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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#141180 | #6531. Base Station Construction | cy1999 | TL | 1ms | 30364kb | C++11 | 1.4kb | 2023-08-17 09:15:30 | 2023-08-17 09:15:32 |
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<pair<int,int> ,int> q[N];
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(q[p][make_pair(l,r)])
{
return q[p][make_pair(l,r)];
}
if(p==m+1)
{
return q[p][make_pair(l,r)]=ask(l,r);
}
if(r<w[p].l)
{
return q[p][make_pair(l,r)]=ask(l,r)+find1(w[p].l,w[p].r,p+1);
}
if(w[p].l>=l&&w[p].r<=r)
{
return q[p][make_pair(l,r)]=find1(w[p].l,w[p].r,p+1);
}
int ans1=ask(l,r)+find1(w[p].l,w[p].r,p+1);
//int ans2=ask(w[p].l,w[p].r)+find1(l,r,p+1);
int ans3=find1(w[p].l,r,p+1);
int ans=min(ans1,ans3);
return q[p][make_pair(l,r)]=ans;
}
signed main()
{
std::ios::sync_with_stdio(false);
cin.tie(0),cout.tie(0);
cin>>t;
while(t--)
{
cin>>n;
for(int i=1;i<=n;i++)
{
cin>>a[i];
q[i].clear();
}
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=find1(0,0,1);
cout<<ans<<endl;
}
}
Details
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Test #1:
score: 100
Accepted
time: 1ms
memory: 30364kb
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 19 167 68 23 2 43 113 74 86 68 48 185 32 59 89 98 84 35 23 1 6 123 93 236 145 56 100 100 179 46 18 17 24 10 112 20 36 35 103 44 73 90 33 16 126 122 29 88 79 302 182 109 55 389 34 65 16 30 33 24 67 72 129 228 120 106 14 75 57 71 38 211 53 5 17 171 82 180 97 67 24 183 53 158 8 30 35 123 64 116...