oj.uz

Submission #412314

# Submission time Handle Problem Language Result Execution time Memory
412314 2021-05-26T17:17:25 Z Carmel_Ab1 Swapping Cities (APIO20_swap) C++17
37 / 100
 2000 ms 27776 KB 
#include<bits/stdc++.h>
#include "swap.h"

//#include "grader.cpp"

using namespace std;

typedef long double ld;
typedef long long ll;
typedef unsigned long long ull;
typedef vector<int>vi;
typedef vector<vector<int>>vvi;
typedef vector<ll>vl;
typedef vector<vl> vvl;
typedef pair<int,int>pi;
typedef pair<ll,ll> pl;
typedef vector<pl> vpl;
typedef vector<ld> vld;
typedef pair<ld,ld> pld;
//typedef tree<ll, null_type, less_equal<ll>,rb_tree_tag,tree_order_statistics_node_update> ordered_set;
template<typename T> ostream& operator<<(ostream& os, vector<T>& a){os<<"[";for(int i=0; i<ll(a.size()); i++){os << a[i] << ((i!=ll(a.size()-1)?" ":""));}os << "]\n"; return os;}

#define all(x) x.begin(),x.end()
#define YES out("YES")
#define NO out("NO")
#define out(x){cout << x << "\n"; return;}
#define GLHF ios_base::sync_with_stdio(false); cin.tie(NULL)
#define print(x){for(auto ait:x) cout << ait << " "; cout << "\n";}
#define pb push_back
#define umap unordered_map


struct dsu{
    vi par,deg;
    vector<bool>is_line;

    dsu (int n){
        par.resize(n);
        for(int i=0; i<n; i++)
            par[i]=i;
        deg.resize(n);
        is_line.resize(n,1);
    }
    int get(int x){return par[x]=(x==par[x]?x:get(par[x]));}

    void unite(int u,int v){
        bool ok=(deg[u]+1)>2 || (deg[v]+1)>2 || get(u)==get(v);
        deg[u]++,deg[v]++;
        if(rand()%2)swap(u,v);
        if(ok)
            is_line[get(u)]=is_line[get(v)]=0;
        if(!is_line[get(u)] || !is_line[get(v)])
            is_line[get(u)]=is_line[get(v)]=0;

        u=get(u),v=get(v);
        par[u]=v;
    }

};
vector<vector<pi>> g;
vector<bool>vis;
int mx=-1;

bool cyc=1,line=1,star=1;
vvi E;

void init(int n, int M,vi U,vi V,vi W){
    g.resize(n);
    vis.resize(n);
    mx=*max_element(all(W))+1;

    for(int i=0; i<M; i++){
        g[U[i]].pb({V[i],W[i]});
        g[V[i]].pb({U[i],W[i]});
        E.pb({W[i],min(U[i],V[i]),max(U[i],V[i])});
    }
    sort(all(E));
    for(int i=0; i<n; i++)
        cyc&=g[i].size()==2,line&=g[i].size()<=2;
    line&=!cyc;
    star&=g[0].size()==n-1 && M==n-1;
}

bool ans;
void dfs(int src,int par,int w){
    vis[src]=1;
    int cnt=0;
    for(pi nbr:g[src])
        if(nbr.second<=w)
            cnt++;
    if(cnt>2)
        ans=1;
    for(pi nbr:g[src]) {
        if(nbr.first==par || nbr.second>w)continue;
        if(vis[nbr.first])ans=1;
        else dfs(nbr.first,src,w);
    }
}

int getMinimumFuelCapacity(int X, int Y){
    
    ll l=1,r=mx,ans=-1;
    int n=g.size();
    dsu d(n);
    for(int i=0; i<E.size(); i++){
        d.unite(E[i][1],E[i][2]);
        if(d.get(X)==d.get(Y) && !d.is_line[d.get(X)])
            return E[i][0];
    }
    return -1;
}

Compilation message

swap.cpp: In function 'void init(int, int, vi, vi, vi)':
swap.cpp:81:22: warning: comparison of integer expressions of different signedness: 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   81 |     star&=g[0].size()==n-1 && M==n-1;
      |           ~~~~~~~~~~~^~~~~
swap.cpp: In function 'int getMinimumFuelCapacity(int, int)':
swap.cpp:105:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  105 |     for(int i=0; i<E.size(); i++){
      |                  ~^~~~~~~~~
swap.cpp:102:8: warning: unused variable 'l' [-Wunused-variable]
  102 |     ll l=1,r=mx,ans=-1;
      |        ^
swap.cpp:102:12: warning: unused variable 'r' [-Wunused-variable]
  102 |     ll l=1,r=mx,ans=-1;
      |            ^
swap.cpp:102:17: warning: unused variable 'ans' [-Wunused-variable]
  102 |     ll l=1,r=mx,ans=-1;
      |                 ^~~

