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 ll long long
#define ar array
const int mxN=3e5;
int n, m, a[mxN];
ar<int, 3> b[mxN];
ll s, dp2[mxN];
struct ds1 {
ar<int, 2> st[2*mxN];
void init() {
for(int i=0; i<n; ++i)
st[i+n]={a[i], i};
for(int i=n-1; i; --i)
st[i]=max(st[2*i], st[2*i+1]);
}
ar<int, 2> qry(int l, int r) {
ar<int, 2> b{};
for(l+=n, r+=n+1; l<r; ++l/=2, r/=2) {
if(l&1)
b=max(st[l], b);
if(r&1)
b=max(st[r-1], b);
}
return b;
}
} ds1;
struct ds2 {
ar<int, 3> st[2*mxN];
void init() {
for(int i=0; i<m; ++i)
st[i+m]={b[i][1], b[i][0], b[i][2]};
for(int i=m-1; i; --i)
st[i]=min(st[2*i], st[2*i+1]);
}
ar<int, 3> qry(int l, int r) {
ar<int, 3> b{n+1};
for(l+=m, r+=m+1; l<r; ++l/=2, r/=2) {
if(l&1)
b=min(st[l], b);
if(r&1)
b=min(st[r-1], b);
}
return b;
}
void upd(int i, ar<int, 3> x) {
for(st[i+=m]=x; i/=2; )
st[i]=min(st[2*i], st[2*i+1]);
}
} ds2;
struct ds3 {
ll ft[mxN+1];
void upd(int i, ll x) {
for(++i; i<=n; i+=i&-i)
ft[i]+=x;
}
void upd(int l, int r, ll x) {
upd(l, x);
upd(r+1, -x);
}
ll qry(int i) {
ll r=0;
for(++i; i; i-=i&-i)
r+=ft[i];
return r;
}
} ds3;
int dfs(int l, int r, int mx) {
if(l>r)
return -1;
int m2=ds1.qry(l, r)[1];
int lc=dfs(l, m2-1, a[m2]), rc=dfs(m2+1, r, a[m2]);
dp2[m2]=(~lc?dp2[lc]:0)+(~rc?dp2[rc]:0);
int l2=lower_bound(b, b+m, ar<int, 3>{l})-b, r2=lower_bound(b, b+m, ar<int, 3>{r+1})-b-1;
while(1) {
ar<int, 3> d=ds2.qry(l2, r2);
if(d[0]>mx)
break;
if(d[1]<m2) {
dp2[m2]=max(d[2]+(~lc?ds3.qry(d[1]):0)+(~rc?dp2[rc]:0), dp2[m2]);
} else if(d[1]>m2) {
dp2[m2]=max(d[2]+(~lc?dp2[lc]:0)+(~rc?ds3.qry(d[1]):0), dp2[m2]);
} else {
dp2[m2]=max(d[2]+(~lc?dp2[lc]:0)+(~rc?dp2[rc]:0), dp2[m2]);
}
ds2.upd(lower_bound(b, b+m, ar<int, 3>{d[1], d[0], d[2]})-b, {n+1});
}
ds3.upd(l, m2, dp2[rc]);
ds3.upd(m2, r, dp2[lc]);
return m2;
}
int main() {
ios::sync_with_stdio(0);
cin.tie(0);
cin >> n;
for(int i=0; i<n; ++i)
cin >> a[i];
ds1.init();
cin >> m;
for(int i=0; i<m; ++i) {
cin >> b[i][0] >> b[i][1] >> b[i][2], --b[i][0];
s+=b[i][2];
}
sort(b, b+m);
ds2.init();
int rt=dfs(0, n-1, n);
cout << s-dp2[rt];
}
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