oj.uz

Submission #1110604

# Submission time Handle Problem Language Result Execution time Memory
1110604 2024-11-10T04:48:14 Z vjudge1 Traffic (CEOI11_tra) C++17
100 / 100
 978 ms 69716 KB 
#include "bits/stdc++.h"
#define ll long long
using namespace std;
const int N=5e5+1,mod=1e9+7;
vector<int>l,r;
vector<vector<int>>v(N),rev(N);
int n,m,A,B;
int x[N],y[N];
bool vis[N],removed[N];
void dfs(int idx){
    vis[idx]=1;
    for(auto i:v[idx])
        if(!vis[i] && !removed[i])
            dfs(i);
    
}
void del(int idx){
    vis[idx]=1;
    for(auto i:v[idx])
        if(!vis[i])
            del(i);
}
void delr(int idx){
    vis[idx]=1;
    for(auto i:rev[idx])
        if(!vis[i])
            delr(i);
}
int mx[N],mn[N];
int main(){
    cin>>n>>m>>A>>B;
    for(int i=1;i<=n;i++){
        cin>>x[i]>>y[i];
        if(x[i]==0)
            l.push_back(i);
        if(x[i]==A)
            r.push_back(i);
    }
    sort(l.begin(),l.end(),[](int i, int j){
       return y[i] < y[j]; 
    });
    sort(r.begin(),r.end(),[](int i, int j){
       return y[i] < y[j]; 
    });
    //reverse(l.begin(),l.end());
    while(m--){
        int d,c,k;
        cin>>c>>d>>k;
        v[c].push_back(d);
        rev[d].push_back(c);
        if(k==2){
            v[d].push_back(c);
            rev[c].push_back(d);
        }
    }
    vector<int>r1;
    for(auto i:l)
        del(i);
    for(int i=1;i<=n;i++)
        if(!vis[i])
            removed[i]=1;

    memset(vis,0,sizeof vis);
    for(auto i:r)
        delr(i);
    for(int i=1;i<=n;i++)
        if(!vis[i])
            removed[i]=1;
    for(int i=0;i<r.size();i++)
        if(!removed[r[i]])
            r1.push_back(r[i]);
    int szl=l.size(),szr1=r1.size();
    memset(vis,0,sizeof vis);
    int idx=0;
    for(int i=0;i<szl;i++){
        if(removed[l[i]])continue;
        dfs(l[i]);
        while(idx+1<szr1 && vis[r1[idx+1]])
            idx++;
        mx[i]=idx;
    }
    memset(vis,0,sizeof vis);
    idx=szr1-1;
    for(int i=szl-1;i>=0;i--){
        if(removed[l[i]])continue;
        dfs(l[i]);
        while(idx-1>=0 && vis[r1[idx-1]])
            idx--;
        mn[i]=idx;
    }
    vector<int>ans;
    for(int i=0;i<szl;i++){
        if(removed[l[i]]) ans.push_back(0);
        else ans.push_back(mx[i]-mn[i]+1);
    }
    reverse(ans.begin(),ans.end());
    for(auto i:ans)cout<<i<<'\n';
    return 0;
}

Compilation message

tra.cpp: In function 'int main()':
tra.cpp:69:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   69 |     for(int i=0;i<r.size();i++)
      |                 ~^~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 32080 KB Output is correct
2 Correct 7 ms 32080 KB Output is correct
3 Correct 7 ms 32080 KB Output is correct
4 Correct 7 ms 31944 KB Output is correct
5 Correct 9 ms 30032 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 27984 KB Output is correct
2 Correct 8 ms 32080 KB Output is correct
3 Correct 7 ms 32080 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 32080 KB Output is correct
2 Correct 8 ms 32176 KB Output is correct
3 Correct 8 ms 32092 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 32080 KB Output is correct
2 Correct 12 ms 30344 KB Output is correct
3 Correct 12 ms 32336 KB Output is correct

Subtask #5
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 28 ms 30588 KB Output is correct
2 Correct 67 ms 35668 KB Output is correct
3 Correct 37 ms 29516 KB Output is correct

Subtask #6
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 59 ms 26952 KB Output is correct
2 Correct 112 ms 32720 KB Output is correct
3 Correct 65 ms 29464 KB Output is correct

Subtask #7
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 122 ms 29000 KB Output is correct
2 Correct 141 ms 33448 KB Output is correct
3 Correct 215 ms 31828 KB Output is correct

Subtask #8
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 144 ms 37704 KB Output is correct
2 Correct 149 ms 39496 KB Output is correct
3 Correct 189 ms 38984 KB Output is correct

Subtask #9
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 221 ms 40072 KB Output is correct
2 Correct 263 ms 42196 KB Output is correct
3 Correct 370 ms 40008 KB Output is correct

Subtask #10
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 435 ms 40644 KB Output is correct
2 Correct 544 ms 48660 KB Output is correct
3 Correct 435 ms 45700 KB Output is correct

Subtask #11
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 811 ms 58440 KB Output is correct
2 Correct 528 ms 54308 KB Output is correct
3 Correct 907 ms 52688 KB Output is correct

Subtask #12
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 280 ms 38180 KB Output is correct
2 Correct 544 ms 62292 KB Output is correct
3 Correct 636 ms 50284 KB Output is correct
4 Correct 978 ms 69716 KB Output is correct