Submission #3112288

Source Code Expand

#include<bits/stdc++.h>
using namespace std;
long long a,b,ans;
int main()
{
	cin>>a>>b;
	for(long long s=a;s<=b;s++)
	{
		ans+=(s*((s+1)*s/2)%1000000007)%1000000007;ans%=1000000007;
	}
	cout<<ans<<endl;
}

Submission Info

Submission Time
Task A - Counting on a Triangle
User RioBlu
Language C++14 (GCC 5.4.1)
Score 100
Code Size 216 Byte
Status AC
Exec Time 6 ms
Memory 764 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 6 ms 764 KB
subtask0_sample_02.txt AC 1 ms 256 KB
subtask0_sample_03.txt AC 1 ms 256 KB
subtask1_01.txt AC 1 ms 256 KB
subtask1_02.txt AC 1 ms 256 KB
subtask1_03.txt AC 1 ms 256 KB
subtask1_04.txt AC 1 ms 256 KB
subtask1_05.txt AC 1 ms 256 KB
subtask1_06.txt AC 1 ms 256 KB
subtask1_07.txt AC 1 ms 256 KB
subtask1_08.txt AC 1 ms 256 KB
subtask1_09.txt AC 1 ms 256 KB
subtask1_10.txt AC 1 ms 256 KB
subtask1_11.txt AC 1 ms 256 KB
subtask2_01.txt AC 6 ms 256 KB
subtask2_02.txt AC 6 ms 256 KB
subtask2_03.txt AC 1 ms 256 KB
subtask2_04.txt AC 2 ms 256 KB
subtask2_05.txt AC 1 ms 256 KB
subtask2_06.txt AC 2 ms 256 KB
subtask2_07.txt AC 2 ms 256 KB
subtask2_08.txt AC 2 ms 256 KB
subtask2_09.txt AC 5 ms 256 KB
subtask2_10.txt AC 5 ms 256 KB
subtask2_11.txt AC 5 ms 256 KB
subtask2_12.txt AC 5 ms 256 KB