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Submission #799875

# Submission time Handle Problem Language Result Execution time Memory
799875 2023-08-01T07:25:53 Z phoenix Worst Reporter 3 (JOI18_worst_reporter3) C++17
100 / 100
 320 ms 31148 KB 
#include<bits/stdc++.h>

using namespace std;
using ll = long long;

const int M = 1e3 + 10;
const int N = 5e5 + 10;

int n, q;
ll d[N];

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin >> n >> q;
    for(int i = 1; i <= n; i++) 
        cin >> d[i];
    ll D[n + 1] = {};
    D[0] = 1;
    for(int i = 1; i <= n; i++) 
        D[i] = D[i - 1] * ((d[i] + D[i - 1] - 1)/ D[i - 1]);
    int nxt[n + 1] = {};
    nxt[n] = n + 1;
    for(int i = n - 1; i >= 0; i--) {
        nxt[i] = (D[i] == D[i + 1] ? nxt[i + 1] : i + 1);
    }
    // for(int i = 0; i <= n; i++) 
    //     cout << D[i] << ' ';
    // cout << '\n';
    for(int i = 1; i <= q; i++) {
        ll t, l, r;
        cin >> t >> l >> r;
        int x = 1, pos = t;
        ll ans = (l <= t && t <= r);
        while(x <= n) {
            ll pos_r = -x + (pos + x - 1) / D[x] * D[x];
            ll pos_l = pos_r - (nxt[x] - 1 - x);
            
            // cout << x << ' ' << nxt[x] << '\n';
            // cout << pos_l << ' ' << pos_r << '\n';

            ll lb = max(pos_l, l), rb = min(pos_r, r);
            ans += max(rb - lb + 1, 0ll);
            pos = pos_l;
            x = nxt[x];
        }
        cout << ans << '\n';
    }
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 213 ms 28584 KB Output is correct
2 Correct 179 ms 28448 KB Output is correct
3 Correct 186 ms 28592 KB Output is correct
4 Correct 179 ms 28504 KB Output is correct
5 Correct 181 ms 28432 KB Output is correct
6 Correct 176 ms 28488 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 344 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct

Subtask #3
81.0 / 81.0

# Verdict Execution time Memory Grader output
1 Correct 213 ms 28584 KB Output is correct
2 Correct 179 ms 28448 KB Output is correct
3 Correct 186 ms 28592 KB Output is correct
4 Correct 179 ms 28504 KB Output is correct
5 Correct 181 ms 28432 KB Output is correct
6 Correct 176 ms 28488 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 183 ms 27068 KB Output is correct
14 Correct 196 ms 27632 KB Output is correct
15 Correct 171 ms 26220 KB Output is correct
16 Correct 180 ms 26976 KB Output is correct
17 Correct 260 ms 31032 KB Output is correct
18 Correct 259 ms 31024 KB Output is correct
19 Correct 259 ms 31092 KB Output is correct
20 Correct 261 ms 31148 KB Output is correct
21 Correct 259 ms 31032 KB Output is correct
22 Correct 258 ms 31136 KB Output is correct
23 Correct 254 ms 30924 KB Output is correct
24 Correct 255 ms 31128 KB Output is correct
25 Correct 182 ms 28512 KB Output is correct
26 Correct 181 ms 28444 KB Output is correct
27 Correct 263 ms 30568 KB Output is correct
28 Correct 291 ms 30912 KB Output is correct
29 Correct 282 ms 30412 KB Output is correct
30 Correct 280 ms 30592 KB Output is correct
31 Correct 320 ms 30840 KB Output is correct
32 Correct 177 ms 27096 KB Output is correct
33 Correct 0 ms 212 KB Output is correct