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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#96500#2929. Concert RehearsalAbdelrahman_KWA 5ms8256kbC++142.0kb2023-04-13 23:05:402023-04-13 23:05:45

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-04-13 23:05:45]
  • 评测
  • 测评结果:WA
  • 用时:5ms
  • 内存:8256kb
  • [2023-04-13 23:05:40]
  • 提交

answer

#include <bits/stdc++.h>
using namespace std;
#define ll long long
typedef long double ld;
#define F first
#define S second
const int N = 1e5 + 2, mod = 1e9 + 7;
const ld eps = 1e-6;
int grid[57][57];
typedef complex<ld> point;
#define X real()
#define Y imag()

int main() {
    ll n, p, k;
    cin>>n>>p>>k;
    ll arr[2 * n + 5], sum = 0;
    ll pref[2 * n + 5];
    for(int i = 0; i < n; i++){
        cin>>arr[i];
        sum += arr[i];
        arr[i + n] = arr[i];
        pref[i] = sum;;
    }
    ll cur = 0;
    for(int i = 0; i < n; i++){
        cur += arr[i];
        pref[i + n] = sum + cur;
    }
    ll people[n + 5], next[n + 5];
    for(int i = 0; i < n; i++){
        people[i] = (p / sum) * n;
        ll x = p % sum;
        ll start = i, end = i + n - 1, ans = 0;
        while(start <= end){
            ll mid = (start + end) / 2, a;
            a = pref[mid] - (i ? pref[i - 1] : 0);
            if(a <= x){
                start = mid + 1;
                ans = mid - i + 1;
            }
            else
                end = mid - 1;
        }
        people[i] += ans;
        next[i] = (ans + i) % n;
    }
//    for(int i = 0; i < n; i++){
//        cout<<people[i]<<' '<<next[i]<<endl;
//    }
    ll acc[4 * N + 5];
    int last_day[4 * N + 5];
    memset(last_day, -1, sizeof last_day);
    last_day[0] = 1;
    int now = 0;
    acc[0] = 0;
    acc[1] = people[0];
    for(int day = 2; day <= (ll)4e5; day++){
        now = next[now];
        acc[day] = acc[day - 1] + people[now];
        if(last_day[now] != -1){
            ll y = acc[day] - (acc[last_day[now]]);
//            ll y = (last_day[now] == 0)? acc[day] - acc[last_day[now]] : acc[day];
            ll fans =  acc[last_day[now]] + y * ((k - last_day[now]) / (day - last_day[now]));
            ll z = ((k - last_day[now]) % (day - last_day[now]));
            fans += acc[last_day[now] + z - 1] - acc[last_day[now] - 1];
            return cout<<fans / n, 0;
        }
        last_day[now] = day;
    }
    return 0;
}

详细

Test #1:

score: 100
Accepted
time: 5ms
memory: 8256kb

input:

3 20 10
6
9
5

output:

10

result:

ok single line: '10'

Test #2:

score: 0
Accepted
time: 1ms
memory: 7976kb

input:

5 11 2
5
5
5
5
5

output:

0

result:

ok single line: '0'

Test #3:

score: 0
Accepted
time: 2ms
memory: 7916kb

input:

7 11 3
1
2
3
4
5
6
7

output:

1

result:

ok single line: '1'

Test #4:

score: -100
Wrong Answer
time: 1ms
memory: 8052kb

input:

4 8 9
2
7
2
3

output:

3

result:

wrong answer 1st lines differ - expected: '4', found: '3'