Submission #1277754

#	Time	Username	Problem	Language	Result	Execution time	Memory
1277754		quanduongxuan12	Gap (APIO16_gap)	C++20	70 / 100	45 ms	3232 KiB

gap

#include "gap.h"
#include <bits/stdc++.h>
using namespace std;
#define name "gap"
#define MAXN 100005
#define pb push_back
#define pf push_front
#define ll long long
#define ii pair<int, int>
#define fs first
#define sc second
#define ill pair<int, ll>
#define lli pair<ll, int>
#define llll pair<ll, ll>
#define all(v) v.begin(),v.end()
#define uni(v) v.erase(unique(all(v)),v.end())
#define bit(n,i) (((n)>>(i))&1)
#define FOR(i,a,b) for (int i=(a),_b=(b); i<=_b; i++)
#define FORD(i,a,b) for (int i=(a),_b=(b); i>=_b; i--)
#define MASK(i) (1LL<<(i))
const ll INF=1e18;
const int MOD=1e9+7;
void add(int &u, int v){
    u+=v;
    if (u>=MOD) u-=MOD;
}
void sub(int &u, int v){
    u-=v;
    if (u<0) u+=MOD;
}
void minimize(int &u, int v){
    u=min(u,v);
}
void maximize(ll &u, ll v){
    u=max(u,v);
}
long long Rand(long long l, long long r){
    ll tmp=0;
    FOR(i,1,4) tmp=((tmp<<15)^(((1<<15)-1)&rand()));
    return l+tmp%(r-l+1);
}
int n;
ll a[MAXN];
ll findGap(int T, int N){
    n=N;
    if (T==1){
        ll kq=0;
        vector<ll> vec;
        ll l=0,r=INF;
        while (l<=r){
            MinMax(l,r,&l,&r);
            if (l==-1) break;
            vec.pb(l);
            if (r!=l) vec.pb(r);
            ++l;
            --r;
        }
        sort(all(vec));
        FOR(i,0,(int)vec.size()-2){
            maximize(kq,vec[i+1]-vec[i]);
        }
        return kq;
    }
    ll l=0,r=INF;
    MinMax(l,r,&l,&r);
    if (n==2) return r-l;
    ll d=(r-l-1)%(n-2)==0?(r-l-1)/(n-2):(r-l-1)/(n-2)+1;
    ll res=0;
    ll u,v;
    ll x=l+1;
    FOR(i,1,n-2){
        MinMax(x,x+d-1,&u,&v);
        maximize(res,u-l);
        l=max(l,v);
        x+=d;
    }
    maximize(res,r-l);
    return res;
}

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