#include "bits/stdc++.h"
using namespace std;
using ll=long long;
using ull=unsigned long long;
#define speed ios_base::sync_with_stdio(false);cin.tie();cout.tie()
#define endl "\n"
#define int ll
#define ff first
#define ss second
#define pb push_back
const int sz = 2e5 + 9;
const int oo = 1e4 + 7;
const int N = 2e5 + 5;
int powmod(int x, int y){
if(!y) return 1;
int res = powmod(x, y / 2);
if(y % 2 == 1)
return res*res*x;
return res*res;
}
int gcd(int a, int b) {
if (b == 0)
return a;
return gcd(b, a % b);
}
vector<int>v(N);
void solve(){
int n,q;
cin>>n>>q;
for(int i=0;i<n;i++)
cin>>v[i];
while(q--)
{
vector<int>dp(n+1,0);
int l,r,w;
cin>>l>>r>>w;
l--,r--;
for(int i=l;i<=r;i++)
v[i]+=w;
for(int i=1;i<=n;i++)
{
int maks=v[i-1];
int mini=v[i-1];
for(int j=i;j>=1;j--)
{
maks=max(maks,v[j-1]);
mini=min(mini,v[j-1]);
dp[i]=max(dp[i],dp[j-1]+(maks-mini));
}
}
cout<<dp[n]<<endl;
}
}
signed main()
{
speed;
int tt=1;
//cin >> tt;
while(tt--)
{
solve();
}
return 0;
}
