#include<bits/stdc++.h>
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(),x.end()
using namespace std;
const int mxn=3e5+5;
ll t[4*mxn]{0},lz[4*mxn]{0};
void push(int i,int l,int r){
if(lz[i]==1e16)return;
t[i]=lz[i]*(r-l+1);
if(l<r)lz[2*i]=lz[i],lz[2*i+1]=lz[i];
lz[i]=1e16;
}
void update(int i,int l,int r,int tl,int tr,ll v){
push(i,l,r);
if(r<tl||l>tr)return;
if(r<=tr&&l>=tl){
lz[i]=v;push(i,l,r);return;
}int m=(l+r)>>1;
update(2*i,l,m,tl,tr,v);update(2*i+1,m+1,r,tl,tr,v);
t[i]=t[2*i]+t[2*i+1];
}
ll query(int i,int l,int r,int tl,int tr){
push(i,l,r);
if(r<tl||l>tr)return 0;
if(r<=tr&&l>=tl)return t[i];
int m=(l+r)>>1;
return query(2*i,l,m,tl,tr)+query(2*i+1,m+1,r,tl,tr);
}
int main(){
ios_base::sync_with_stdio(0);cin.tie(0);
int n;ll d;cin>>n>>d;ll c[n+1],a[n+1],b[n+1],qa[n+1];
for(int i=1;i<=4*n;i++)lz[i]=1e16;
for(int i=1;i<=n;i++){
cin>>c[i];b[i]=c[i]%d,a[i]=c[i]/d;
}ll pf[n+1]={0},spf[n+1]={0};
for(int i=2;i<=n;i++)pf[i]=pf[i-1]+(b[i]<b[i-1]);
for(int i=1;i<=n;i++)spf[i]=spf[i-1]+pf[i],qa[i]=qa[i-1]+a[i];
vector<pii>qr[n+1];int q;cin>>q;ll ans[q+1]={0};
for(int i=1;i<=q;i++){
int l,r;cin>>l>>r;qr[r].pb({l,i});
}vector<pii>g;
for(int i=1;i<=n;i++){
int id=i;
while(!g.empty()&&a[i]-pf[i]<g.back().f)id=g.back().s,g.pop_back();
g.pb({a[i]-pf[i],id});update(1,1,n,id,i,a[i]-pf[i]);
for(auto it : qr[i]){
ans[it.s]=qa[i]-qa[it.f-1];
ans[it.s]-=query(1,1,n,it.f,i);
ans[it.s]-=spf[i]-spf[it.f-1];
if(query(1,1,n,it.f,it.f)<0)ans[it.s]=-1;
}
}
for(int i=1;i<=q;i++)cout<<ans[i]<<'\n';
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Incorrect |
0 ms |
2396 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
382 ms |
55988 KB |
Output is correct |
2 |
Correct |
389 ms |
55984 KB |
Output is correct |
3 |
Incorrect |
157 ms |
12624 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
142 ms |
12352 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
387 ms |
46912 KB |
Output is correct |
2 |
Correct |
367 ms |
55248 KB |
Output is correct |
3 |
Incorrect |
231 ms |
23728 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
2392 KB |
Output is correct |
2 |
Correct |
1 ms |
2396 KB |
Output is correct |
3 |
Incorrect |
0 ms |
2396 KB |
Output isn't correct |
4 |
Halted |
0 ms |
0 KB |
- |