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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#141210 | #6531. Base Station Construction | cy1999 | TL | 2ms | 7776kb | C++11 | 2.1kb | 2023-08-17 09:39:40 | 2023-08-17 09:39:43 |
Judging History
answer
#include<bits/stdc++.h>
#define int long long
using namespace std;
const int N=5e5+5;
int t,n,m;
int f[N][30];
int a[N];
map<int ,int> q;
struct node
{
int l,r;
}w[N];
void yuchuli()
{
for(int i=1;i<=n;i++)
{
f[i][0]=a[i];
}
int p=log(n)/log(2);
for(int j=1;j<=p;j++)
{
for(int i=1;i<=n-(1<<j)+1;i++)
{
f[i][j]=min(f[i][j-1],f[i+(1<<(j-1))][j-1]);
}
}
}
int ask(int l,int r)
{
int p=log(r-l+1)/log(2);
return min(f[l][p],f[r-(1<<p)+1][p]);
}
//int find1(int l,int r,int p)
//{
// if(p==m+1)
// {
// return ask(l,r);
// }
// if(r<w[p].l)
// {
// return ask(l,r)+find1(w[p].l,w[p].r,p+1);
// }
// if(w[p].l>=l&&w[p].r<=r)
// {
// return find1(w[p].l,w[p].r,p+1);
// }
//
//}
int find2(int l,int r,int p)
{
if(p==m)
{
if(!l&&!r)
{
return ask(w[p].l,w[p].r );
}
int ans1=ask(l,w[p].l)+ask(r,w[p].r);
int ans2=ask(w[p].l,r);
return min(ans1,ans2);
}
if(r<w[p].l)
{
if(q[p])
{
return q[p];
}
int num=ask(l,r);
if(w[p+1].l>w[p].r)
{
if(!l&&!r)
{
return q[p]=ask(w[p].l,w[p].r)+find2(0,0,p+1);
}
return ask(l,r)+ask(w[p].l,w[p].r)+find2(0,0,p+1);
}
if(!l&&!r)
{
return q[p]=find2(w[p].l,w[p].r,p+1);
}
return ask(l,r)+find2(w[p].l,w[p].r,p+1);
}
if(w[p].l>=l&&w[p].r<=r)
{
if(w[p+1].l>w[p].r)
{
return ask(w[p].l,w[p].r)+find2(0,0,p+1);
}
return find2(w[p].l,w[p].r,p+1);
}
if(w[p+1].l>w[p].r)
{
int ans1=ask(l,w[p].l)+ask(r,w[p].r);
int ans2=ask(w[p].l,r);
return min(ans1,ans2)+find2(0,0,p+1);
}
if(w[p+1].l>r)
{
return ask(l,r)+find2(r,w[p].r,p+1);
}
int ans1=ask(l,r)+find2(r,w[p].r,p+1);
int ans2=find2(w[p].l,r,p+1);
int ans=min(ans1,ans2);
return ans;
}
signed main()
{
std::ios::sync_with_stdio(false);
cin.tie(0),cout.tie(0);
cin>>t;
while(t--)
{
q.clear();
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>a[i];
}
yuchuli();
cin>>m;
for(int i=1;i<=m;i++)
{
cin>>w[i].l>>w[i].r;
}
a[n+1]=0;
w[m+1].l=w[m+1].r=n+1;
int ans=find2(0,0,1);
cout<<ans<<endl;
}
}
Details
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Test #1:
score: 100
Accepted
time: 2ms
memory: 7776kb
input:
2 5 3 2 4 1 100 3 1 3 2 4 5 5 5 7 3 4 2 2 3 1 4 2 3 4 5
output:
102 5
result:
ok 2 number(s): "102 5"
Test #2:
score: -100
Time Limit Exceeded
input:
6201 12 88 78 46 95 84 98 55 3 68 42 6 18 19 6 9 10 11 12 12 8 11 8 12 2 3 2 3 1 5 9 9 7 8 6 11 2 4 12 12 2 4 2 9 7 10 8 8 1 7 6 11 5 76 27 48 66 61 2 1 4 3 5 8 64 81 20 6 86 9 4 55 1 7 7 9 1 43 18 81 11 22 9 61 83 14 5 6 2 6 5 8 1 4 9 9 9 9 7 7 2 5 8 9 5 6 4 8 5 8 9 9 6 6 10 66 41 84 7 80 31 22 96 ...
output:
61 48 4 28 131 68 23 3 44 165 118 52 68 69 188 48 117 89 60 98 30 23 1 12 136 93 290 216 94 150 316 57 46 18 17 24 10 152 34 47 35 115 48 75 107 55 16 126 110 29 103 47 336 192 111 13 430 34 65 16 30 33 52 69 72 140 81 147 106 20 82 57 85 58 211 53 7 17 192 82 189 100 96 24 171 62 139 12 19 74 133 8...