QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#738845 | #9167. Coprime Array | ucup-team134# | AC ✓ | 0ms | 4088kb | C++17 | 1.7kb | 2024-11-12 20:05:00 | 2024-11-12 20:05:03 |
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;
}
vector<int> solve(int s,int x){
if(__gcd(s,x)==1){
return {s};
}
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%p),pwrmod(c%p,mod-2));
a+=c*treba;
c*=p;
}
//printf("%i\n",a);
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();
}
return ans;
}
int main()
{
/*while(1){
int s=rng()%1000+2,x=rng()%1000+2;
printf("%i %i\n",s,x);
solve(s,x);
}*/
int s,x;
cin >> s >> x;
auto ans=solve(s,x);
printf("%i\n",sz(ans));
for(auto p:ans)printf("%i ",p);
printf("\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: 0ms
memory: 3800kb
input:
9 6
output:
3 1 7 1
result:
ok Correct
Test #2:
score: 0
Accepted
time: 0ms
memory: 4080kb
input:
14 34
output:
2 1 13
result:
ok Correct
Test #3:
score: 0
Accepted
time: 0ms
memory: 3816kb
input:
1000000000 223092870
output:
2 148728581 851271419
result:
ok Correct
Test #4:
score: 0
Accepted
time: 0ms
memory: 4088kb
input:
2 1000000000
output:
2 1 1
result:
ok Correct
Test #5:
score: 0
Accepted
time: 0ms
memory: 4088kb
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: 3756kb
input:
48205845 903124530
output:
3 18811 48187033 1
result:
ok Correct
Test #8:
score: 0
Accepted
time: 0ms
memory: 3892kb
input:
251037078 505905400
output:
2 1 251037077
result:
ok Correct
Test #9:
score: 0
Accepted
time: 0ms
memory: 3812kb
input:
30022920 172746860
output:
2 1 30022919
result:
ok Correct
Test #10:
score: 0
Accepted
time: 0ms
memory: 3792kb
input:
63639298 808058790
output:
2 248711 63390587
result:
ok Correct
Test #11:
score: 0
Accepted
time: 0ms
memory: 3856kb
input:
76579017 362768406
output:
3 1 76579015 1
result:
ok Correct
Test #12:
score: 0
Accepted
time: 0ms
memory: 3740kb
input:
40423669 121437778
output:
3 1 40423667 1
result:
ok Correct
Test #13:
score: 0
Accepted
time: 0ms
memory: 4088kb
input:
449277309 720915195
output:
2 1 449277308
result:
ok Correct
Test #14:
score: 0
Accepted
time: 0ms
memory: 3800kb
input:
81665969 919836918
output:
3 68069 81597899 1
result:
ok Correct
Test #15:
score: 0
Accepted
time: 0ms
memory: 3800kb
input:
470578680 280387800
output:
2 1 470578679
result:
ok Correct
Test #16:
score: 0
Accepted
time: 0ms
memory: 4088kb
input:
58450340 803305503
output:
2 1 58450339
result:
ok Correct
Test #17:
score: 0
Accepted
time: 0ms
memory: 3896kb
input:
125896113 323676210
output:
3 59281 125836831 1
result:
ok Correct
Test #18:
score: 0
Accepted
time: 0ms
memory: 3808kb
input:
381905348 434752500
output:
2 1 381905347
result:
ok Correct
Test #19:
score: 0
Accepted
time: 0ms
memory: 3800kb
input:
78916498 653897673
output:
1 78916498
result:
ok Correct
Test #20:
score: 0
Accepted
time: 0ms
memory: 4060kb
input:
35787885 270845190
output:
3 1 35787883 1
result:
ok Correct
Extra Test:
score: 0
Extra Test Passed