This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <bits/stdc++.h>
using namespace std;
#define F first
#define S second
#define FOR(i,a,b) for (auto i = (a); i <= (b); ++i)
#define NFOR(i,a,b) for(auto i = (a); i >= (b); --i)
#define all(x) (x).begin(), (x).end()
#define sz(x) int(x.size())
#define mp(i,a) make_pair(i,a)
#define pb(a) push_back(a)
#define bit(x,b) (x&(1LL<<b))
typedef long long int lli;
typedef pair <lli,lli> ii;
typedef pair <lli,ii> iii;
typedef vector <lli> vi;
pair<ii,ii> segt[8*100000];
lli lazy[8*100000];
void up(lli node,lli l,lli r,lli s,lli e,lli val)
{
if(lazy[node]!=0)
{
segt[node].F.F+=lazy[node];
segt[node].F.S+=lazy[node];
if(l!=r)
{
lazy[2*node+1]+=lazy[node];
lazy[2*node+2]+=lazy[node];
}
lazy[node]=0;
}
if(l>e||r<s)
return;
if(l>=s&&r<=e)
{
segt[node].F.F+=val;
segt[node].F.S+=val;
if(l!=r)
{
lazy[2*node+1]+=val;
lazy[2*node+2]+=val;
}
return;
}
lli m=(l+r)/2;
up(2*node+1,l,m,s,e,val);
up(2*node+2,m+1,r,s,e,val);
segt[node].F.F=segt[2*node+1].F.F;
segt[node].F.S=segt[2*node+2].F.S;
segt[node].S.F=segt[2*node+1].S.F+segt[2*node+2].S.F;
segt[node].S.S=segt[2*node+1].S.S+segt[2*node+2].S.S;
if(segt[2*node+1].F.S<=segt[2*node+2].F.F)
segt[node].S.F+=segt[2*node+2].F.F-segt[2*node+1].F.S;
else
segt[node].S.S+=segt[2*node+1].F.S-segt[2*node+2].F.F;
}
ii qu(lli node,lli l,lli r,lli s,lli e)
{
if(l>e||r<s)
return(mp(0*1LL,0*1LL));
if(lazy[node]!=0)
{
segt[node].F.F+=lazy[node];
segt[node].F.S+=lazy[node];
if(l!=r)
{
lazy[2*node+1]+=lazy[node];
lazy[2*node+2]+=lazy[node];
}
lazy[node]=0;
}
if(l>=s&&r<=e)
return(segt[node].S);
lli m=(l+r)/2;
ii q1=qu(2*node+1,l,m,s,e),q2=qu(2*node+2,m+1,r,s,e);
return(mp(q1.F+q2.F,q2.S+q1.S));
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
lli test=1;
for(;test>0;--test)
{
lli n,q,s,t,fi,se,th;
cin>>n>>q>>s>>t;
n++;
for(lli i=0;i<n;++i)
{
cin>>fi;
up(0,0,n-1,i,i,fi);
}
for(lli i=0;i<q;++i)
{
cin>>fi>>se>>th;
up(0,0,n-1,fi,se,th);
ii ans=qu(0,0,n-1,0,n-1);
cout<<-ans.F*s+ans.S*t<<endl;
}
}
return(0);
}
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