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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 |
---|---|---|---|---|---|---|---|---|---|
#432898 | #8718. 保区间最小值一次回归问题 | Fesdrer | TL | 1ms | 7708kb | C++17 | 2.2kb | 2024-06-07 20:08:58 | 2024-06-07 20:08:58 |
Judging History
answer
#include<bits/stdc++.h>
using namespace std;
const int N=5e5+5;
int T,n,m,a[N];
long long ans,f[N];
struct Node{int l,r,v;}que[N];
vector<pair<int,int>> query;
vector<int> id,liveid;
deque<int> q;
void solve(int v){
while(q.size()) q.pop_back();
f[0]=0;
q.push_back(0);
query.insert(query.begin(),{0,0});
for(int i:id) ans+=max(0,v-a[i]);
id.insert(id.begin(),0);
long long mn=0x3f3f3f3f3f3f3f3f;
for(int i=1,j=0;i<=int(id.size())-1;i++){
while(j<int(query.size())-1&&query[j+1].second<i) j++;
while(q.size()&&q.front()<query[j].first) q.pop_front();
f[i]=f[q.front()]+max(v,a[id[i]])-v;
while(q.size()&&f[q.back()]<=f[i]) q.pop_back();
q.push_back(i);
if(i>=query.back().first&&i<=query.back().second) mn=min(mn,f[i]);
}
ans+=mn;
}
int main(){
ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
cin>>T;
while(T--){
cin>>n>>m;
for(int i=1;i<=n;i++) cin>>a[i];
for(int i=1;i<=m;i++) cin>>que[i].l>>que[i].r>>que[i].v;
liveid.clear();
for(int i=1;i<=n+1;i++) liveid.push_back(i);
sort(que+1,que+m+1,[&](const Node &x,const Node &y){return x.v>y.v;});
bool flagg=1;
ans=0;
for(int i=1;i<=m;i++){
int l=i,r=i-1;
query.clear(),id.clear();
while(r<n&&que[l].v==que[r+1].v) r++,query.push_back({que[r].l,que[r].r});
i=r;
sort(query.begin(),query.end(),[&](const pair<int,int> &x,const pair<int,int> &y){
return (x.second==y.second?x.first>y.first:x.second<y.second);
});
for(int i=0;i<int(query.size());i++)
if(i&&query[i].first<=query[i-1].first) query.erase(query.begin()+i),i--;
bool flag=1;
for(pair<int,int> it:query)
if(*lower_bound(liveid.begin(),liveid.end(),it.first)>it.second) flag=0;
if(!flag){flagg=0;break;}
for(pair<int,int> it:query){
vector<int>::iterator nowl=lower_bound(liveid.begin(),liveid.end(),it.first),nowr;
for(nowr=nowl;(*nowr)<=it.second;nowr++) id.push_back(*nowr);
liveid.erase(nowl,nowr);
}
for(pair<int,int> &it:query){
it.first=lower_bound(id.begin(),id.end(),it.first)-id.begin()+1;
it.second=upper_bound(id.begin(),id.end(),it.second)-id.begin();
}
solve(que[i].v);
}
if(flagg) cout<<ans<<endl;
else cout<<-1<<endl;
}
return 0;
}
詳細信息
Test #1:
score: 100
Accepted
time: 1ms
memory: 7708kb
input:
1 3 2 2023 40 41 1 1 2022 2 3 39
output:
2
result:
ok 1 number(s): "2"
Test #2:
score: -100
Time Limit Exceeded
input:
1000 100 100 1 35141686 84105222 84105220 7273527 178494861 178494861 112519027 77833654 77833656 261586535 278472336 278472336 261586536 416361017 416361017 426649080 323519513 278472337 420127821 420127823 420127823 482516531 434108818 420127821 631535744 615930922 546346921 546346920 546346920 70...
output:
574034911 467878458 53 1286167178 297741204 64 280347887 177712196 784026480 296728567 286923235 4988483639 14206888374 59 48 11175679 590350884 501237911 70 855019272 199949831 4700818306 49 180116732 1346919761 493114841 508696566 43 438210723 48 698387333 368822226 2114378718 601467502 1573521917...