oj.uz

Submission #70894

# Submission time Handle Problem Language Result Execution time Memory
70894 2018-08-23T16:01:54 Z AlphaRazra Worst Reporter 3 (JOI18_worst_reporter3) C++14
100 / 100
 1415 ms 196168 KB 
#include<bits/stdc++.h>
#define mp make_pair
#define fs first
#define sc second
#define pb push_back
#define debug(x) cout<<#x<<" = "<<(x)<<endl
#define mod 998244353
#define INF 1e18
using namespace std;

/* Look for:
* the exact constraints (multiple sets are too slow for n=10^6 :( ) 
* special cases (n=1?)
* overflow (ll vs int?)
* array bounds
* if you have no idea just guess the appropriate well-known algo instead of doing nothing :/
*/

int n,q;
long long a[500005];
long long mov[500005];
long long t,l,r;

bool cek(long long dist,int idx){
	long long nyak = t / mov[idx];
	nyak = nyak * mov[idx];

	nyak = nyak - idx;
	if(nyak <= dist){
		return true;
	}
	return false;
}

int main(){
	ios::sync_with_stdio(0); cin.tie(0);
	cin >> n >> q;

	mov[0] = 1;
	for(int i = 1; i <= n; i++){
		cin >> a[i];
		long long nyak = a[i] / mov[i - 1];
		if(a[i] % mov[i - 1] != 0){
			nyak++;
		}
		mov[i] = mov[i - 1] * nyak;
	//	cout << i << " " << mov[i] << " here\n";
	}

	for(int i = 1; i <= q; i++){
		cin >> t >> l >> r;
		int kiri,kanan,ansL,ansR;

		l--;
		kiri = 1, kanan = n;
		ansL = n + 1;
		while(kiri <= kanan){
			int mid = (kiri + kanan) / 2;

			if(cek(l,mid)){
				ansL = mid;
				kanan = mid - 1;
			}else{
				kiri = mid + 1;
			}
		}
		kiri = 1; kanan = n;
		ansR = n + 1;
		while(kiri <= kanan){
			int mid = (kiri + kanan) / 2;

			if(cek(r,mid)){
				ansR = mid;
				kanan = mid - 1;
			}else{
				kiri = mid + 1;
			}
		}
		int tamb = 0;
		if(t > l && t <= r) tamb = 1;
		cout << ansL - ansR + tamb << "\n";
	}
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1107 ms 19580 KB Output is correct
2 Correct 1230 ms 27324 KB Output is correct
3 Correct 1174 ms 27324 KB Output is correct
4 Correct 1415 ms 27424 KB Output is correct
5 Correct 1222 ms 27424 KB Output is correct
6 Correct 1055 ms 27424 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 27424 KB Output is correct
2 Correct 5 ms 27424 KB Output is correct
3 Correct 3 ms 27424 KB Output is correct
4 Correct 4 ms 27424 KB Output is correct
5 Correct 3 ms 27424 KB Output is correct
6 Correct 3 ms 27424 KB Output is correct

Subtask #3
81.0 / 81.0

# Verdict Execution time Memory Grader output
1 Correct 1107 ms 19580 KB Output is correct
2 Correct 1230 ms 27324 KB Output is correct
3 Correct 1174 ms 27324 KB Output is correct
4 Correct 1415 ms 27424 KB Output is correct
5 Correct 1222 ms 27424 KB Output is correct
6 Correct 1055 ms 27424 KB Output is correct
7 Correct 4 ms 27424 KB Output is correct
8 Correct 5 ms 27424 KB Output is correct
9 Correct 3 ms 27424 KB Output is correct
10 Correct 4 ms 27424 KB Output is correct
11 Correct 3 ms 27424 KB Output is correct
12 Correct 3 ms 27424 KB Output is correct
13 Correct 584 ms 27424 KB Output is correct
14 Correct 667 ms 27424 KB Output is correct
15 Correct 671 ms 27424 KB Output is correct
16 Correct 606 ms 27424 KB Output is correct
17 Correct 805 ms 27424 KB Output is correct
18 Correct 758 ms 27424 KB Output is correct
19 Correct 786 ms 27424 KB Output is correct
20 Correct 838 ms 27424 KB Output is correct
21 Correct 784 ms 27424 KB Output is correct
22 Correct 729 ms 27424 KB Output is correct
23 Correct 945 ms 45508 KB Output is correct
24 Correct 844 ms 64216 KB Output is correct
25 Correct 1161 ms 80268 KB Output is correct
26 Correct 1033 ms 95624 KB Output is correct
27 Correct 1028 ms 113244 KB Output is correct
28 Correct 877 ms 131148 KB Output is correct
29 Correct 926 ms 147856 KB Output is correct
30 Correct 1043 ms 165360 KB Output is correct
31 Correct 944 ms 182480 KB Output is correct
32 Correct 859 ms 196168 KB Output is correct
33 Correct 3 ms 196168 KB Output is correct