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QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #276351 | #4385. Random | chunzhifeng | WA | 12ms | 3624kb | C++14 | 401b | 2023-12-05 20:15:56 | 2023-12-05 20:15:56 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsigned ll
#define endl "\n"
#define PII pair<int,int>
const ll INF=0x3f3f3f3f3f3f3f3f;
const int mod=1e9+7;
const int N=2e6+5;
void solve(){
int n,m; cin>>n>>m;
cout<<(n-m)*(mod+1)/2%mod<<endl;
}
int main(){
ios::sync_with_stdio(0);cin.tie(0);cout.tie(0);
int T=1; cin>>T;
while(T--) solve();
}
Details
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Test #1:
score: 0
Wrong Answer
time: 12ms
memory: 3624kb
input:
100000 42 30 6335 1161 19170 15725 11479 6401 26963 24465 5706 5322 23282 16828 9962 492 2996 2955 4828 609 32392 14605 3903 154 293 77 17422 1295 19719 177 5448 5383 14772 11539 1870 1213 25668 632 17036 9895 28704 23812 31323 30334 17674 4665 15142 7712 28254 6869 25548 2097 32663 95 20038 12860 8...
output:
705032745 429708497 218128084 674348376 -835473144 -273526777 479586513 946077681 -974836316 671074540 -377198861 894273933 625818464 846449909 -50520232 -859738101 592309629 82488118 -829567689 382205581 -131339138 578764916 919565885 -146681320 -968481493 239375724 779111129 -592630737 414366312 9...
result:
wrong answer 1st lines differ - expected: '6', found: '705032745'