oj.uz

Submission #57673

# Submission time Handle Problem Language Result Execution time Memory
57673 2018-07-15T19:08:46 Z Benq Worst Reporter 3 (JOI18_worst_reporter3) C++14
19 / 100
 1124 ms 5548 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
using namespace __gnu_pbds;
 
typedef long long ll;
typedef long double ld;
typedef complex<ld> cd;

typedef pair<int, int> pi;
typedef pair<ll,ll> pl;
typedef pair<ld,ld> pd;

typedef vector<int> vi;
typedef vector<ld> vd;
typedef vector<ll> vl;
typedef vector<pi> vpi;
typedef vector<pl> vpl;
typedef vector<cd> vcd;

template <class T> using Tree = tree<T, null_type, less<T>, rb_tree_tag,tree_order_statistics_node_update>;

#define FOR(i, a, b) for (int i=a; i<(b); i++)
#define F0R(i, a) for (int i=0; i<(a); i++)
#define FORd(i,a,b) for (int i = (b)-1; i >= a; i--)
#define F0Rd(i,a) for (int i = (a)-1; i >= 0; i--)

#define sz(x) (int)(x).size()
#define mp make_pair
#define pb push_back
#define f first
#define s second
#define lb lower_bound
#define ub upper_bound
#define all(x) x.begin(), x.end()

const int MOD = 1000000007;
const ll INF = 1e18;
const int MX = 500005;

int N,Q;
int D[MX];

void input() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> N >> Q;
    D[0] = 1;
    FOR(i,1,N+1) {
        cin >> D[i];
        D[i] = ((D[i]+D[i-1]-1)/D[i-1])*D[i-1];
        // cout << D[i] << "\n";
    }
}

int getPos(int T, int M) {
    return (T/D[M])*D[M]-M;
}

int get(int T, int hi) {
    int L = -1, R = N;
    while (L < R) {
        int M = (L+R+1)/2;
        if (getPos(T,M) >= hi) L = M;
        else R = M-1;
    }
    return L;
    // how many reporters >= position hi 
    // last reporter >= position hi 
}

int main() {
    input();
    F0R(i,Q) {
        int T,L,R; cin >> T >> L >> R;
        cout << get(T,L)-get(T,R+1) << "\n";
    }
}

/* Look for:
* the exact constraints (multiple sets are too slow for n=10^6 :( ) 
* special cases (n=1?)
* overflow (ll vs int?)
* array bounds
*/

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 773 ms 5220 KB Output is correct
2 Correct 762 ms 5348 KB Output is correct
3 Correct 745 ms 5456 KB Output is correct
4 Correct 787 ms 5456 KB Output is correct
5 Correct 725 ms 5472 KB Output is correct
6 Correct 1124 ms 5548 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 5548 KB Output is correct
2 Correct 4 ms 5548 KB Output is correct
3 Correct 3 ms 5548 KB Output is correct
4 Correct 2 ms 5548 KB Output is correct
5 Correct 4 ms 5548 KB Output is correct
6 Correct 3 ms 5548 KB Output is correct

Subtask #3
0 / 81.0

# Verdict Execution time Memory Grader output
1 Correct 773 ms 5220 KB Output is correct
2 Correct 762 ms 5348 KB Output is correct
3 Correct 745 ms 5456 KB Output is correct
4 Correct 787 ms 5456 KB Output is correct
5 Correct 725 ms 5472 KB Output is correct
6 Correct 1124 ms 5548 KB Output is correct
7 Correct 4 ms 5548 KB Output is correct
8 Correct 4 ms 5548 KB Output is correct
9 Correct 3 ms 5548 KB Output is correct
10 Correct 2 ms 5548 KB Output is correct
11 Correct 4 ms 5548 KB Output is correct
12 Correct 3 ms 5548 KB Output is correct
13 Runtime error 3 ms 5548 KB Execution killed with signal 8 (could be triggered by violating memory limits)
14 Halted 0 ms 0 KB -