QOJ.ac
QOJ
| ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
|---|---|---|---|---|---|---|---|---|---|
| #457788 | #8833. Equalizer Ehrmantraut | PhantomThreshold# | AC ✓ | 131ms | 3568kb | C++17 | 432b | 2024-06-29 14:03:22 | 2024-06-29 14:03:23 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const ll mod=998244353;
ll ksm(ll a,ll x){
ll ret=1;
for (;x;x>>=1,a=a*a%mod) if (x&1) ret=ret*a%mod;
return ret;
}
ll n,m;
int main(){
ios_base::sync_with_stdio(false);
cin >> n >> m;
ll ans=0;
for (ll A=1;A<=m;A++) ans=(ans+ksm(m,n)+mod-ksm(A,n))%mod;
ans=ans*2%mod;
ans=(ans+ksm(m,n))%mod;
cout << ans << "\n";
return 0;
}
这程序好像有点Bug，我给组数据试试？
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 3460kb
input:
1 3
output:
9
result:
ok 1 number(s): "9"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3508kb
input:
2 2
output:
10
result:
ok 1 number(s): "10"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3432kb
input:
69 42
output:
608932821
result:
ok 1 number(s): "608932821"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3428kb
input:
102 156
output:
748401290
result:
ok 1 number(s): "748401290"
Test #5:
score: 0
Accepted
time: 6ms
memory: 3496kb
input:
4646 95641
output:
89806680
result:
ok 1 number(s): "89806680"
Test #6:
score: 0
Accepted
time: 20ms
memory: 3428kb
input:
42849 215151
output:
242217237
result:
ok 1 number(s): "242217237"
Test #7:
score: 0
Accepted
time: 106ms
memory: 3548kb
input:
786416 794116
output:
472898000
result:
ok 1 number(s): "472898000"
Test #8:
score: 0
Accepted
time: 106ms
memory: 3500kb
input:
963852 789456
output:
353211048
result:
ok 1 number(s): "353211048"
Test #9:
score: 0
Accepted
time: 54ms
memory: 3504kb
input:
696969 424242
output:
787990158
result:
ok 1 number(s): "787990158"
Test #10:
score: 0
Accepted
time: 17ms
memory: 3504kb
input:
1000000 123456
output:
533491028
result:
ok 1 number(s): "533491028"
Test #11:
score: 0
Accepted
time: 131ms
memory: 3484kb
input:
1000000 1000000
output:
572586375
result:
ok 1 number(s): "572586375"
Test #12:
score: 0
Accepted
time: 105ms
memory: 3504kb
input:
123456 1000000
output:
486967129
result:
ok 1 number(s): "486967129"
Test #13:
score: 0
Accepted
time: 0ms
memory: 3484kb
input:
789456 1
output:
1
result:
ok 1 number(s): "1"
Test #14:
score: 0
Accepted
time: 1ms
memory: 3568kb
input:
852516 2
output:
148946358
result:
ok 1 number(s): "148946358"
Test #15:
score: 0
Accepted
time: 2ms
memory: 3476kb
input:
1 953646
output:
40087733
result:
ok 1 number(s): "40087733"
Test #16:
score: 0
Accepted
time: 1ms
memory: 3496kb
input:
3 7686
output:
278212472
result:
ok 1 number(s): "278212472"
Extra Test:
score: 0
Extra Test Passed