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ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#178296 | #7248. Ivan Dorn | PhantomThreshold# | WA | 5ms | 17408kb | C++20 | 1.6kb | 2023-09-13 20:48:10 | 2023-09-13 20:48:11 |
Judging History
answer
#include <bits/stdc++.h>
#define ll long long
#define int long long
using namespace std;
const int maxn = 510000;
const int inf = 1e9+5;
inline void up(int &a,const int &b){ if(a<b) a=b; }
int n,m;
int a[maxn];
vector< pair<int,int> >V[maxn];
struct segment
{
int seg[maxn<<2];
int loc,c;
void upd(const int x,const int l,const int r)
{
if(l==r)
{
up(seg[x],c);
return;
}
int mid=(l+r)>>1,lc=x<<1,rc=lc|1;
if(loc<=mid) upd(lc,l,mid);
else upd(rc,mid+1,r);
seg[x]=max(seg[lc],seg[rc]);
}
int lx,rx;
int query(const int x,const int l,const int r)
{
if(rx<l||r<lx) return 0;
if(lx<=l&&r<=rx) return seg[x];
int mid=(l+r)>>1,lc=x<<1,rc=lc|1;
return max(query(lc,l,mid),query(rc,mid+1,r));
}
}seg;
int ans[maxn];
int t[maxn],tp;
signed main()
{
ios_base::sync_with_stdio(false); ////////////////////////////////////////
cin.tie(0);
cin>>n>>m;
for(int i=1;i<=n;i++) cin>>a[i];
for(int i=1;i<=m;i++)
{
int l,r; cin>>l>>r;
V[r].emplace_back(l,i);
}
t[tp=1]=0; a[0]=inf;
for(int r=1;r<=n;r++)
{
while(a[t[tp]]<a[r])
{
int j=tp-1;
while(j>=1 && a[t[tp]]==a[t[j]])
{
seg.loc=t[j];
seg.c=t[tp]-t[j];
seg.upd(1,1,n);
j--;
}
tp=j;
}
for(auto [ql,i]:V[r])
{
if(a[t[tp]]==a[r] && ql<=t[tp])
{
int x=1,y=tp;
while(x<=y)
{
int mid=(x+y)>>1;
if(t[mid]<ql || a[t[mid]]>a[r]) x=mid+1;
else y=mid-1;
} y++;
up(ans[i],r-t[y]);
}
seg.lx=ql,seg.rx=r;
up(ans[i],seg.query(1,1,n));
}
t[++tp]=r;
}
for(int i=1;i<=m;i++) cout<<ans[i]<<'\n';
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 0ms
memory: 16680kb
input:
8 5 4 3 2 2 3 3 7 3 1 7 6 8 1 3 3 6 1 8
output:
4 0 0 1 4
result:
ok 5 number(s): "4 0 0 1 4"
Test #2:
score: 0
Accepted
time: 5ms
memory: 17052kb
input:
1 1 1 1 1
output:
0
result:
ok 1 number(s): "0"
Test #3:
score: 0
Accepted
time: 0ms
memory: 16628kb
input:
2 1 1 2 1 2
output:
0
result:
ok 1 number(s): "0"
Test #4:
score: 0
Accepted
time: 0ms
memory: 17408kb
input:
2 1 1 1 1 2
output:
1
result:
ok 1 number(s): "1"
Test #5:
score: -100
Wrong Answer
time: 0ms
memory: 17308kb
input:
10 10 6 4 10 10 10 3 4 5 4 3 4 10 3 8 3 5 1 10 2 3 4 6 1 2 2 6 9 10 5 7
output:
0 0 2 0 0 0 0 0 0 0
result:
wrong answer 1st numbers differ - expected: '1', found: '0'