oj.uz

Submission #829897

# Submission time Handle Problem Language Result Execution time Memory
829897 2023-08-18T15:39:32 Z tolbi Duathlon (APIO18_duathlon) C++17
23 / 100
 1000 ms 36600 KB 
#pragma optimize("Bismillahirrahmanirrahim")
//█▀█─█──█──█▀█─█─█
//█▄█─█──█──█▄█─█■█
//█─█─█▄─█▄─█─█─█─█
//Allahuekber
//ahmet23 orz...
//FatihSultanMehmedHan
//YavuzSultanSelimHan
//AbdulhamidHan
//Sani buyuk Osman Pasa Plevneden cikmam diyor
#define author tolbi
#include <bits/stdc++.h>
using namespace std;
#define deci(x) int x;cin>>x;
#define decstr(x) string x;cin>>x;
#define sortarr(x) sort(x.begin(), x.end())
#define sortrarr(x) sort(x.rbegin(), x.rend())
#define rev(x) reverse(x.begin(), x.end())
#define cinarr(x) for (auto &it : x) cin>>it;
#define coutarr(x) for (auto &it : x) cout<<it<<" ";cout<<endl;
#define tol(bi) (1LL<<((int)(bi)))
#define endl '\n'
typedef long long ll;
#define int long long
mt19937 ayahya(chrono::high_resolution_clock().now().time_since_epoch().count());
ll solve(int n, vector<int> u, vector<int> v){
    int totn = n;
    vector<vector<int>> arr(n);
    for (int i = 0; i < u.size(); i++){
        arr[u[i]].push_back(v[i]);
        arr[v[i]].push_back(u[i]);
    }
    vector<int> dept(n,-1);
    vector<int> ele(n);
    vector<int> sz;
    vector<vector<int>> hehe;
    function<int(int,int)> f;
    function<pair<int,vector<int>>(int,int)> f2;
    vector<int> par(n);
    f2 = [&](int node, int lnode)->pair<int,vector<int>>{
        vector<int> stk;
        if (lnode!=-1) par[node]=lnode;
        if (lnode!=-1) dept[node]=dept[lnode]+1;
        int mide = dept[node];
        stk.push_back(node);
        for (int i = 0; i < arr[node].size(); i++){
            if (arr[node][i]==lnode) continue;
            if (dept[arr[node][i]]!=-1){
                mide=min(mide,dept[arr[node][i]]);
                continue;
            }
            pair<int,vector<int>> hueh = f2(arr[node][i],node);
            mide=min(mide,hueh.first);
            while (hueh.second.size()){
                stk.push_back(hueh.second.back());
                hueh.second.pop_back();
            }
        }
        if (mide>=dept[node]){
            sz.push_back(0);
            while (stk.size()){
                ele[stk.back()]=hehe.size();
                stk.pop_back();
                sz.back()++;
            }
            hehe.push_back(vector<int>());
        }
        return {mide,stk};
    };
    dept[0]=0;
    f2(0,-1);
    for (int i = 1; i < n; i++){
        if (ele[i]!=ele[par[i]]){
            hehe[ele[i]].push_back(ele[par[i]]);
            hehe[ele[par[i]]].push_back(ele[i]);
        }
    }
    n=hehe.size();
    dept[0]=0;
    swap(arr,hehe);
    ll ans = 0;
    for (int i = 0; i < sz.size(); i++){
        ans+=(ll)sz[i]*((ll)sz[i]-1)*((ll)sz[i]-2);
    }//3 from cycle
    vector<int> subsz(n);
    //coutarr(sz);
    f = [&](int node, int lnode)->int{
        subsz[node]=sz[node];
        for (int i = 0; i < arr[node].size(); i++){
            if (arr[node][i]==lnode) continue;
            f(arr[node][i],node);
            subsz[node]+=subsz[arr[node][i]];
            ans+=((ll)subsz[arr[node][i]])*((ll)sz[node])*((ll)totn-subsz[arr[node][i]]-sz[node]);
            //2 from outside, 1 from cycle
            ans+=(ll)(sz[node]-1)*((ll)sz[node]-1)*(ll)subsz[arr[node][i]]*2LL;
            //2 from cycle, 1 from outside
        }
        ans+=(ll)(sz[node]-1)*((ll)sz[node]-1)*((ll)totn-subsz[node])*2LL;
        ans+=(ll)(sz[node])*((ll)totn-subsz[node])*((ll)subsz[node]-(ll)sz[node]);
        return 23;
    };
    f(0,-1);
    return ans;
}
int32_t main(){
	int T = 1;
	int tno = 0;
	while (T-(tno++)){
        deci(n);deci(m);
        vector<int> par(n);
        iota(par.begin(), par.end(), 0);
        function<int(int)> find;
        find = [&](int node)->int{
        	if (par[node]==node) return node;
        	return par[node]=find(par[node]);
        };
        vector<pair<int,int>> edges(m);
        for (int i = 0; i < m; i++){
        	cin>>edges[i].first>>edges[i].second;
        	edges[i].first--,edges[i].second--;
        	int u = edges[i].first;
        	int v = edges[i].second;
        	u=find(u);
        	v=find(v);
            if (ayahya()%2) swap(u,v);
            par[u]=v;
        }
        map<int,int> mp;
        map<int,vector<int>> u;
        map<int,vector<int>> v;
        vector<int> indis(n);
        for (int i = 0; i < n; i++){
        	indis[i]=mp[find(i)]++;
        }
        for (int i = 0; i < m; i++){
        	u[find(edges[i].first)].push_back(indis[edges[i].first]);
        	v[find(edges[i].first)].push_back(indis[edges[i].second]);
        }
        ll ans = 0;
        for (auto it : mp){
        	ans+=solve(it.second,u[it.first],v[it.first]);
            u.erase(it.first);
            v.erase(it.first);
        }
        cout<<ans<<endl;
    }
}

