Submission #742889

#	Time	Username	Problem	Language	Result	Execution time	Memory
742889		boyliguanhan	Gap (APIO16_gap)	C++17	30 / 100	60 ms	1184 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
#define ll long long
using namespace std;
ll findGap(int T, int N)
{

    ll l, r, ans=0;
    MinMax(0,1e18, &l, &r);
    if(T-1) {
        ll sz = (r-l+N-2)/(N-1);
        ll x,y,z=l;
        for(ll i=0;i<N-1;i++) {
            MinMax(l+i*sz,min(r,l+(i+1)*sz)-1,&x,&y);
            if(x+1)ans=max(ans,x-z),z=y;
        }
        ans=max(ans,r-z);
    } else {
        for(ll i=0;i<(N-1>>1);i++) {
            ll pl, pr; MinMax(min(r-1,l+1),r-1, &pl, &pr);ans = max(max(pl-l, r-pr), ans);l=pl,r=pr;
        }
        if(N&1^1)ans=max(ans,r-l);
    }
    return ans;
}

Compilation message (stderr)

gap.cpp: In function 'long long int findGap(int, int)':
gap.cpp:19:24: warning: suggest parentheses around '-' inside '>>' [-Wparentheses]
   19 |         for(ll i=0;i<(N-1>>1);i++) {
      |                       ~^~
gap.cpp:22:13: warning: suggest parentheses around arithmetic in operand of '^' [-Wparentheses]
   22 |         if(N&1^1)ans=max(ans,r-l);
      |            ~^~

• Subtask 1: 30 / 30
• Subtask 2: 0 / 70