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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#623046 | #8723. 乘二 | bruteforce_ | RE | 1ms | 3592kb | C++20 | 1.3kb | 2024-10-09 09:47:42 | 2024-10-09 09:47:43 |
Judging History
answer
#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N=1e6+7,inf=1e18,mod=1e9+7;
int power(int x,int t)
{
int b=1;
while(t)
{
if(t&1) b=b*x%mod;
x=x*x%mod; t>>=1;
}
return b;
}
void O_o()
{
int n,k;
cin>>n>>k;
int mx=0;
vector<int> a(n+1),b(n+1);
for(int i=1; i<=n; i++)
{
cin>>a[i];
mx=max(mx,a[i]);
}
int cnt=0;
for(int i=1; i<=n; i++)
{
b[i]=a[i];
while(b[i]<=mx)
{
cnt++;
b[i]<<=1;
}
b[i]>>=1;
cnt--;
}
if(cnt<k)
{
priority_queue<int,vector<int>,greater<int>> q;
for(int i=1; i<=n; i++)
{
q.push(a[i]);
}
for(int i=1; i<=k; i++)
{
int u=q.top(); q.pop();
q.push(u*2%mod);
}
int ans=0;
while(q.size())
{
(ans+=q.top())%=mod;
q.pop();
}
cout<<ans<<"\n";
return;
}
else
{
k-=cnt;
int ans=0;
sort(b.begin(),b.end());
int t=k/n,p=k%n;
for(int i=1; i<=p; i++)
{
(ans+=b[i]*power(2,t+1)%mod)%=mod;
}
for(int i=p+1; i<=n; i++)
{
(ans+=b[i]*power(2,t)%mod)%=mod;
}
cout<<ans<<"\n";
}
}
signed main()
{
ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
cout<<fixed<<setprecision(12);
int T=1;
// cin>>T;
while(T--)
{
O_o();
}
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 3592kb
input:
3 3 7 2 1
output:
15
result:
ok 1 number(s): "15"
Test #2:
score: -100
Runtime Error
input:
200000 1605067 366760624 67854 93901 693975 27016 1046 10808 6533158 54778 500941023 77236442 32173 10431454 2 9726 1553148 89282 411182309 494073 131299543 249904771 7906930 353 9909 3632698 29156 1917186 303 737 1189004 22 1983 263 711 4106258 2070 36704 12524642 5192 123 2061 22887 66 380 1 10153...