Submission #1150609

#	Time	Username	Problem	Language	Result	Execution time	Memory
1150609		koukirocks	Coin Collecting (JOI19_ho_t4)	C++20	0 / 100	1 ms	2632 KiB

joi2019_ho_t4

#include<bits/stdc++.h>
#define speed ios_base::sync_with_stdio(0); cin.tie(0)
#define all(x) x.begin()+1, x.end()
#define F first
#define S second

using namespace std;

typedef long long ll;
typedef pair<int,int> pii;

ll cnt[100010][3];

int main() {
    speed;
    ll n;
    cin>>n;
    ll ans=0;
    memset(cnt,0,sizeof(cnt));
    for (ll i=1;i<=2*n;i++) {
        ll x,y;
        cin>>x>>y;
        if (x<=1) {
            if (y<=1) {
                ans+=(1-x)+(1-y);
                cnt[1][1]++;
            } else {
                cnt[1][2]++;
                ans+=(1-x)+(y-2);
            }
        } else if (n<=x) {
            if (y<=1) {
                cnt[n][1]++;
                ans+=(x-n)+(1-y);
            } else {
                cnt[n][2]++;
                ans+=(x-n)+(y-2);
            }
        } else {
            if (y<=1) {
                cnt[x][1]++;
                ans+=(1-y);
            } else {
                cnt[x][2]++;
                ans+=(y-2);
            }
        }
    }
    // cout<<ans<<"\n";
    ll now[]={0,0,0};
    for (int i=1;i<=n;i++) {
        now[1]+=cnt[i][1];
        now[2]+=cnt[i][2];
    }
    for (int i=1;i<=n;i++) {
        ll ch=1000;
        ll vu=-1;
        now[1]-=cnt[i][1];
        now[2]-=cnt[i][2];
        for (int up=0;up<=2;up++) {
            ll dn=2-up;
            ll du=up-cnt[i][2];
            ll dd=dn-cnt[i][1];
            if (now[2]-du<0 or now[1]-dd<0) continue;
            if (ch>abs(du)+abs(dd) or (ch==abs(du)+abs(dd) and up==1)) {
                ch=abs(du)+abs(dd);
                vu=up;
            }
        }
        ll vd=2-vu;
        ll du=vu-cnt[i][2],dd=vd-cnt[i][1];
        ans+=abs(du)+abs(dd);
        cnt[i][2]+=du;cnt[i+1][2]-=du;now[2]-=du;
        cnt[i][1]+=dd;cnt[i+1][1]-=dd;now[1]-=dd;
    }
    // cout<<ans<<"\n";
    for (int i=1;i<=n;i++) {
        // cout<<cnt[i][1]<<" "<<cnt[i][2]<<" cnt\n";
        ans+=cnt[i][1]!=1;
    }
    cout<<ans<<"\n";
    return 0;
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 29
• Subtask 3: 0 / 63