Submission #377763

#	Time	Username	Problem	Language	Result	Execution time	Memory
377763		rrrr10000	Fortune Telling 2 (JOI14_fortune_telling2)	C++14	0 / 100	1 ms	364 KiB

fortune_telling2

#include <bits/stdc++.h>
using namespace std;
#define rep(i, n)  for(long long i=0;i<(long long)(n);i++)
#define REP(i,k,n) for(long long i=k;i<(long long)(n);i++)
#define pb emplace_back
#define lb(v,k) (lower_bound(all(v),(k))-v.begin())
#define ub(v,k) (upper_bound(all(v),(k))-v.begin())
#define fi first
#define se second
#define pi M_PI
#define PQ(T) priority_queue<T>
#define SPQ(T) priority_queue<T,vector<T>,greater<T>>
#define dame(a) {out(a);return 0;}
#define decimal cout<<fixed<<setprecision(15);
#define all(a) a.begin(),a.end()
#define rsort(a) {sort(all(a));reverse(all(a));}
#define dupli(a) {sort(all(a));a.erase(unique(all(a)),a.end());}
typedef long long ll;
typedef pair<ll,ll> P;
typedef tuple<ll,ll,ll> PP;
typedef tuple<ll,ll,ll,ll> PPP;
using vi=vector<ll>;
using vvi=vector<vi>;
using vvvi=vector<vvi>;
using vvvvi=vector<vvvi>;
using vp=vector<P>;
using vvp=vector<vp>;
using vb=vector<bool>;
using vvb=vector<vb>;
const ll inf=1001001001001001001;
const ll INF=1001001001;
const ll mod=1000000007;
const double eps=1e-10;
template<class T> bool chmin(T&a,T b){if(a>b){a=b;return true;}return false;}
template<class T> bool chmax(T&a,T b){if(a<b){a=b;return true;}return false;}
template<class T> void out(T a){cout<<a<<'\n';}
template<class T> void outp(T a){cout<<'('<<a.fi<<','<<a.se<<')'<<'\n';}
template<class T> void outvp(T v){rep(i,v.size())cout<<'('<<v[i].fi<<','<<v[i].se<<')';cout<<'\n';}
template<class T> void outvvp(T v){rep(i,v.size())outvp(v[i]);}
template<class T> void outv(T v){rep(i,v.size()){if(i)cout<<' ';cout<<v[i];}cout<<'\n';}
template<class T> void outvv(T v){rep(i,v.size())outv(v[i]);}
template<class T> bool isin(T x,T l,T r){return (l)<=(x)&&(x)<=(r);}
template<class T> void yesno(T b){if(b)out("yes");else out("no");}
template<class T> void YesNo(T b){if(b)out("Yes");else out("No");}
template<class T> void YESNO(T b){if(b)out("YES");else out("NO");}
template<class T> void outset(T s){auto itr=s.begin();while(itr!=s.end()){if(itr!=s.begin())cout<<' ';cout<<*itr;itr++;}cout<<'\n';}
void outs(ll a,ll b){if(a>=inf-100)out(b);else out(a);}
ll gcd(ll a,ll b){if(b==0)return a;return gcd(b,a%b);}
ll modpow(ll a,ll b){ll res=1;a%=mod;while(b){if(b&1)res=res*a%mod;a=a*a%mod;b>>=1;}return res;}
class BIT{
    vi bit;
public:
    BIT(ll n):bit(n){}
    void add(ll i,ll x){
        for(int j=i;j<bit.size();j=j|(j+1))bit[j]+=x;
    }
    ll get(ll i){
        ll res=0;
        for(int j=i;j>=0;j=((j+1)&j)-1)res+=bit[j];
        return res;
    }
    ll get(ll a,ll b){
        return get(b-1)-get(a-1);
    }
};
queue<ll> que;
class segtree{
    ll N=1;
    vvp segl,segr;
    void add(ll id,ll a,ll b,ll k,ll l,ll r){
        if(r-l==1){
            segl[k].pb(a,id);
            segr[k].pb(b,id);
            return;
        }
        ll md=(l+r)/2;
        if(md<=a)add(id,a,b,k*2+2,md,r);
