Submission #527074

#	Time	Username	Problem	Language	Result	Execution time	Memory
527074		AdamGS	Coin Collecting (JOI19_ho_t4)	C++17	100 / 100	51 ms	6460 KiB

joi2019_ho_t4

#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
#define rep(a, b) for(int a = 0; a < (b); ++a)
#define st first
#define nd second
#define pb push_back
const int LIM=1e5+7;
const ll INF=1e18+7;
ll ile[LIM][2];
vector<pair<ll,ll>>V;
int main() {
    ios_base::sync_with_stdio(0); cin.tie(0);
    ll n;
    cin >> n;
    ll ans=0;
    rep(i, 2*n) {
        ll a, b;
        cin >> a >> b;
        ans+=max(1-a, 0ll);
        a=max(a, 1ll);
        ans+=max(a-n, 0ll);
        a=min(a, n);
        ans+=max(1-b, 0ll);
        b=max(b, 1ll);
        ans+=max(b-2, 0ll);
        b=min(b, 2ll);
        --a; --b;
        ++ile[a][b];
    }
    rep(i, n) {
        --ile[i][0]; --ile[i][1];
        if(ile[i][0]<0 && ile[i][1]>0) {
            ll p=min(abs(ile[i][0]), ile[i][1]);
            ans+=p;
            ile[i][0]+=p;
            ile[i][1]-=p;
        }
        if(ile[i][0]>0 && ile[i][1]<0) {
            ll p=min(abs(ile[i][1]), ile[i][0]);
            ans+=p;
            ile[i][0]-=p;
            ile[i][1]+=p;
        }
        ans+=abs(ile[i][0]);
        ans+=abs(ile[i][1]);
        ile[i+1][0]+=ile[i][0];
        ile[i+1][1]+=ile[i][1];
    }
    cout << ans << '\n';
}

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