oj.uz

Submission #95876

# Submission time Handle Problem Language Result Execution time Memory
95876 2019-02-03T10:02:18 Z easrui None (JOI14_ho_t5) C++14
10 / 100
 470 ms 263168 KB 
#include <bits/stdc++.h>
#define sz first
#define col second
using namespace std;
const int MN = 1e5+9;
typedef pair<int,int> pii;
struct line{
    int A,B,C,D;
    line(){};
    line(int a, int b, int c, int d){
        A = a, B = b , C = c, D = d;
    }
} L[MN];

struct event{
    int s,e,t,v;
    event(){};
    event(int a, int b, int c, int d){
        s = a, e = b, t = c, v = d;
    }
    bool operator < (const event &A) const{
        if(t==A.t){
            return A.v<v;
        }
        return t<A.t;
    }
} E[2*MN];

int W,H,N,A,B,C,D,par[MN],cnt,comp,nume;
long long inter;
bool ch[MN];
pii T[4*MN];
vector<int> X,Y;

int fnd(int a)
{
    return par[a]==a ? a : par[a] = fnd(par[a]);
}

void join(int a, int b)
{
    if(a==0 || b==0) return;
    a = fnd(a), b = fnd(b);
    if(a!=b) par[b] = a;
}

void upt(int x, int v, int s, int e, int pos)
{
    if(x<s || x>e) return;
    int c = T[pos].col;
    if(c){
        if(s!=e){
            if(T[2*pos].sz) join(T[2*pos].col,c);
            if(T[2*pos+1].sz) join(T[2*pos+1].col,c);
     		T[2*pos].col = c;
        	T[2*pos+1].col = c;
        }
        T[pos].col = 0;
    }
    if(s==e){
      	if(v==-1 && !c) comp++;
        T[pos].sz += v;
        return;
    }
    int m = (s+e)/2;
    upt(x,v,s,m,2*pos);
    upt(x,v,m+1,e,2*pos+1);
    T[pos].sz = T[2*pos].sz + T[2*pos+1].sz;
}

int sum(int l, int r, int s, int e, int pos)
{
    if(r<s || e<l) return 0;
    if(l<=s && e<=r) return T[pos].sz;
    int m = (s+e)/2;
    return sum(l,r,s,m,2*pos)+sum(l,r,m+1,e,2*pos+1);
}

void act(int l, int r, int s, int e, int pos)
{
    if(r<s || l>e) return;
    int c = T[pos].col;
    if(c){
        if(s!=e){
            if(T[2*pos].sz) join(T[2*pos].col,c);
            if(T[2*pos+1].sz) join(T[2*pos+1].col,c);
     		T[2*pos].col = c;
        	T[2*pos+1].col = c;
        	T[pos].col = 0;
        }
    }
    if(l<=s && e<=r){
        if(T[pos].sz) join(c,cnt);
        T[pos].col = cnt;
        return;
    }
    int m = (s+e)/2;
    act(l,r,s,m,2*pos);
    act(l,r,m+1,e,2*pos+1);
}

