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Submission #825990

# Submission time Handle Problem Language Result Execution time Memory
825990 2023-08-15T09:45:07 Z AlphaMale06 Monthly railway pass (LMIO18_menesinis_bilietas) C++14
75 / 100
 292 ms 262144 KB 
#include <bits/stdc++.h>

using namespace std;

#define F first
#define S second
#define mp make_pair
#define pb push_back

const int N = 5000005;
int p[N];
int sz[N];
//set<int> reps;
set<int> adj[N];
vector<pair<int, int>> paid;

void make(int v){p[v]=v; sz[v]=1;}

int rep(int v){
    if(p[v]==v)return v;
    return p[v]=rep(p[v]);
}

void unite(int v, int u){
    v=rep(v);
    u=rep(u);
    if(u==v)return;
    if(sz[u]>sz[v]){
        swap(u, v);
    }
    p[u]=v;
    sz[v]+=sz[u];
    //reps.erase(reps.find(u));
}



int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n, m;
    cin >> n >> m;
    for(int i=1; i<=n; i++){
        make(i);
       // reps.insert(i);
    }
    for(int i=0; i< m; i++){
        int x, y;
        char a;
        cin >> x >> y >> a;
        if(a=='T'){
            unite(x, y);
        }
        else paid.pb(mp(x, y));
    }
    for(int i=0; i< paid.size(); i++){
        int x=paid[i].F;
        int y=paid[i].S;
        x=rep(x);
        y=rep(y);
        if(x==y)continue;
        adj[x].insert(y);
        adj[y].insert(x);
    }
    int ans=0;
    int cnt=0;
    for(int i=1; i<=n; i++){
        if(p[i]==i)cnt++;
    }
    for(int i=1; i<=n; i++){
        if(p[i]==i){
            if(adj[i].size()==cnt-1)ans+=sz[i];
        }
    }
    //for(auto it = reps.begin(); it!=reps.end(); it++){
    //    int node=*it;
    //    if(adj[node].size()==reps.size()-1){
    //        ans+=sz[node];
   //     }
    //}
    cout << ans << '\n';
}

Compilation message

menesinis_bilietas.cpp: In function 'int main()':
menesinis_bilietas.cpp:57:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   57 |     for(int i=0; i< paid.size(); i++){
      |                  ~^~~~~~~~~~~~~
menesinis_bilietas.cpp:73:29: warning: comparison of integer expressions of different signedness: 'std::set<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   73 |             if(adj[i].size()==cnt-1)ans+=sz[i];
      |                ~~~~~~~~~~~~~^~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 167 ms 238504 KB Output is correct
2 Correct 97 ms 235224 KB Output is correct
3 Correct 93 ms 235160 KB Output is correct
4 Correct 100 ms 238832 KB Output is correct
5 Correct 108 ms 235148 KB Output is correct
6 Correct 119 ms 236164 KB Output is correct

Subtask #2
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 238832 KB Output is correct
2 Correct 108 ms 235148 KB Output is correct
3 Correct 99 ms 235272 KB Output is correct
4 Correct 94 ms 235204 KB Output is correct
5 Correct 107 ms 235952 KB Output is correct
6 Runtime error 292 ms 262144 KB Execution killed with signal 9
7 Halted 0 ms 0 KB -

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 97 ms 235224 KB Output is correct
2 Correct 93 ms 235160 KB Output is correct
3 Correct 99 ms 235272 KB Output is correct
4 Correct 94 ms 235204 KB Output is correct
5 Correct 107 ms 235952 KB Output is correct
6 Correct 117 ms 235128 KB Output is correct
7 Correct 97 ms 235164 KB Output is correct
8 Correct 97 ms 235224 KB Output is correct
9 Correct 98 ms 235192 KB Output is correct
10 Correct 104 ms 235384 KB Output is correct
11 Correct 98 ms 235372 KB Output is correct
12 Correct 96 ms 235200 KB Output is correct
13 Correct 99 ms 235192 KB Output is correct
14 Correct 108 ms 235544 KB Output is correct
15 Correct 98 ms 235056 KB Output is correct
16 Correct 98 ms 235112 KB Output is correct
17 Correct 96 ms 235104 KB Output is correct
18 Correct 99 ms 235256 KB Output is correct
19 Correct 100 ms 235108 KB Output is correct
20 Correct 100 ms 235208 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 117 ms 235128 KB Output is correct
2 Correct 97 ms 235164 KB Output is correct
3 Correct 97 ms 235224 KB Output is correct
4 Correct 98 ms 235192 KB Output is correct
5 Correct 104 ms 235384 KB Output is correct
6 Correct 98 ms 235372 KB Output is correct
7 Correct 96 ms 235200 KB Output is correct
8 Correct 99 ms 235192 KB Output is correct
9 Correct 108 ms 235544 KB Output is correct
10 Correct 98 ms 235056 KB Output is correct
11 Correct 98 ms 235112 KB Output is correct
12 Correct 96 ms 235104 KB Output is correct
13 Correct 99 ms 235256 KB Output is correct
14 Correct 100 ms 235108 KB Output is correct
15 Correct 100 ms 235208 KB Output is correct
16 Correct 97 ms 235224 KB Output is correct
17 Correct 93 ms 235160 KB Output is correct
18 Correct 99 ms 235272 KB Output is correct
19 Correct 94 ms 235204 KB Output is correct
20 Correct 107 ms 235952 KB Output is correct
21 Correct 108 ms 235148 KB Output is correct
22 Correct 119 ms 236164 KB Output is correct
23 Correct 104 ms 235856 KB Output is correct
24 Correct 181 ms 240776 KB Output is correct
25 Correct 136 ms 238584 KB Output is correct
26 Correct 209 ms 249356 KB Output is correct
27 Correct 125 ms 237768 KB Output is correct
28 Correct 176 ms 247104 KB Output is correct
29 Correct 105 ms 236912 KB Output is correct
30 Correct 119 ms 238516 KB Output is correct

Subtask #5
0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 117 ms 235128 KB Output is correct
2 Correct 97 ms 235164 KB Output is correct
3 Correct 97 ms 235224 KB Output is correct
4 Correct 98 ms 235192 KB Output is correct
5 Correct 104 ms 235384 KB Output is correct
6 Correct 98 ms 235372 KB Output is correct
7 Correct 96 ms 235200 KB Output is correct
8 Correct 99 ms 235192 KB Output is correct
9 Correct 108 ms 235544 KB Output is correct
10 Correct 98 ms 235056 KB Output is correct
11 Correct 98 ms 235112 KB Output is correct
12 Correct 96 ms 235104 KB Output is correct
13 Correct 99 ms 235256 KB Output is correct
14 Correct 100 ms 235108 KB Output is correct
15 Correct 100 ms 235208 KB Output is correct
16 Correct 104 ms 235856 KB Output is correct
17 Correct 181 ms 240776 KB Output is correct
18 Correct 136 ms 238584 KB Output is correct
19 Correct 209 ms 249356 KB Output is correct
20 Correct 125 ms 237768 KB Output is correct
21 Correct 176 ms 247104 KB Output is correct
22 Correct 167 ms 238504 KB Output is correct
23 Correct 97 ms 235224 KB Output is correct
24 Correct 93 ms 235160 KB Output is correct
25 Correct 100 ms 238832 KB Output is correct
26 Correct 99 ms 235272 KB Output is correct
27 Correct 94 ms 235204 KB Output is correct
28 Correct 107 ms 235952 KB Output is correct
29 Correct 108 ms 235148 KB Output is correct
30 Runtime error 292 ms 262144 KB Execution killed with signal 9
31 Halted 0 ms 0 KB -