oj.uz

Submission #95883

# Submission time Handle Problem Language Result Execution time Memory
95883 2019-02-03T10:14:46 Z easrui None (JOI14_ho_t5) C++14
10 / 100
 364 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 act(int l, int r, int s, int e, int pos)
{
    if(r<s || l>e) return 0;
    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 T[pos].sz;
    }
    int m = (s+e)/2;
    return act(l,r,s,m,2*pos)+act(l,r,m+1,e,2*pos+1);
}

int main()
{
    ios_base::sync_with_stdio(0),cin.tie(0);
    //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;
            inter += act(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 << 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 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 4 ms 504 KB Output is correct
14 Correct 3 ms 504 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 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 4 ms 504 KB Output is correct
14 Correct 3 ms 504 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 3 ms 508 KB Output is correct
22 Correct 3 ms 504 KB Output is correct
23 Correct 3 ms 504 KB Output is correct
24 Correct 4 ms 504 KB Output is correct
25 Correct 4 ms 504 KB Output is correct
26 Correct 4 ms 504 KB Output is correct
27 Correct 4 ms 504 KB Output is correct
28 Correct 4 ms 504 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 508 KB Output is correct
3 Correct 3 ms 376 KB Output is correct
4 Correct 4 ms 504 KB Output is correct
5 Correct 19 ms 1528 KB Output is correct
6 Correct 98 ms 5740 KB Output is correct
7 Runtime error 364 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 3 ms 504 KB Output is correct
3 Correct 20 ms 1272 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 3 ms 504 KB Output is correct
6 Runtime error 275 ms 19268 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 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 3 ms 376 KB Output is correct
9 Correct 3 ms 504 KB Output is correct
10 Correct 3 ms 504 KB Output is correct
11 Correct 3 ms 504 KB Output is correct
12 Correct 2 ms 376 KB Output is correct
13 Correct 4 ms 504 KB Output is correct
14 Correct 3 ms 504 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 3 ms 508 KB Output is correct
22 Correct 3 ms 504 KB Output is correct
23 Correct 3 ms 504 KB Output is correct
24 Correct 4 ms 504 KB Output is correct
25 Correct 4 ms 504 KB Output is correct
26 Correct 4 ms 504 KB Output is correct
27 Correct 4 ms 504 KB Output is correct
28 Correct 4 ms 504 KB Output is correct
29 Correct 3 ms 376 KB Output is correct
30 Correct 3 ms 508 KB Output is correct
31 Correct 3 ms 376 KB Output is correct
32 Correct 4 ms 504 KB Output is correct
33 Correct 19 ms 1528 KB Output is correct
34 Correct 98 ms 5740 KB Output is correct
35 Runtime error 364 ms 263168 KB Execution killed with signal 9 (could be triggered by violating memory limits)
36 Halted 0 ms 0 KB -