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Submission #7822

# Submission time Handle Problem Language Result Execution time Memory
7822 2014-08-19T10:38:02 Z gs13073 다각형 (GA5_polygon) C++
100 / 100
 0 ms 1088 KB 
#include<stdio.h>

int main()
{
  long long t,a,b;
  scanf("%lld %lld",&a,&b);
  if(b<4){printf("0");return 0;}
  if(a==b){printf("%lld",a%2?0:a);return 0;}
  if(a<4)a=4;
  if(a%2)a++;
  if(b<4)b=4;
  if(b%2)b--;
  a/=2;b/=2;
  t=b*(b+1)/2-a*(a-1)/2;
  printf("%lld",t*2);
  return 0;
}

Subtask #1
60.0 / 60.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1088 KB Output is correct
2 Correct 0 ms 1088 KB Output is correct
3 Correct 0 ms 1088 KB Output is correct
4 Correct 0 ms 1088 KB Output is correct
5 Correct 0 ms 1088 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1088 KB Output is correct
2 Correct 0 ms 1088 KB Output is correct
3 Correct 0 ms 1088 KB Output is correct
4 Correct 0 ms 1088 KB Output is correct
5 Correct 0 ms 1088 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 1088 KB Output is correct
2 Correct 0 ms 1088 KB Output is correct
3 Correct 0 ms 1088 KB Output is correct
4 Correct 0 ms 1088 KB Output is correct
5 Correct 0 ms 1088 KB Output is correct