Submission #1100717

#	Time	Username	Problem	Language	Result	Execution time	Memory
1100717		damwuan	Fortune Telling 2 (JOI14_fortune_telling2)	C++17	0 / 100	3 ms	16720 KiB

fortune_telling2

#include<bits/stdc++.h>
using namespace std;
#define pb push_back
#define fi first
#define se second
#define for1(i,j,k) for(int i=j;i<=k;i++)
#define for2(i,j,k) for(int i=j;i>=k;i--)
#define for3(i,j,k,l) for(int i=j;i<=k;i+=l)
#define bit(n,i) ((n>>i)&1)
#define all(x) x.begin(),x.end()
#define int long long
typedef long long ll;
typedef pair<int,int> pii;
typedef double ld;
typedef pair<ld,ld> pdd;
typedef pair<ll,ll> pll;
const ll maxn=2e5+69;
const ll offset=2e5;
const ll inf=1e18;
const int base=350;
const ll mod=998244353;

int n,k;
int a[maxn],b[maxn],t[maxn];
pii c[maxn];
int rmq[maxn][19];
vector<pii> qr[maxn];
int dd[maxn];

int st[maxn];
void Update(int u)
{
    for(;u<=n;u+=u&-u) st[u]+=1;
}
int Get1(int u)
{
    int r=0;
    for(;u>0;u-=u&-u) r+=st[u];
    return r;
}
int Get(int l,int r)
{
    return Get1(r)-Get1(l-1);
}

int Get_max(int l,int r)
{
    int lg=__lg(r-l+1);
    return max(rmq[l][lg],rmq[r-(1<<lg)+1][lg]);
}

void sol()
{
    cin >> n>>k;
    for1(i,1,n) cin >> a[i]>> b[i];
    for1(i,1,k)
    {
        cin >> t[i];
        c[i]={t[i],i};
    }
    sort(c+1,c+1+k);
    for1(i,1,k) rmq[i][0]=c[i].se;
    for1(j,1,18) for1(i,1,k-(1<<j)+1) rmq[i][j]=max(rmq[i][j-1],rmq[i+(1<<(j-1))][j-1]);
    for1(i,1,n)
    {
        int l=min(a[i],b[i]);
        int r=max(a[i],b[i]);
        int cl= upper_bound(c+1,c+1+k,make_pair(l,-1LL))-c;
        int cr=upper_bound(c+1,c+1+k,make_pair(r,-1LL))-c-1;
        int j=0;
        if (cl<=cr)
        {
            j=Get_max(cl,cr);
            if (a[i]<b[i]) swap(a[i],b[i]);
        }
        qr[cr+1].pb({i,j});
//        cerr<< i<<' '<<j<<" c "<<a[i]<<' '<<b[i]<<'\n';
    }

    for2(i,k,1)
    {
//        cerr<< c[i].se<<'\n';
        Update(c[i].se);
        for(pii x: qr[i])
        {
            dd[x.fi]=Get(x.se+1,n)&1;
//            cerr<< x.fi<<' '<<dd[x.fi]<<'\n';
        }
//        cerr<<i<<'\n';
    }
//    return;
    int res=0;
    for1(i,1,n)
    {
        if (!dd[i]) res+=a[i];
        else res+=b[i];
    }
    cout << res;
}

int32_t main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
//    freopen("1017G.inp","r",stdin);
//    freopen("1017G.out","w",stdout);

    int t=1;//cin >> t;
    while (t--) {
        sol();
    }
}

/*
4 12
1 2 3
1 3
2 3
2 1
1 2
1 2
1 4
1 1
1 1
2 4
2 3
1 1
3 4



*/

• Subtask 1: 0 / 4
• Subtask 2: 0 / 31
• Subtask 3: 0 / 65