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 2 ms 300 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 97 ms 13152 KB Output is correct
10 Correct 167 ms 14988 KB Output is correct
11 Correct 169 ms 14844 KB Output is correct
12 Correct 187 ms 15744 KB Output is correct
13 Correct 182 ms 15732 KB Output is correct
14 Execution timed out 2028 ms 13468 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Execution timed out 2068 ms 19256 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 2 ms 300 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 2 ms 432 KB Output is correct
11 Correct 2 ms 332 KB Output is correct
12 Correct 2 ms 316 KB Output is correct
13 Correct 2 ms 332 KB Output is correct
14 Correct 2 ms 332 KB Output is correct
15 Correct 2 ms 444 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 2 ms 332 KB Output is correct
18 Correct 3 ms 332 KB Output is correct
19 Correct 2 ms 332 KB Output is correct
20 Correct 2 ms 332 KB Output is correct
21 Correct 2 ms 460 KB Output is correct
22 Correct 2 ms 560 KB Output is correct
23 Correct 2 ms 332 KB Output is correct
24 Correct 4 ms 460 KB Output is correct
25 Correct 4 ms 460 KB Output is correct
26 Correct 4 ms 460 KB Output is correct
27 Correct 2 ms 332 KB Output is correct
28 Correct 4 ms 460 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 2 ms 300 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 2 ms 332 KB Output is correct
10 Correct 97 ms 13152 KB Output is correct
11 Correct 167 ms 14988 KB Output is correct
12 Correct 169 ms 14844 KB Output is correct
13 Correct 187 ms 15744 KB Output is correct
14 Correct 182 ms 15732 KB Output is correct
15 Correct 2 ms 432 KB Output is correct
16 Correct 2 ms 332 KB Output is correct
17 Correct 2 ms 316 KB Output is correct
18 Correct 2 ms 332 KB Output is correct
19 Correct 2 ms 332 KB Output is correct
20 Correct 2 ms 444 KB Output is correct
21 Correct 2 ms 332 KB Output is correct
22 Correct 2 ms 332 KB Output is correct
23 Correct 3 ms 332 KB Output is correct
24 Correct 2 ms 332 KB Output is correct
25 Correct 2 ms 332 KB Output is correct
26 Correct 2 ms 460 KB Output is correct
27 Correct 2 ms 560 KB Output is correct
28 Correct 2 ms 332 KB Output is correct
29 Correct 4 ms 460 KB Output is correct
30 Correct 4 ms 460 KB Output is correct
31 Correct 4 ms 460 KB Output is correct
32 Correct 2 ms 332 KB Output is correct
33 Correct 4 ms 460 KB Output is correct
34 Correct 12 ms 2340 KB Output is correct
35 Correct 195 ms 15348 KB Output is correct
36 Correct 184 ms 15436 KB Output is correct
37 Correct 202 ms 15460 KB Output is correct
38 Correct 178 ms 15208 KB Output is correct
39 Correct 162 ms 15204 KB Output is correct
40 Correct 140 ms 14072 KB Output is correct
41 Correct 195 ms 15836 KB Output is correct
42 Correct 147 ms 15348 KB Output is correct
43 Correct 188 ms 15320 KB Output is correct
44 Correct 212 ms 16212 KB Output is correct
45 Correct 285 ms 22752 KB Output is correct
46 Correct 197 ms 15320 KB Output is correct
47 Correct 226 ms 15448 KB Output is correct
48 Correct 203 ms 16760 KB Output is correct
49 Correct 147 ms 20096 KB Output is correct
50 Correct 121 ms 15248 KB Output is correct
51 Correct 224 ms 18056 KB Output is correct
52 Correct 301 ms 24128 KB Output is correct
53 Correct 289 ms 25444 KB Output is correct
54 Correct 364 ms 27776 KB Output is correct
55 Correct 149 ms 15452 KB Output is correct
56 Correct 337 ms 24608 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 2 ms 300 KB Output is correct
5 Correct 2 ms 332 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 97 ms 13152 KB Output is correct
10 Correct 167 ms 14988 KB Output is correct
11 Correct 169 ms 14844 KB Output is correct
12 Correct 187 ms 15744 KB Output is correct
13 Correct 182 ms 15732 KB Output is correct
14 Execution timed out 2028 ms 13468 KB Time limit exceeded
15 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 2 ms 300 KB Output is correct
6 Correct 2 ms 332 KB Output is correct
7 Correct 2 ms 332 KB Output is correct
8 Correct 2 ms 332 KB Output is correct
9 Correct 2 ms 332 KB Output is correct
10 Correct 97 ms 13152 KB Output is correct
11 Correct 167 ms 14988 KB Output is correct
12 Correct 169 ms 14844 KB Output is correct
13 Correct 187 ms 15744 KB Output is correct
14 Correct 182 ms 15732 KB Output is correct
15 Execution timed out 2028 ms 13468 KB Time limit exceeded
16 Halted 0 ms 0 KB -