Submission #135147

#	Time	Username	Problem	Language	Result	Execution time	Memory
135147		doowey	Worst Reporter 3 (JOI18_worst_reporter3)	C++14	100 / 100	905 ms	25548 KiB

worst_reporter3

#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef pair<ll, ll> pii;
 
#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);
 
const int N = (int)5e5 + 9;
const ll MAX = (ll)2e18;
ll per[N];

ll compute(int id, ll tim){
    return (tim-(tim%per[id]))-id;
}

int main(){
    fastIO;
    int n, q;
    cin >> n >> q;
    cin >> per[1];
    for(int i = 2; i <= n; i ++ ){
        cin >> per[i];
        per[i] = (per[i - 1] * (((per[i] - 1) / per[i-1]) + 1));
    }
    ll L, R, T;
    ll res;
    int lf, rf, md;
    int p1, p2;
    for(int i = 0 ; i < q; i ++ ){
        cin >> T >> L >> R;
        lf = 0;
        rf = n + 1;
        while(lf + 1 < rf){
            md=(lf+rf)/2;
            if(compute(md, T) < L)
                rf = md;
            else
                lf = md;
        }
        p1 = lf;
        lf = 0;
        rf = n + 1;
        while(lf + 1 < rf){
            md = (lf + rf) / 2;
            if(compute(md, T) <= R){
                rf = md;
            }
            else{
                lf = md;
            }
        }
        p2 = lf;
        cout << max(0, p1 - p2) + (T >= L && T <= R) << "\n";
    }
    return 0;
}

Compilation message (stderr)

worst_reporter3.cpp: In function 'int main()':
worst_reporter3.cpp:32:8: warning: unused variable 'res' [-Wunused-variable]
     ll res;
        ^~~

• Subtask 1: 7 / 7
• Subtask 2: 12 / 12
• Subtask 3: 81 / 81