_0_34430220_5083.cpp:49:34: error: expected primary-expression before '<' token
printf("%d\n",cal(m+1)-cal(n));<span style="white-space:pre"> </span>//!!!
^
0_0_34430220_5083.cpp:49:35: error: 'span' was not declared in this scope
printf("%d\n",cal(m+1)-cal(n));<span style="white-space:pre"> </span>//!!!
^
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