Compilation message

count_triplets.cpp:1: warning: ignoring '#pragma optimize ' [-Wunknown-pragmas]
    1 | #pragma optimize("Bismillahirrahmanirrahim")
      | 
count_triplets.cpp: In function 'll solve(long long int, std::vector<long long int>, std::vector<long long int>)':
count_triplets.cpp:29:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |     for (int i = 0; i < u.size(); i++){
      |                     ~~^~~~~~~~~~
count_triplets.cpp: In lambda function:
count_triplets.cpp:46:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         for (int i = 0; i < arr[node].size(); i++){
      |                         ~~^~~~~~~~~~~~~~~~~~
count_triplets.cpp: In function 'll solve(long long int, std::vector<long long int>, std::vector<long long int>)':
count_triplets.cpp:82:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   82 |     for (int i = 0; i < sz.size(); i++){
      |                     ~~^~~~~~~~~~~
count_triplets.cpp: In lambda function:
count_triplets.cpp:89:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   89 |         for (int i = 0; i < arr[node].size(); i++){
      |                         ~~^~~~~~~~~~~~~~~~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Incorrect 0 ms 212 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #2
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Incorrect 0 ms 212 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #3
0 / 8.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1079 ms 36600 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 2 ms 468 KB Output is correct
4 Correct 1 ms 596 KB Output is correct
5 Correct 1 ms 596 KB Output is correct
6 Correct 1 ms 596 KB Output is correct
7 Correct 1 ms 596 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 2 ms 468 KB Output is correct
10 Correct 2 ms 468 KB Output is correct
11 Correct 1 ms 468 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 2 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 468 KB Output is correct
18 Correct 1 ms 468 KB Output is correct
19 Correct 1 ms 468 KB Output is correct
20 Correct 1 ms 468 KB Output is correct

Subtask #5
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 22600 KB Output is correct
2 Correct 112 ms 22624 KB Output is correct
3 Correct 109 ms 22588 KB Output is correct
4 Correct 118 ms 22584 KB Output is correct
5 Correct 101 ms 22676 KB Output is correct
6 Correct 130 ms 35504 KB Output is correct
7 Correct 144 ms 29124 KB Output is correct
8 Correct 106 ms 27448 KB Output is correct
9 Correct 143 ms 25720 KB Output is correct
10 Correct 113 ms 15028 KB Output is correct
11 Correct 130 ms 20392 KB Output is correct
12 Correct 87 ms 9716 KB Output is correct
13 Correct 101 ms 8748 KB Output is correct
14 Correct 109 ms 7724 KB Output is correct
15 Correct 111 ms 9184 KB Output is correct
16 Correct 109 ms 11548 KB Output is correct
17 Correct 92 ms 24388 KB Output is correct
18 Correct 79 ms 23636 KB Output is correct
19 Correct 94 ms 24368 KB Output is correct
20 Correct 90 ms 23356 KB Output is correct

Subtask #6
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Incorrect 1 ms 468 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #7
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 22584 KB Output is correct
2 Correct 98 ms 22340 KB Output is correct
3 Incorrect 123 ms 20896 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #8
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Incorrect 0 ms 212 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #9
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Incorrect 0 ms 212 KB Output isn't correct
8 Halted 0 ms 0 KB -