This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
/**
____ ____ ____ ____ ____
||O |||M |||E |||G |||A ||
||__|||__|||__|||__|||__||
|/__\|/__\|/__\|/__\|/__\|
Se spune ca sunt vise
Si ca nu pot fi atinse
Sunt primele ce le vezi cand becurile-s stinse
Dar si cand is aprinse
Cand te trezesti cu ele-n gand
Si le vizualizezi din nou rand pe rand
Se spune ca visezi daca stai si-ti imaginezi
Ca esti altfel decat ceilalti, dar nu tre sa crezi
Continua sa lupti altfel imi vei da dreptate
Vei bea pe spate cu gandul la vise spulberate
- "Vise" - Nane -
**/
#include<bits/stdc++.h>
using namespace std;
ifstream fin("window.in");
ofstream fout("window.out");
long long q,p,s,nr,f[100005],inv[100005],invf[100005],pi(1),fr[1000005];
const long long mod=1e9+7;
int main(){
ios_base::sync_with_stdio(false);
cin.tie(nullptr);
cout.tie(nullptr);
f[0]=f[1]=inv[0]=inv[1]=invf[0]=invf[1]=1;
for(long long i=2;i<=100001;i++){
f[i]=(i*f[i-1])%mod;
inv[i]=(inv[mod%i]*(mod-mod/i))%mod;
invf[i]=(inv[i]*invf[i-1])%mod;
}
cin>>q>>p;
for(long long i=1;i<=q;i++){
long long o,x;
cin>>o>>x;
s+=((o)?-x:x);
nr+=((o)?-1:1);
pi*=f[fr[x]];
pi%=mod;
fr[x]+=((o)?-1:1);
pi*=invf[fr[x]];
if(s>p)cout<<"-1\n";
else{
cout<<(((f[p-s+nr]*invf[p-s])%mod)*pi)%mod<<"\n";
}
}
return 0;
}
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |
# | Verdict | Execution time | Memory | Grader output |
---|
Fetching results... |