oj.uz

Submission #429564

# Submission time Handle Problem Language Result Execution time Memory
429564 2021-06-16T06:48:20 Z Kevin_Zhang_TW Worst Reporter 3 (JOI18_worst_reporter3) C++17
100 / 100
 437 ms 11204 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
#define pb emplace_back
#define AI(i) begin(i), end(i)
template<class T> bool chmin(T &a, T b) { return b < a && (a = b, true); }
template<class T> bool chmax(T &a, T b) { return a < b && (a = b, true); }
#ifdef KEV
#define DE(args...) kout("[ " + string(#args) + " ] = ", args)
void kout() { cerr << endl; }
template<class T, class ...U> void kout(T a, U ...b) { cerr << a << ' ', kout(b...); }
template<class T> void debug(T l, T r) { while (l != r) cerr << *l << " \n"[next(l)==r], ++l; }
#else
#define DE(...) 0
#define debug(...) 0
#endif
// My bug list :
// integer overflow
// 0based, 1based forgotten
// index out of bound
// n, m, i, j typo
// some cases are missing

const int MAX_N = 500010;

int n, q;

// per[i] means how many step last one move, then I move
int D[MAX_N], v[MAX_N], per[MAX_N], len[MAX_N];

void init() {
	v[0] = 1;
	for (int i = 1;i <= n;++i) {
		//per[i] = cdiv(D[i] - 1, v[i-1]);
		per[i] = (D[i]-1) / v[i-1] + 1;
		v[i] = per[i] * v[i-1];
	}
	for (int i = n;i >= 0;--i) {
		len[i] = 1;
		if (per[i+1] == 1) {
			len[i] = len[i+1] + 1;
		}
	}
	per[n+1] = 1;
}

int inter(int l1, int r1, int l2, int r2) {
	chmax(l1, l2);
	chmin(r1, r2);
	return max(0, r1 - l1 + 1);
}
int qry(int t, int l, int r) {
	int res = 0;
	for (int i = 0;i <= n;) {
		int at = -i + t * v[i];
		res += inter(at - len[i] + 1, at, l, r);

		i += len[i];
		if (i > n) break;
		t /= per[i];
//		if (at <= r && at >= l) ++res;
//		t /= per[i+1];
	}
	return res;
}

int32_t main() {
	ios_base::sync_with_stdio(0), cin.tie(0);
	cin >> n >> q;
	for (int i = 1;i <= n;++i)
		cin >> D[i];

	init();

	while (q--) {
		int t, l, r;
		cin >> t >> l >> r;
		cout << qry(t, l, r) << '\n';
	}
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 294 ms 11200 KB Output is correct
2 Correct 289 ms 11088 KB Output is correct
3 Correct 289 ms 11036 KB Output is correct
4 Correct 290 ms 11204 KB Output is correct
5 Correct 286 ms 11132 KB Output is correct
6 Correct 296 ms 11140 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 2 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 1 ms 332 KB Output is correct

Subtask #3
81.0 / 81.0

# Verdict Execution time Memory Grader output
1 Correct 294 ms 11200 KB Output is correct
2 Correct 289 ms 11088 KB Output is correct
3 Correct 289 ms 11036 KB Output is correct
4 Correct 290 ms 11204 KB Output is correct
5 Correct 286 ms 11132 KB Output is correct
6 Correct 296 ms 11140 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 1 ms 332 KB Output is correct
10 Correct 1 ms 332 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 1 ms 332 KB Output is correct
13 Correct 354 ms 9064 KB Output is correct
14 Correct 304 ms 9136 KB Output is correct
15 Correct 330 ms 9076 KB Output is correct
16 Correct 306 ms 9012 KB Output is correct
17 Correct 410 ms 10524 KB Output is correct
18 Correct 413 ms 10500 KB Output is correct
19 Correct 377 ms 10380 KB Output is correct
20 Correct 410 ms 10452 KB Output is correct
21 Correct 380 ms 10656 KB Output is correct
22 Correct 366 ms 10432 KB Output is correct
23 Correct 367 ms 10520 KB Output is correct
24 Correct 365 ms 10476 KB Output is correct
25 Correct 301 ms 11108 KB Output is correct
26 Correct 293 ms 11188 KB Output is correct
27 Correct 437 ms 11004 KB Output is correct
28 Correct 418 ms 10796 KB Output is correct
29 Correct 396 ms 10868 KB Output is correct
30 Correct 392 ms 10976 KB Output is correct
31 Correct 405 ms 10884 KB Output is correct
32 Correct 282 ms 10620 KB Output is correct
33 Correct 1 ms 332 KB Output is correct