제출 #1255433

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1255433		robijoy	Finding Routers (IOI20_routers)	C++17	77.94 / 100	1 ms	584 KiB

routers

/*
 *   Starting with the name of almighty ALLAH
 */

#include "routers.h"
using namespace std;

const int N = 1e5+5;
int dp[N];


vector<int> find_routers(int size, int n, int q) {
    for (int i = 0; i < N; ++i)
    {
        dp[i] = -1;
    }
    vector<int> ans;
    ans.push_back(0);
    int last = 0;
    for (int i = 0; i < n-1; ++i)
    {
        int l = ans[ans.size()-1]+1, r = size;
        int an = 0;
        while(l<=r) {
            int mid = (l+r)>>1;
            int x = 0;

            if(dp[mid]!=-1) {
                x = dp[mid];
            }else {   
                x = use_detector(mid);
                dp[mid] = x;
            }

            if(x == last) {
                l = mid+1;
            }else{
                an = mid;
                r = mid-1;
            }
        }
        int lasti = ans[ans.size()-1];
        int dis = an - lasti;
        dis--;
        ans.push_back(lasti+(dis*2));
        last++;
    }
    return ans;
}

• Subtask 1: 16 / 16
• Subtask 2: 21 / 21
• Subtask 3: 23 / 23
• Subtask 4: 17.9392 / 40