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QOJ
| ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
|---|---|---|---|---|---|---|---|---|---|
| #459561 | #8833. Equalizer Ehrmantraut | ucup-team1231# | AC ✓ | 119ms | 3736kb | C++14 | 434b | 2024-06-30 07:21:26 | 2024-06-30 07:21:27 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int MOD=998244353;
ll qp(ll a,ll b) {
ll x=1; a%=MOD;
while(b) {
if(b&1) x=x*a%MOD;
a=a*a%MOD; b>>=1;
}
return x;
}
int main() {
int n,m; cin>>n>>m;
ll ans=0;
for(int i=2;i<=m;++i)
ans+=qp(m,n)-qp(m-i+1,n),ans%=MOD;
ans=ans*2+qp(m,n);
ans=(ans%MOD+MOD)%MOD;
cout<<ans<<"\n";
}
这程序好像有点Bug，我给组数据试试？
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3656kb
input:
1 3
output:
9
result:
ok 1 number(s): "9"
Test #2:
score: 0
Accepted
time: 0ms
memory: 3656kb
input:
2 2
output:
10
result:
ok 1 number(s): "10"
Test #3:
score: 0
Accepted
time: 0ms
memory: 3668kb
input:
69 42
output:
608932821
result:
ok 1 number(s): "608932821"
Test #4:
score: 0
Accepted
time: 0ms
memory: 3676kb
input:
102 156
output:
748401290
result:
ok 1 number(s): "748401290"
Test #5:
score: 0
Accepted
time: 3ms
memory: 3600kb
input:
4646 95641
output:
89806680
result:
ok 1 number(s): "89806680"
Test #6:
score: 0
Accepted
time: 19ms
memory: 3728kb
input:
42849 215151
output:
242217237
result:
ok 1 number(s): "242217237"
Test #7:
score: 0
Accepted
time: 100ms
memory: 3716kb
input:
786416 794116
output:
472898000
result:
ok 1 number(s): "472898000"
Test #8:
score: 0
Accepted
time: 96ms
memory: 3600kb
input:
963852 789456
output:
353211048
result:
ok 1 number(s): "353211048"
Test #9:
score: 0
Accepted
time: 49ms
memory: 3644kb
input:
696969 424242
output:
787990158
result:
ok 1 number(s): "787990158"
Test #10:
score: 0
Accepted
time: 15ms
memory: 3656kb
input:
1000000 123456
output:
533491028
result:
ok 1 number(s): "533491028"
Test #11:
score: 0
Accepted
time: 119ms
memory: 3588kb
input:
1000000 1000000
output:
572586375
result:
ok 1 number(s): "572586375"
Test #12:
score: 0
Accepted
time: 96ms
memory: 3640kb
input:
123456 1000000
output:
486967129
result:
ok 1 number(s): "486967129"
Test #13:
score: 0
Accepted
time: 0ms
memory: 3596kb
input:
789456 1
output:
1
result:
ok 1 number(s): "1"
Test #14:
score: 0
Accepted
time: 0ms
memory: 3668kb
input:
852516 2
output:
148946358
result:
ok 1 number(s): "148946358"
Test #15:
score: 0
Accepted
time: 5ms
memory: 3600kb
input:
1 953646
output:
40087733
result:
ok 1 number(s): "40087733"
Test #16:
score: 0
Accepted
time: 0ms
memory: 3736kb
input:
3 7686
output:
278212472
result:
ok 1 number(s): "278212472"
Extra Test:
score: 0
Extra Test Passed