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QOJ
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 |
---|---|---|---|---|---|---|---|---|---|
#267206 | #7685. Barkley II | sofija6 | WA | 67ms | 5456kb | C++14 | 2.0kb | 2023-11-27 02:03:21 | 2023-11-27 02:03:21 |
Judging History
answer
#include <bits/stdc++.h>
#define ll long long
#define MAXN 500010
using namespace std;
ll n,m,sz,last[MAXN],a[MAXN];
struct seg_tree
{
vector<ll> st;
void Init()
{
sz=1;
while (sz<n)
sz <<= 1;
st.resize(2*sz+2);
fill(st.begin(),st.end(),0ll);
}
void Add(ll pos,ll val,ll x,ll lx,ll rx)
{
if (lx==rx)
{
st[x]=val;
return;
}
ll mid=(lx+rx)/2;
if (pos<=mid)
Add(pos,val,2*x,lx,mid);
else
Add(pos,val,2*x+1,mid+1,rx);
st[x]=st[2*x]+st[2*x+1];
}
ll Calc(ll l,ll r,ll x,ll lx,ll rx)
{
if (lx>r || rx<l)
return 0;
if (lx>=l && rx<=r)
return st[x];
ll mid=(lx+rx)/2;
return Calc(l,r,2*x,lx,mid)+Calc(l,r,2*x+1,mid+1,rx);
}
};
seg_tree S;
int main()
{
ios::sync_with_stdio(false); cin.tie(0); cout.tie(0);
ll t;
cin >> t;
while (t--)
{
cin >> n >> m;
S.Init();
for (ll i=1;i<=n;i++)
cin >> a[i];
set<ll> s;
ll ans=LLONG_MIN;
for (ll i=1;i<=n;i++)
{
if (!s.count(a[i]))
{
if (i>1)
ans=max(ans,S.Calc(1,i-1,1,1,sz)-a[i]);
s.insert(a[i]);
last[a[i]]=i;
S.Add(i,1,1,1,sz);
continue;
}
if (last[a[i]]+1<i)
ans=max(ans,S.Calc(last[a[i]]+1,i-1,1,1,sz)-a[i]);
S.Add(last[a[i]],0,1,1,sz);
last[a[i]]=i;
S.Add(i,1,1,1,sz);
}
for (auto i : s)
{
if (last[i]!=n)
ans=max(ans,S.Calc(last[i]+1,n,1,1,sz)-i);
}
ll cur=1;
while (cur<=m && s.count(cur))
cur++;
if (cur<=m)
ans=max(ans,(ll)s.size()-m);
cout << ans << "\n";
}
return 0;
}
详细
Test #1:
score: 100
Accepted
time: 0ms
memory: 5456kb
input:
2 5 4 1 2 2 3 4 5 10000 5 2 3 4 1
output:
2 3
result:
ok 2 number(s): "2 3"
Test #2:
score: -100
Wrong Answer
time: 67ms
memory: 5440kb
input:
50000 10 19 12 6 1 12 11 15 4 1 13 18 10 8 8 7 6 7 6 2 2 3 4 8 10 6 3 2 6 6 5 2 3 4 5 6 10 11 6 3 7 9 2 1 2 10 10 4 10 6 6 1 2 6 1 1 3 4 2 1 10 9 8 5 3 9 1 7 5 5 1 1 10 5 1 4 3 2 5 4 5 3 5 2 10 14 3 8 12 10 4 2 3 13 7 3 10 14 5 5 12 2 8 1 13 9 8 5 10 7 5 5 6 6 1 5 3 7 3 4 10 7 5 1 4 6 1 6 4 3 7 5 10...
output:
3 1 2 4 2 3 3 3 3 3 4 5 2 3 -1 3 1 3 7 6 3 3 -1 2 4 4 6 2 3 0 6 1 2 2 2 5 3 3 3 3 2 5 2 1 3 3 2 3 1 4 2 2 4 4 2 2 5 3 2 1 4 3 3 3 2 3 0 4 7 6 2 2 4 3 3 4 -2 6 3 3 3 3 4 0 1 1 4 5 4 5 3 1 1 2 1 3 3 4 4 3 4 2 1 3 4 4 3 -1 3 4 3 5 4 4 2 4 6 4 4 5 3 4 5 1 4 3 3 3 3 -2 3 2 1 2 5 1 2 1 4 4 2 2 4 5 4 3 -4 ...
result:
wrong answer 1st numbers differ - expected: '6', found: '3'