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;
typedef long long ll;
const int N=2e5+5;
const int K=1<<19;
const ll inf=1e18;
int n,q;
ll a[N],d[N];
struct mat:array<array<ll,2>,2>{
mat(ll x=0){
for(int i=0;i<2;i++)for(int j=0;j<2;j++)(*this)[i][j]=x;
}
mat(ll a,ll b){
(*this)[0][0]=a;
(*this)[0][1]=0;
(*this)[1][0]=b;
(*this)[1][1]=-inf;
}
friend mat operator*(mat a,mat b){
mat c(-inf);
for(int i=0;i<2;i++){
for(int j=0;j<2;j++){
for(int k=0;k<2;k++){
c[i][j]=max(c[i][j],a[i][k]+b[k][j]);
}
}
}
return c;
}
};
struct segtree{
mat t[K];
void build(int l,int r,int i){
if(l==r)return void(t[i]=mat((d[l]^d[l-1])<0?0:abs(d[l]),abs(d[l])));
int m=(l+r)/2;
build(l,m,i*2);
build(m+1,r,i*2+1);
t[i]=t[i*2]*t[i*2+1];
}
void build(){
build(2,n,1);
}
void update(int l,int r,int i,int x){
if(x<l||r<x)return;
if(l==r)return void(t[i]=mat((d[l]^d[l-1])<0?0:abs(d[l]),abs(d[l])));
int m=(l+r)/2;
update(l,m,i*2,x);
update(m+1,r,i*2+1,x);
t[i]=t[i*2]*t[i*2+1];
}
void update(int x){
update(2,n,1,x);
}
}s;
int main(){
cin.tie(nullptr)->sync_with_stdio(false);
cin >> n >> q;
for(int i=1;i<=n;i++)cin >> a[i];
for(int i=1;i<=n;i++)d[i]=a[i]-a[i-1];
s.build();
while(q--){
int l,r,x;
cin >> l >> r >> x;
d[l]+=x;
d[r+1]-=x;
s.update(l);
s.update(l+1);
s.update(r+1);
s.update(r+2);
cout << max(s.t[1][0][0],s.t[1][1][0]) << "\n";
}
}
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