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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 PuzzleSolitaryDream#AC ✓87ms11516kbC++17693b2023-10-26 18:40:402023-10-26 18:40:40

Judging History

你现在查看的是最新测评结果

  • [2023-10-26 18:40:40]
  • 评测
  • 测评结果:AC
  • 用时:87ms
  • 内存:11516kb
  • [2023-10-26 18:40:40]
  • 提交

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'