Submission #1302547

#	Time	Username	Problem	Language	Result	Execution time	Memory
1302547		lunarecho	Finding Routers (IOI20_routers)	C++20	100 / 100	2 ms	592 KiB

routers

#include "routers.h"
using namespace std;

std::vector<int> find_routers(int len, int n, int q) {
    vector<int> memorization(len + 1, -1), ans_({0});
    for(int i=0;i<n-1;++i) {
        int l = 0, r = len, ans = -1;
        while(l <= r) {
            int mid = (l + r) / 2;
            if(memorization[mid] == -1) {
                memorization[mid] = use_detector(mid);
            }
            if(memorization[mid] <= i) {
                l = mid + 1;
            } else {
                ans = mid;
                r = mid - 1;
            }
        }
        int dt = ans - ans_.back();
        --dt;
        ans_.push_back(ans_.back() + (dt * 2));
    }
    return ans_;
}

• Subtask 1: 16 / 16
• Subtask 2: 21 / 21
• Subtask 3: 23 / 23
• Subtask 4: 40 / 40