#include <bits/stdc++.h>
using namespace std;
#define f first
#define s second
#define pb push_back
#define ar array
#define all(x) x.begin(), x.end()
#define siz(x) (int)x.size()
#define FOR(x, y, z) for(int x = (y); x < (z); x++)
#define ROF(x, z, y) for(int x = (y-1); x >= (z); x--)
#define F0R(x, z) FOR(x, 0, z)
#define R0F(x, z) ROF(x, 0, z)
#define trav(x, y) for(auto&x:y)
using ll = long long;
using vi = vector<int>;
using vl = vector<long long>;
using pii = pair<int, int>;
using vpii = vector<pair<int, int>>;
template<class T> inline bool ckmin(T&a, T b) {return b < a ? a = b, 1 : 0;}
template<class T> inline bool ckmax(T&a, T b) {return b > a ? a = b, 1 : 0;}
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
const char nl = '\n';
const int mxN = 2e5 + 10;
const int MOD = 1e9 + 7;
const long long infLL = 1e18;
int n, q;
vl a;
vl p;
vl t;
ll pos(int idx, ll time){
ll num = time / t[idx];
return num*p[idx]-idx;
}
int32_t main(){
ios_base::sync_with_stdio(0); cin.tie(0);
cin >> n >> q;
a=p=t=vl(n+1);
FOR(i, 1, 1+n){
cin >> a[i];
}
p[0] = 1;
t[0] = 1;
FOR(i, 1, 1+n){
// so we need to know how many days it will take to go dist
// clearly we just wait when the distance is a[i]+1 or more -> which means its just when they travel a[i]?
// so we need the number of periods
ll per = (p[i-1]+a[i]-1)/p[i-1];
p[i] = per*p[i-1];
t[i] = per*t[i-1];
}
while(q--){
ll t, l, r;
cin >> t >> l >> r;
int L = 0, R = n;
int mn=-MOD, mx=MOD;
while(L<=R){
int M = (L+R)/2;
//cout << M << ' ' << t << ' ' << pos(M, t) << nl;
if(pos(M, t) >= l){
mn = M;
L = M+1;
}
else{
R = M-1;
}
}
L = 0, R = n;
while(L<=R){
int M = (L+R)/2;
if(pos(M, t) <= r){
mx = M;
R = M-1;
}
else{
L = M+1;
}
}
//cout << mn << ' ' << mx << nl;
cout << max(0, mn-mx+1) << nl;
}
return 0;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
769 ms |
30572 KB |
Output is correct |
2 |
Correct |
742 ms |
30576 KB |
Output is correct |
3 |
Correct |
752 ms |
30700 KB |
Output is correct |
4 |
Correct |
736 ms |
30828 KB |
Output is correct |
5 |
Correct |
746 ms |
30700 KB |
Output is correct |
6 |
Correct |
728 ms |
30572 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
1 ms |
364 KB |
Output is correct |
2 |
Correct |
1 ms |
364 KB |
Output is correct |
3 |
Correct |
1 ms |
364 KB |
Output is correct |
4 |
Correct |
1 ms |
364 KB |
Output is correct |
5 |
Correct |
1 ms |
364 KB |
Output is correct |
6 |
Correct |
1 ms |
364 KB |
Output is correct |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Correct |
769 ms |
30572 KB |
Output is correct |
2 |
Correct |
742 ms |
30576 KB |
Output is correct |
3 |
Correct |
752 ms |
30700 KB |
Output is correct |
4 |
Correct |
736 ms |
30828 KB |
Output is correct |
5 |
Correct |
746 ms |
30700 KB |
Output is correct |
6 |
Correct |
728 ms |
30572 KB |
Output is correct |
7 |
Correct |
1 ms |
364 KB |
Output is correct |
8 |
Correct |
1 ms |
364 KB |
Output is correct |
9 |
Correct |
1 ms |
364 KB |
Output is correct |
10 |
Correct |
1 ms |
364 KB |
Output is correct |
11 |
Correct |
1 ms |
364 KB |
Output is correct |
12 |
Correct |
1 ms |
364 KB |
Output is correct |
13 |
Correct |
378 ms |
29024 KB |
Output is correct |
14 |
Correct |
393 ms |
29932 KB |
Output is correct |
15 |
Correct |
367 ms |
28424 KB |
Output is correct |
16 |
Correct |
378 ms |
28928 KB |
Output is correct |
17 |
Correct |
487 ms |
33388 KB |
Output is correct |
18 |
Correct |
497 ms |
33132 KB |
Output is correct |
19 |
Correct |
507 ms |
33280 KB |
Output is correct |
20 |
Correct |
486 ms |
33144 KB |
Output is correct |
21 |
Correct |
498 ms |
33388 KB |
Output is correct |
22 |
Correct |
525 ms |
33388 KB |
Output is correct |
23 |
Correct |
493 ms |
33176 KB |
Output is correct |
24 |
Correct |
490 ms |
33260 KB |
Output is correct |
25 |
Correct |
748 ms |
30700 KB |
Output is correct |
26 |
Correct |
714 ms |
30700 KB |
Output is correct |
27 |
Correct |
554 ms |
32780 KB |
Output is correct |
28 |
Correct |
512 ms |
33132 KB |
Output is correct |
29 |
Correct |
551 ms |
32904 KB |
Output is correct |
30 |
Correct |
544 ms |
32876 KB |
Output is correct |
31 |
Correct |
539 ms |
33032 KB |
Output is correct |
32 |
Correct |
526 ms |
29292 KB |
Output is correct |
33 |
Correct |
1 ms |
364 KB |
Output is correct |