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 <iostream>
#include <bits/stdc++.h>
using namespace std;
#define rep(i,a,b) for (int i = (a); i <= (b); i++)
#define repa(i,a,b) for (int i = (a); i >= (b); i--)
#define lli int
#define debug(a) cout << #a << " = " << a << endl
#define debugsl(a) cout << #a << " = " << a << ", "
#define MAX 200000
#define val first
#define id second
//puede ser que arruine la memoria
//checar
set<int> st[MAX*4];
int n,q,offset,izq,der,l,r,k,ini,fin,mitad,a;
set<int>::iterator x,y;
pair<lli,lli> mayores[MAX*4],act;
bool res;
pair<lli,lli> busca(lli pos, lli ini, lli fin ,lli l, lli r) {
if (ini > r || fin < l) return {0,0};
if (l <= ini && fin <= r) return mayores[pos];
lli mitad=(ini+fin)/2;
pair<int,int> a = busca(pos*2, ini,mitad,l,r);
pair<int,int> b = busca((pos*2)+1, mitad+1,fin,l,r);
return (a.val > b.val)? a : b;
}
int query(lli pos, lli ini, lli fin, lli l, lli r, lli lim) {
if (l > r) return -1;
if (ini > r || fin < l) return -1;
if (l <= ini && fin <= r) {
x = st[pos].lower_bound(lim);
if (x == st[pos].begin()) return -1;
x--;
return (*x);
}
lli mitad = (ini+fin)/2;
lli a = query(pos*2,ini,mitad,l,r,lim);
lli b = query((pos*2)+1,mitad+1,fin,l,r,lim);
return max(a,b);
}
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
cin >> n >> q;
offset = 1;
while (offset < n) offset<<=1;
rep(i,0,n-1) {
cin >> a;
st[offset+i].emplace_hint(st[i+offset].end(), a);
mayores[offset+i] = {a,i};
}
repa(i,offset-1,1) {
//mezclar
izq = i*2;
x = st[izq].begin();
der = (i*2)+1;
y = st[der].begin();
while (y != st[der].end() || x != st[izq].end()) {
if (y == st[der].end()) {
st[i].emplace_hint(st[i].end(), *x);
x++;
continue;
}
if (x == st[izq].end()) {
st[i].emplace_hint(st[i].end(), (*y));
y++;
continue;
}
if ((*x) == (*y)) {
st[i].emplace_hint(st[i].end(), *y);
y++;
x++;
continue;
}
if ((*x) < (*y)) {
st[i].emplace_hint(st[i].end(), *x);
x++;
continue;
}
else {
st[i].emplace_hint(st[i].end(), *y);
y++;
continue;
}
}
if (mayores[izq].val <= mayores[der].val) mayores[i] = mayores[izq];
else mayores[i] = mayores[der];
}
rep(Q,1,q) {
cin >> l >> r >> k;
res =true;
ini = l;
fin = r;
while (ini <= fin) {
mitad = (ini+fin)/2;
act = busca(1,1,offset,l,mitad);
a = query(1,1,offset,act.id+1,r,act.val);
if (a == -1) fin = mitad - 1;
ini = mitad + 1;
if (act.val + a > k) {
res = false;
break;
}
}
if (res) cout << 1 << "\n";
else cout << "0\n";
}
}
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