Submission #7779

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
7779	2014-08-19 10:05:01	qja0950	다각형 (GA5_polygon)	C++98	100 / 100	0 ms	1088 KiB

polygon

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#include <stdio.h>
long long a, b;
int main() {
  long long result = 0;
  scanf("%lld %lld", &a, &b);
  if(a%2==1) a++;
  if(a==2) a=4;
  if(b%2==1) b--;
  if(b<a) printf("0");
  else{
    result = (a + b) * ( (b - a) / 2 + 1 ) / 2;
    printf("%lld", result);
  }
}
 
 
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• Subtask 1: 60 / 60
• Subtask 2: 10 / 10
• Subtask 3: 30 / 30