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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 |
---|---|---|---|---|---|---|---|---|---|
#738759 | #9167. Coprime Array | ucup-team134# | RE | 0ms | 4164kb | C++17 | 1.5kb | 2024-11-12 19:52:12 | 2024-11-12 19:52:22 |
Judging History
answer
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define f first
#define s second
#define sz(x) (int)(x).size()
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define ios ios_base::sync_with_stdio(false);cin.tie(NULL)
#define ld long double
#define li __int128
using namespace std;
mt19937 rng(time(NULL));
int mod=0;
int add(int a,int b){
a+=b;
if(a>=mod)
a-=mod;
return a;
}
int sub(int a,int b){
a-=b;
if(a<0)
a+=mod;
return a;
}
int mul(int a,int b){
return (long long)a*b%mod;
}
int pwrmod(int x,int k){
int ans=1;
for(;k;k>>=1,x=mul(x,x))
if(k&1)
ans=mul(ans,x);
return ans;
}
int main()
{
int s,x;
cin >> s >> x;
if(__gcd(s,x)==1){
printf("1\n%i\n",s);
return 0;
}
vector<int> ps;
int tr=x;
for(int i=2;i*i<=tr;i++){
if(tr%i==0){
ps.pb(i);
while(tr%i==0)tr/=i;
}
}
if(tr!=1)ps.pb(tr);
auto solve2=[&](){
int a=0;
int c=1;
for(auto p:ps){
int ost=s%p;
ost=(p-ost)%p;
int b=1;
if((b+ost)%p==0){
b++;
}
assert(b<p);
mod=p;
int treba=mul(sub(b,a),pwrmod(c,mod-2));
a+=c*treba;
c*=p;
}
assert(__gcd(a,x)==1);
assert(__gcd(abs(a-s),x)==1);
vector<int> ret={a,-(a-s)};
return ret;
};
vector<int> ans;
if(ps[0]==2&&(s%2!=0)){
s--;
ans=solve2();
ans.pb(1);
}
else{
ans=solve2();
}
printf("%i\n",sz(ans));
for(auto p:ans)printf("%i ",p);
printf("\n");
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 3740kb
input:
9 6
output:
3 1 7 1
result:
ok Correct
Test #2:
score: 0
Accepted
time: 0ms
memory: 4088kb
input:
14 34
output:
2 1 13
result:
ok Correct
Test #3:
score: 0
Accepted
time: 0ms
memory: 3800kb
input:
1000000000 223092870
output:
2 148728581 851271419
result:
ok Correct
Test #4:
score: 0
Accepted
time: 0ms
memory: 3788kb
input:
2 1000000000
output:
2 1 1
result:
ok Correct
Test #5:
score: 0
Accepted
time: 0ms
memory: 4164kb
input:
649557664 933437700
output:
2 83981 649473683
result:
ok Correct
Test #6:
score: 0
Accepted
time: 0ms
memory: 4080kb
input:
33396678 777360870
output:
2 1 33396677
result:
ok Correct
Test #7:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
48205845 903124530
output:
3 18811 48187033 1
result:
ok Correct
Test #8:
score: 0
Accepted
time: 0ms
memory: 4064kb
input:
251037078 505905400
output:
2 1 251037077
result:
ok Correct
Test #9:
score: 0
Accepted
time: 0ms
memory: 3796kb
input:
30022920 172746860
output:
2 1 30022919
result:
ok Correct
Test #10:
score: 0
Accepted
time: 0ms
memory: 3808kb
input:
63639298 808058790
output:
2 248711 63390587
result:
ok Correct
Test #11:
score: 0
Accepted
time: 0ms
memory: 3804kb
input:
76579017 362768406
output:
3 1 76579015 1
result:
ok Correct
Test #12:
score: 0
Accepted
time: 0ms
memory: 4084kb
input:
40423669 121437778
output:
3 1 40423667 1
result:
ok Correct
Test #13:
score: 0
Accepted
time: 0ms
memory: 3808kb
input:
449277309 720915195
output:
2 1 449277308
result:
ok Correct
Test #14:
score: -100
Runtime Error
input:
81665969 919836918