int main()
{
    //freopen("input.txt","r",stdin);
    cin >> W >> H >> N;
    for(int i=0; i<N; i++){
        cin >> A >> B >> C >> D;
        if(A>C) swap(A,C);
        if(B>D) swap(B,D);
        L[i] = line(A,B,C,D);
        X.push_back(A);
        X.push_back(C);
        Y.push_back(B);
        Y.push_back(D);
    }
    L[N] = line(0,0,0,H);
    L[N+1] = line(0,0,W,0);
    L[N+2] = line(0,H,W,H);
    L[N+3] = line(W,0,W,H);
    X.push_back(0);
    X.push_back(W);
    Y.push_back(0);
    Y.push_back(H);
    sort(X.begin(),X.end());
    sort(Y.begin(),Y.end());
    X.erase(unique(X.begin(),X.end()),X.end());
    Y.erase(unique(Y.begin(),Y.end()),Y.end());
    nume = N+4;
    for(int i=0; i<N+4; i++){
        L[i].A = lower_bound(X.begin(),X.end(),L[i].A)-X.begin();
        L[i].C = lower_bound(X.begin(),X.end(),L[i].C)-X.begin();
        L[i].B = lower_bound(Y.begin(),Y.end(),L[i].B)-Y.begin();
        L[i].D = lower_bound(Y.begin(),Y.end(),L[i].D)-Y.begin();
        if(L[i].C!=L[i].A){
            E[i] = event(L[i].B,L[i].D,L[i].A,1);
            E[nume++] = event(L[i].B,L[i].D,L[i].C,-1);
        } else E[i] = event(L[i].B,L[i].D,L[i].C,0);
    }
    sort(E,E+nume);
    for(int i=0; i<nume; i++){
        if(E[i].v) upt(E[i].s,E[i].v,0,Y.size()-1,1);
        else{
            cnt++;
            par[cnt] = cnt;
            act(E[i].s,E[i].e,0,Y.size()-1,1);
            inter += sum(E[i].s,E[i].e,0,Y.size()-1,1);
        }
    }
    for(int i=1; i<=cnt; i++) ch[fnd(i)] = true;
    for(int i=1; i<=cnt; i++) comp += ch[i];
    //cout << sizeof(L) << '\n';
    //cout << sizeof(T) << '\n';
    //cout << sizeof(L)+sizeof(T)+sizeof(par)+sizeof(ch)+sizeof(E)/*+sizeof(X)+sizeof(Y)*/ << '\n';
    cout << inter+comp-N-4;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 380 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 4 ms 376 KB Output is correct
9 Correct 4 ms 376 KB Output is correct
10 Correct 4 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 8 ms 376 KB Output is correct
13 Correct 4 ms 376 KB Output is correct
14 Correct 4 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 380 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 4 ms 376 KB Output is correct
9 Correct 4 ms 376 KB Output is correct
10 Correct 4 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 8 ms 376 KB Output is correct
13 Correct 4 ms 376 KB Output is correct
14 Correct 4 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 4 ms 376 KB Output is correct
22 Correct 4 ms 380 KB Output is correct
23 Correct 4 ms 376 KB Output is correct
24 Correct 4 ms 376 KB Output is correct
25 Correct 4 ms 376 KB Output is correct
26 Correct 4 ms 376 KB Output is correct
27 Correct 5 ms 376 KB Output is correct
28 Correct 4 ms 376 KB Output is correct

Subtask #3
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 376 KB Output is correct
2 Correct 3 ms 376 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 4 ms 376 KB Output is correct
5 Correct 31 ms 1272 KB Output is correct
6 Correct 163 ms 5488 KB Output is correct
7 Runtime error 470 ms 263168 KB Execution killed with signal 9 (could be triggered by violating memory limits)
8 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 4 ms 376 KB Output is correct
3 Correct 34 ms 1244 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 4 ms 504 KB Output is correct
6 Runtime error 292 ms 19168 KB Execution killed with signal 11 (could be triggered by violating memory limits)
7 Halted 0 ms 0 KB -

Subtask #5
0 / 50.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 376 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 380 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 4 ms 376 KB Output is correct
9 Correct 4 ms 376 KB Output is correct
10 Correct 4 ms 376 KB Output is correct
11 Correct 3 ms 376 KB Output is correct
12 Correct 8 ms 376 KB Output is correct
13 Correct 4 ms 376 KB Output is correct
14 Correct 4 ms 376 KB Output is correct
15 Correct 3 ms 376 KB Output is correct
16 Correct 2 ms 376 KB Output is correct
17 Correct 2 ms 376 KB Output is correct
18 Correct 2 ms 376 KB Output is correct
19 Correct 2 ms 376 KB Output is correct
20 Correct 2 ms 376 KB Output is correct
21 Correct 4 ms 376 KB Output is correct
22 Correct 4 ms 380 KB Output is correct
23 Correct 4 ms 376 KB Output is correct
24 Correct 4 ms 376 KB Output is correct
25 Correct 4 ms 376 KB Output is correct
26 Correct 4 ms 376 KB Output is correct
27 Correct 5 ms 376 KB Output is correct
28 Correct 4 ms 376 KB Output is correct
29 Correct 3 ms 376 KB Output is correct
30 Correct 3 ms 376 KB Output is correct
31 Correct 3 ms 376 KB Output is correct
32 Correct 4 ms 376 KB Output is correct
33 Correct 31 ms 1272 KB Output is correct
34 Correct 163 ms 5488 KB Output is correct
35 Runtime error 470 ms 263168 KB Execution killed with signal 9 (could be triggered by violating memory limits)
36 Halted 0 ms 0 KB -