Submission #2668117

Source Code Expand

a = int(input())
b = int(input())
def f(n): return ((n*(n+1)//2)**2+(n*(n+1)*(2*n+1))//6)//2
print((f(b)-f(a-1))%(10**9+7))

Submission Info

Submission Time
Task A - Counting on a Triangle
User Clamperl
Language Python (3.4.3)
Score 100
Code Size 126 Byte
Status AC
Exec Time 17 ms
Memory 2940 KB

Judge Result

Set Name Sample Subtask1 All
Score / Max Score 0 / 0 20 / 20 80 / 80
Status
AC × 3
AC × 13
AC × 26
Set Name Test Cases
Sample subtask0_sample_01.txt, subtask0_sample_02.txt, subtask0_sample_03.txt
Subtask1 subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask0_sample_01.txt, subtask0_sample_02.txt
All subtask0_sample_01.txt, subtask0_sample_02.txt, subtask0_sample_03.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask2_01.txt, subtask2_02.txt, subtask2_03.txt, subtask2_04.txt, subtask2_05.txt, subtask2_06.txt, subtask2_07.txt, subtask2_08.txt, subtask2_09.txt, subtask2_10.txt, subtask2_11.txt, subtask2_12.txt
Case Name Status Exec Time Memory
subtask0_sample_01.txt AC 17 ms 2940 KB
subtask0_sample_02.txt AC 17 ms 2940 KB
subtask0_sample_03.txt AC 17 ms 2940 KB
subtask1_01.txt AC 17 ms 2940 KB
subtask1_02.txt AC 17 ms 2940 KB
subtask1_03.txt AC 17 ms 2940 KB
subtask1_04.txt AC 17 ms 2940 KB
subtask1_05.txt AC 17 ms 2940 KB
subtask1_06.txt AC 17 ms 2940 KB
subtask1_07.txt AC 17 ms 2940 KB
subtask1_08.txt AC 17 ms 2940 KB
subtask1_09.txt AC 17 ms 2940 KB
subtask1_10.txt AC 17 ms 2940 KB
subtask1_11.txt AC 17 ms 2940 KB
subtask2_01.txt AC 17 ms 2940 KB
subtask2_02.txt AC 17 ms 2940 KB
subtask2_03.txt AC 17 ms 2940 KB
subtask2_04.txt AC 17 ms 2940 KB
subtask2_05.txt AC 17 ms 2940 KB
subtask2_06.txt AC 17 ms 2940 KB
subtask2_07.txt AC 17 ms 2940 KB
subtask2_08.txt AC 17 ms 2940 KB
subtask2_09.txt AC 17 ms 2940 KB
subtask2_10.txt AC 17 ms 2940 KB
subtask2_11.txt AC 17 ms 2940 KB
subtask2_12.txt AC 17 ms 2940 KB