Submission #861800

#	Time	Username	Problem	Language	Result	Execution time	Memory
861800		keaucucal	Self Study (JOI22_ho_t2)	C++14	62 / 100	1060 ms	9156 KiB

Main

// oj.uz SELF STUDY (JOI22_HO_T2)
#include <iostream>
#include <vector>
#include <utility>
#include <algorithm>
using namespace std;

using ll = long long;
const ll MAX_NUM = 2 * 1e9 * 1e9; // Ai or Bi * M, 2 is because (l + r) / 2

int N, M;
vector<pair<int, int>> vec;

bool ifFail(const ll passline) {
    ll comprehension = 0;
    int cnt_course = 0;
    int cnt = M;

    ll t = N * M;
    while(t--) {
        if(comprehension < passline) {
            if(vec[cnt_course].first > vec[cnt_course].second && cnt > 0) {
                comprehension += vec[cnt_course].first;
                cnt--;
            } else comprehension += vec[cnt_course].second;
        }

        if(comprehension >= passline) {
            // cout << comprehension << '\n';
            cnt_course++;
            comprehension = 0;
            cnt = M;
        }
    }
    // cout << passline << ' ' << cnt_course << '\n';
    return cnt_course < N;
}

int main() {
    cin >> N >> M;
    vec.resize(N);
    for(auto &i : vec) cin >> i.first;
    for(auto &i : vec) cin >> i.second;

    ll l = 1, r = MAX_NUM;
    while(l < r) {
        ll mid = (l + r) / 2 + 1;

        if(ifFail(mid)) {
            r = mid - 1;
        }
        else {
            l = mid;
        }
    }

    cout << l << '\n';
    return 0;
}

• Subtask 1: 10 / 10
• Subtask 2: 25 / 25
• Subtask 3: 27 / 27
• Subtask 4: 0 / 29
• Subtask 5: 0 / 9