Submission #431402

#	Time	Username	Problem	Language	Result	Execution time	Memory
431402		MarcoMeijer	Selling RNA Strands (JOI16_selling_rna)	C++14	100 / 100	591 ms	73752 KiB

selling_rna

#include <bits/stdc++.h>
using namespace std;
 
// macros
typedef long long ll;
typedef long double ld;
typedef pair<int, int> ii;
typedef pair<ll, ll> lll;
typedef tuple<int, int, int> iii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef vector<iii> viii;
typedef vector<ll> vll;
typedef vector<lll> vlll;
#define REP(a,b,c) for(int a=int(b); a<int(c); a++)
#define RE(a,c) REP(a,0,c)
#define RE1(a,c) REP(a,1,c+1)
#define REI(a,b,c) REP(a,b,c+1)
#define REV(a,b,c) for(int a=int(c-1); a>=int(b); a--)
#define FOR(a,b) for(auto& a : b)
#define all(a) a.begin(), a.end()
#define INF 1e18
#define EPS 1e-9
#define pb push_back
#define popb pop_back
#define fi first
#define se second
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
 
// input
template<class T> void IN(T& x) {cin >> x;}
template<class H, class... T> void IN(H& h, T&... t) {IN(h); IN(t...); }
 
// output
template<class T1, class T2> void OUT(const pair<T1,T2>& x);
template<class T> void OUT(const vector<T>& x);
template<class T> void OUT(const T& x) {cout << x;}
template<class H, class... T> void OUT(const H& h, const T&... t) {OUT(h); OUT(t...); }
template<class T1, class T2> void OUT(const pair<T1,T2>& x) {OUT(x.fi,' ',x.se);}
template<class T> void OUT(const vector<T>& x) {RE(i,x.size()) OUT(i==0?"":" ",x[i]);}
template<class... T> void OUTL(const T&... t) {OUT(t..., "\n"); }
template<class H> void OUTLS(const H& h) {OUTL(h); }
template<class H, class... T> void OUTLS(const H& h, const T&... t) {OUT(h,' '); OUTLS(t...); }
 
// dp
template<class T> bool ckmin(T&a, T&b) { bool bl = a > b; a = min(a,b); return bl;}
template<class T> bool ckmax(T&a, T&b) { bool bl = a < b; a = max(a,b); return bl;}
 
void program();
int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    program();
}
 
 
// mod library
ll MOD=1e9+7;
 
inline ll mod(ll x_) {
    return (x_)%MOD;
}
ll modpow(ll x_, ll N_) {
    if(N_ == 0) return 1;
    ll a = modpow(x_,N_/2);
    a = (a*a)%MOD;
    if(N_%2) a = (a*x_)%MOD;
    return a;
}
ll inv(ll x_) {
    return modpow(x_, MOD-2);
}
class mi {
public:
    mi(ll v=0) {value = v;}
    mi  operator+ (ll rs) {return mod(value+rs);}
    mi  operator- (ll rs) {return mod(value-rs+MOD);}
    mi  operator* (ll rs) {return mod(value*rs);}
    mi  operator/ (ll rs) {return mod(value*inv(rs));}
    mi& operator+=(ll rs) {*this = (*this)+rs; return *this;}
    mi& operator-=(ll rs) {*this = (*this)-rs; return *this;}
    mi& operator*=(ll rs) {*this = (*this)*rs; return *this;}
    mi& operator/=(ll rs) {*this = (*this)/rs; return *this;}
    operator ll&() {return value;}
 
    ll value;
};
typedef vector<mi> vmi;
 
//===================//
//   begin program   //
//===================//
 
const int MX = 5e5;
const int N = (1<<23);
 
// in and output
int n, m;
string s[MX], p[MX], q[MX];
int ans[MX];

// 2d problem
int x[MX], y[MX];
int bgx[MX], edx[MX], bgy[MX], edy[MX];

// fenwick tree
int FT[MX];
void addFT(int i, int value) {
    for(i++; i<MX; i+=i&-i) FT[i] += value;
}
int getFT(int i) {
    int ans = 0;
    for(i++; i; i-=i&-i) ans += FT[i];
    return ans;
}

typedef tuple<int,int,int> T;
 
void program() {
    // input
    IN(n,m);
    RE(i,n) IN(s[i]);
    RE(i,m) IN(p[i],q[i]);
 
    // will the coördinates
    RE(i,m) reverse(all(q[i]));
    RE(_,2) {
        vector<string> v;
        RE(i,n) v.pb(s[i]);
        RE(i,m) v.pb((_?q:p)[i]);
        sort(all(v));

        RE(i,n)
            (_?y:x)[i] = lower_bound(all(v),s[i]) - v.begin();
        
        RE(i,m) {
            (_?bgy:bgx)[i] = lower_bound(all(v),(_?q:p)[i]) - v.begin();
            (_?q:p)[i].back()++;
            (_?edy:edx)[i] = lower_bound(all(v),(_?q:p)[i]) - v.begin() - 1;
            (_?q:p)[i].back()--;
        }

        RE(i,n) reverse(all(s[i]));
    }

    // coördinate compression
    vi difx, dify;
    RE(i,n) difx.pb(x[i]), dify.pb(y[i]);
    RE(i,m) difx.pb(bgx[i]), difx.pb(edx[i]), dify.pb(bgy[i]), dify.pb(edy[i]);
    sort(all(difx)); sort(all(dify));
    RE(i,n) {
        x[i] = lower_bound(all(difx),x[i])-difx.begin();
        y[i] = lower_bound(all(dify),y[i])-dify.begin();
    }
    RE(i,m) {
        bgx[i] = lower_bound(all(difx),bgx[i])-difx.begin();
        edx[i] = lower_bound(all(difx),edx[i])-difx.begin();
        bgy[i] = lower_bound(all(dify),bgy[i])-dify.begin();
        edy[i] = lower_bound(all(dify),edy[i])-dify.begin();
    }

    // count points in rectangle
    priority_queue<T,vector<T>,greater<T>> pq;
    RE(i,m) pq.push({bgx[i],1,i});
    RE(i,n) pq.push({x  [i],2,i});
    RE(i,m) pq.push({edx[i],3,i});
    while(!pq.empty()) {
        T p = pq.top(); pq.pop();
        int a, t, b, i;
        tie(a,t,i) = p;
        if(t == 1) {
            ans[i] -= getFT(edy[i]) - getFT(bgy[i]-1);
        }
        if(t == 2) {
            addFT(y[i],1);
        }
        if(t == 3) {
            ans[i] += getFT(edy[i]) - getFT(bgy[i]-1);
        }
    }

    // output
    RE(i,m) OUTL(ans[i]);
}

Compilation message (stderr)

selling_rna.cpp: In function 'void program()':
selling_rna.cpp:170:19: warning: unused variable 'b' [-Wunused-variable]
  170 |         int a, t, b, i;
      |                   ^

• Subtask 1: 10 / 10
• Subtask 2: 25 / 25
• Subtask 3: 25 / 25
• Subtask 4: 40 / 40