Submission #2816

#TimeUsernameProblemLanguageResultExecution timeMemory
2816gs13105다각형 (GA5_polygon)C++98
0 / 100
0 ms1088 KiB
#include <stdio.h> int main() { long long a,b,n; scanf("%lld%lld",&a,&b); if(a%2==1) a++; n=(b-a)/2+1; printf("%lld",n*(a+n-1)); return 0; }
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