        else if(md>=b)add(id,a,b,k*2+1,l,md);
        else{
            segl[k].pb(a,id);
            segr[k].pb(b,id);
        }
    }
public:
    segtree(vp v){
        while(N<v.size())N*=2;
        segl=vvp(N*2-1);segr=vvp(N*2-1);
        rep(i,v.size())if(v[i].fi!=v[i].se)add(i,v[i].fi,v[i].se,0,0,N);
        rep(i,N*2-1){
            sort(all(segr[i]));
            rsort(segl[i]);
        }
    }
    void query(ll x){
        ll k=x+N-1,l=x,r=x+1,cnt=0;
        while(segl[k].size()){
            que.push(segl[k].back().se);segl[k].pop_back();
        }
        while(k>0){
            k=(k-1)/2;
            if(l>>cnt&1)l-=1<<cnt;
            if(r>>cnt&1)r+=1<<cnt;
            cnt++;
            ll md=(l+r)/2;
            // cout<<' '<<md<<endl;
            if(md<=x){
                while(segr[k].size()&&segr[k].back().fi>x){
                    que.push(segr[k].back().se);segr[k].pop_back();
                }
            }
            else{
                while(segl[k].size()&&segl[k].back().fi<=x){
                    // out(x);
                    que.push(segl[k].back().se);segl[k].pop_back();
                }
            }
        }
    }
};
int main(){
    ll n,k;cin>>n>>k;
    vp v(n);
    rep(i,n)cin>>v[i].fi>>v[i].se;
    vb swapped(n,false);
    rep(i,n){
        if(v[i].fi>v[i].se){
            swap(v[i].fi,v[i].se);
            swapped[i]=true;
        }
    }
    vi t(k);
    rep(i,k)cin>>t[i];
    vi srt;
    rep(i,n){
        srt.pb(v[i].fi);srt.pb(v[i].se);
    }
    rep(i,k)srt.pb(t[i]);
    dupli(srt);
    BIT bit(srt.size());
    vp id(n);
    rep(i,n){
        id[i].fi=lb(srt,v[i].fi);
        id[i].se=lb(srt,v[i].se);
    }
    vb done(n,false);
    ll ans=0;
    rep(i,n)if(v[i].fi==v[i].se){
        ans+=v[i].fi;done[i]=true;
    }
    segtree seg(id);
    // outvp(id);
    for(int i=k-1;i>=0;i--){
        ll l=lb(srt,t[i]);
        // seg.query(l);
        while(!que.empty()){
            ll u=que.front();que.pop();
            if(done[u])continue;
            // cout<<l<<' '<<u<<endl;
            done[u]=true;
            ll num=bit.get(id[u].se,srt.size());
            if(num&1)ans+=v[u].fi;
            else ans+=v[u].se;
        }
        bit.add(l,1);
    }
    rep(j,n)if(!done[j]){
        ll num=bit.get(id[j].se,srt.size());
        if(swapped[j])num++;
        if(num&1)ans+=v[j].se;
        else ans+=v[j].fi;
    }
    out(ans);
}

Compilation message (stderr)

fortune_telling2.cpp: In member function 'void BIT::add(ll, ll)':
fortune_telling2.cpp:55:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 |         for(int j=i;j<bit.size();j=j|(j+1))bit[j]+=x;
      |                     ~^~~~~~~~~~~
fortune_telling2.cpp: In constructor 'segtree::segtree(vp)':
fortune_telling2.cpp:86:16: warning: comparison of integer expressions of different signedness: 'll' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   86 |         while(N<v.size())N*=2;
      |               ~^~~~~~~~~

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