Submission #221380

#	Time	Username	Problem	Language	Result	Execution time	Memory
221380		zoooma13	Gap (APIO16_gap)	C++14	100 / 100	79 ms	2096 KiB

gap

#include "bits/stdc++.h"
#include "gap.h"
using namespace std;

long long findGap(int T, int N){
    if(N <= 8 || T == 1){
        vector <long long> A(N);
        MinMax(0 ,1e18 ,&A[0] ,&A[N-1]);
        for(int i=1; i<(N+1)/2; i++)
            MinMax(A[i-1]+1 ,A[N-i]-1 ,&A[i] ,&A[N-i-1]);
        long long ret = 1;
        for(int i=1; i<N; i++)
            ret = max(ret ,A[i]-A[i-1]);
        return ret;
    }

    long long mn ,mx ,mx_dist = 1 ,s ,t;
    MinMax(0 ,1e18 ,&mn ,&mx);
    long long d = (mx-mn)/(N-1) ,fh = (mx-mn)%(N-1) ,lst = mn;
    vector <long long> rngs(N ,0);
    rngs[0] = mn;
    for(int i=1; i<N; i++)
        rngs[i] += (i <= fh) + rngs[i-1] + d;
    for(int i=0; i<N-1; i++){
        MinMax(rngs[i] ,rngs[i+1]-1 ,&s ,&t);
        if(s != -1){
            mx_dist = max(mx_dist ,s-lst);
            lst = t;
        }
    }
    return max(mx-lst ,mx_dist);
}

• Subtask 1: 30 / 30
• Subtask 2: 70 / 70