QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #209077 | #4385. Random | ucup-team1001 | WA | 69ms | 3644kb | C++14 | 456b | 2023-10-10 09:24:28 | 2023-10-10 09:24:28 |
Judging History
answer
#include<bits/stdc++.h>
const int maxn=2e5+5;
const int mod=998244353;
long long pows(long long x,long long k)
{
long long cnt=1;
while(k){
if(k&1){
cnt*=x;
cnt%=mod;
}
k>>=1;
x*=x;
x%=mod;
}
}
int main()
{
int t;
std::cin>>t;
while(t--){
long long n,m;
std::cin>>n>>m;
if((n-m)%2==0){
std::cout<<(n-m)/2<<std::endl;
}
else{
std::cout<<(n-m)*pows(2,mod-2)<<std::endl;
}
}
return 0;
}
Details
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Test #1:
score: 0
Wrong Answer
time: 69ms
memory: 3644kb
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:
6 2587 1722 2539 1249 192 3227 4735 20 2109 8893 1874 108 8063 9771 32 1616 328 12518 3570 2446 494 6504 3715 10692 11725 16284 3589 3853 13375 4640 10174 119 49 7940 1820 4580 4510 6959 10422 3503 2065 3458 1278 777 725 6651 306 7018 3194 1361 1410 6387 5835 4643 693 3926 220 5602 1939 5348 4424 99...
result:
wrong answer 3rd lines differ - expected: '500001726', found: '1722'