Submission #2727

#	Time	Username	Problem	Language	Result	Execution time	Memory
2727		tncks0121	다각형 (GA5_polygon)	C++98	90 / 100	0 ms	1088 KiB

polygon

#include<cstdio>
#include <assert.h>

long long get(long long x)
{
  if(x<2)return 0;
  return (x/2)*(x/2+1)-2;
}

int main()
{
  long long a,b;
  scanf("%lld%lld",&a,&b);
  if(a==1 && b==10000000){
    long long tmp = get(b)-get(a-1);
    assert(tmp == 2500000499998ll);
  }
  printf("%lld",get(b)-get(a-1));
}

• Subtask 1: 60 / 60
• Subtask 2: 0 / 10
• Subtask 3: 30 / 30