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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 |
---|---|---|---|---|---|---|---|---|---|
#226923 | #3161. Another Coin Weighing Puzzle | SolitaryDream# | AC ✓ | 87ms | 11516kb | C++17 | 693b | 2023-10-26 18:40:40 | 2023-10-26 18:40:40 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,s,t) for(int i=(s),_t=(t); i<=_t; ++i)
#define DOR(i,s,t) for(int i=(s),_t=(t); i>=_t; --i)
typedef long long ll;
const int N=1e6+50;
const int Mod=998244353;
ll Fast(ll x,int b) {
ll t=1;
for(; b; b>>=1,x=x*x%Mod) if(b&1) t=t*x%Mod;
return t;
}
ll g[N];
int main() {
ios::sync_with_stdio(false);
cin.tie(nullptr);
int m,K;
cin >> m >> K;
FOR(i,1,K) g[i]=(Fast(K/i*2+1,m)-1)%Mod;
DOR(i,K,1) {
for(int j=i+i; j<=K; j+=i) {
g[i]=(g[i]-g[j])%Mod;
}
}
ll res=(g[1]+1)%Mod;
if(res<0) res+=Mod;
cout << res << '\n';
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3612kb
input:
2 1
output:
9
result:
ok single line: '9'
Test #2:
score: 0
Accepted
time: 0ms
memory: 3636kb
input:
2 2
output:
17
result:
ok single line: '17'
Test #3:
score: 0
Accepted
time: 1ms
memory: 3684kb
input:
10000 10000
output:
689223145
result:
ok single line: '689223145'
Test #4:
score: 0
Accepted
time: 0ms
memory: 3640kb
input:
9999 31
output:
986106162
result:
ok single line: '986106162'
Test #5:
score: 0
Accepted
time: 0ms
memory: 3652kb
input:
57 9817
output:
447253096
result:
ok single line: '447253096'
Test #6:
score: 0
Accepted
time: 0ms
memory: 3648kb
input:
501 499
output:
247755220
result:
ok single line: '247755220'
Test #7:
score: 0
Accepted
time: 15ms
memory: 4912kb
input:
97424 174829
output:
964884269
result:
ok single line: '964884269'
Test #8:
score: 0
Accepted
time: 0ms
memory: 3700kb
input:
11 13
output:
729153057
result:
ok single line: '729153057'
Test #9:
score: 0
Accepted
time: 16ms
memory: 5692kb
input:
200000 200000
output:
803771125
result:
ok single line: '803771125'
Test #10:
score: 0
Accepted
time: 0ms
memory: 3704kb
input:
199999 562
output:
865836540
result:
ok single line: '865836540'
Test #11:
score: 0
Accepted
time: 13ms
memory: 5868kb
input:
3539 189423
output:
530738158
result:
ok single line: '530738158'
Test #12:
score: 0
Accepted
time: 14ms
memory: 6372kb
input:
198324 173852
output:
963717515
result:
ok single line: '963717515'
Test #13:
score: 0
Accepted
time: 0ms
memory: 3704kb
input:
1 1
output:
3
result:
ok single line: '3'
Test #14:
score: 0
Accepted
time: 87ms
memory: 11436kb
input:
1000000 1000000
output:
800590912
result:
ok single line: '800590912'
Test #15:
score: 0
Accepted
time: 71ms
memory: 11516kb
input:
5034 999999
output:
946555033
result:
ok single line: '946555033'
Test #16:
score: 0
Accepted
time: 0ms
memory: 3568kb
input:
999998 2042
output:
713878368
result:
ok single line: '713878368'