//#pragma GCC optimize("Ofast,unroll-loops,fast-math,O3")
//#pragma GCC target( "sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#define ordered_set tree<ll,null_type,less<ll>,rb_tree_tag,tree_order_statistics_node_update>
#define len(x) (int)x.size()
#define ull unsigned long long
#define F first
#define S second
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define int long long
#define ld long double
#define pii pair<int,int>
#define mii map<int,int>
using namespace std;
using namespace __gnu_pbds;
using ll = long long;
const int N = 1e6 + 5;
const int MOD = 1e9 + 7;
const ll INF = 1e18;
const ll inf = 1e9;
int n,q,a[N],t1[N*4],t2[N*4],c[N],lg[N],sp[25][N];
void build(int v = 1,int tl = 1,int tr = n){
if (tl==tr){
t1[v] = a[tl];
t2[v] = a[tl];
return;
}
int tm = (tl + tr) / 2;
build(v + v,tl,tm);
build(v + v + 1,tm + 1,tr);
t1[v] = min(t1[v + v], t1[v + v + 1]);
t2[v] = min(t2[v + v], t2[v + v + 1]);
}
int getmn(int l,int r,int v = 1,int tl = 1,int tr = n){
if (tl > r || tr < l){
return inf;
}
if (tl>=l && tr<=r){
return t1[v];
}
int tm = (tl + tr) / 2;
return min(getmn(l,r,v + v,tl,tm), getmn(l,r,v + v + 1,tm + 1,tr));
}
int getmx(int l,int r,int v = 1,int tl = 1,int tr = n){
if (tl > r || tr < l){
return 0;
}
if (tl>=l && tr<=r){
return t2[v];
}
int tm = (tl + tr) / 2;
return max(getmx(l,r,v + v,tl,tm), getmx(l,r,v + v + 1,tm + 1,tr));
}
signed main(){
// freopen("txt.in", "r", stdin);
// freopen("txt.out", "w", stdout);
ios_base::sync_with_stdio(0);
cin.tie(0);
lg[2] = 1;
for (int i=2;i<=n;i++){
if (!lg[i]) lg[i] = lg[i-1];
if (i*2<=n) lg[i*2] = lg[i] + 1;
}
cin >> n >> q;
for (int i=1;i<=n;i++){
cin >> a[i];
}
for (int i=2;i<=n;i++){
if (a[i-1]<=a[i]) {
c[i-1] = 1;
sp[0][i-1] = c[i-1];
}
}
for (int i=1;i<=20;i++){
for (int j=1;j+(1<<i)-1<=n;j++){
sp[i][j] = min(sp[i-1][j], sp[i-1][j+(1<<(i-1))]);
}
}
build();
while(q--){
int ll,rr,k;
cin >> ll >> rr >> k;
if (ll==rr){
cout << 1 << '\n';
continue;
}
int l = ll;
int r = rr-1;
while(l<=r){
int md = (l + r) / 2;
int x = lg[(rr-1)-md+1];
int cur = min(sp[x][md], sp[x][(rr-1)-(1<<x)+1]);
if (cur==1){
r = md - 1;
}
else{
l = md + 1;
}
}
if (ll<l){
pii res1 = {getmn(ll, l - 1), getmx(ll, l - 1)};
pii res2 = {getmn(ll, rr), getmx(ll, rr)};
if (min(res1.F+res1.S, res2.F+res2.S) <= k){
cout << 1 << '\n';
}
else{
cout << 0 << '\n';
}
}
else{
cout << 1 << '\n';
}
}
}
//order_of_key(k): Number of items strictly smaller than k .
//find_by_order(k): K-th element in a set (counting from zero).
//sum of squares n*(n+1)*(2n+1)/6
//sum of cubes [n*(n+1)/2]^2
//sum of squares for odds n*(4*n*n-1)/3
//sum of cubes for odds n*n*(2*n*n-1)
//a/b%mod = a*(b^(m-2)%mod)
//(a>>x)&1 == 0
//a^b = (a+b)-2(a&b)
//srand(time(0))-always changing
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
14680 KB |
Output is correct |
| 2 |
Correct |
1 ms |
8540 KB |
Output is correct |
| 3 |
Incorrect |
3 ms |
24924 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
14680 KB |
Output is correct |
| 2 |
Correct |
1 ms |
8540 KB |
Output is correct |
| 3 |
Incorrect |
3 ms |
24924 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
3029 ms |
210220 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
163 ms |
62288 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
14680 KB |
Output is correct |
| 2 |
Correct |
1 ms |
8540 KB |
Output is correct |
| 3 |
Incorrect |
3 ms |
24924 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
2 ms |
14680 KB |
Output is correct |
| 2 |
Correct |
1 ms |
8540 KB |
Output is correct |
| 3 |
Incorrect |
3 ms |
24924 KB |
Output isn't correct |
| 4 |
Halted |
0 ms |
0 KB |
- |
