oj.uz

Submission #980338

# Submission time Handle Problem Language Result Execution time Memory
980338 2024-05-12T05:20:21 Z hasan2006 Swapping Cities (APIO20_swap) C++17
36 / 100
 427 ms 128480 KB 
#include "swap.h"
#include <bits/stdc++.h>

using namespace std;

#define TL ios::sync_with_stdio(0),cin.tie(0),cout.tie(0);
#define rall(s) s.rbegin(),s.rend()
#define all(s) s.begin(),s.end()
#define pb push_back
#define se second
#define fi first
#define ll long long
#define ld long double
#define YES cout<<"YES\n"
#define Yes cout<<"Yes\n"
#define yes cout<<"yes\n"
#define NO cout<<"NO\n"
#define No cout<<"No\n"
#define no cout<<"no\n"


const int N =2e5 + 9 , mod = 1e9 + 7;
ll  p[N], sz[N] , a[N] , b[N] , dp[N] ,  dp1[N] ,  c[N][25] , d[N] , par[N][25] , mx[N][25] , us[N] , us1[N];
vector<pair<ll,ll>>v[N] , v1[N] , vc[N] ,  vv[N];
int get(int x){
    return (p[x] == x ? x : get(p[x]));
}
void join(int X , int Y , ll k){
    int x = get(X) , y = get(Y);
    if(x != y){
        if(sz[x] < sz[y])
            swap(x , y);
        p[y] = x;
        sz[x] += sz[y];
        vv[X].pb({k , Y});
        vv[Y].pb({k , X});
    }else {
        v1[X].pb({k , Y});
        v1[Y].pb({k , X});
    }
}
ll timer = 0;

void dd(int n  ,int p = 0 , int k = 0){
    if(p)
        v[p].pb({k , n});
    for(auto to : vv[n])
        if(to.se != p)
            dd(to.se , n , to.fi);
}

void dfs(int n , int p = 0 , ll k = 0){
    par[n][0] = p;
    if(v[p].size())
        c[n][0] = v[p][0].fi;
    else
        c[n][0] = 1e18;
    if(v[p].size() && v[p][0].se == n){
        if(v[p].size() > 1)
            c[n][0] = v[p][1].fi;
        else
            c[n][0] = 1e18;
    }
    if(v1[p].size())
        c[n][0] = min(c[n][0] , v1[p][0].fi);
    if(v1[n].size())
        c[n][0] = min(c[n][0] , v1[n][0].fi);
    mx[n][0] = k;
    us[n] = ++timer;
    for(int i = 1; i <= 20; i++){
        par[n][i] = par[par[n][i - 1]][i - 1] ;
        mx[n][i] = max(mx[n][i - 1] , mx[par[n][i - 1]][i - 1]);
        c[n][i] = min(c[n][i - 1] , c[par[n][i - 1]][i - 1]);
    }
    for(auto to : v[n])
        dfs(to.se , n , to.fi);
    if(v1[n].size())
        dp[n] = min(dp[n] , v1[n][0].fi);
    if(v[n].size() > 1)
        dp[n] = min(dp[n] , v[n][1].fi);
    dp[p] = min(dp[p] , max(k , dp[n]));
    us1[n] = ++timer;
}
void dfs1(int n , int p = 0 , ll k = 1e18 , ll ans = 1e18){
    if(v1[n].size())
        ans = min(ans , v1[n][0].fi);
    dp1[n] = ans;
    v[n].pb({k , p});
    for(auto to : v[n])
        if(to.se != p)
            vc[n].pb({max(to.fi , dp[to.se]) , to.se});
    sort(all(v[n]));
    sort(all(vc[n]));
    for(auto to : v[n]){
        if(to.se != p){
            ll ans1 = ans;
            if(v[n].size() >= 3){
                if(v[n][1].se == to.se || v[n][0].se == to.se)
                    ans1 = min(ans1, v[n][2].fi);
                else
                    ans1 = min(ans1 , v[n][1].fi);
            }
            if(vc[n][0].se != to.se)
                ans1 = min(ans1 ,vc[n][0].fi);
            else if(vc[n].size() > 1)
                ans1 = min(ans1 , vc[n][1].fi);
            dfs1(to.se , n , to.fi , max(ans1 , to.fi));
        }
    }
}

bool ok(int u, int v)
{
    return (u == 0 || (us[u] <= us[v] && us1[u] >= us1[v]));
}

ll get(int x , int y){
    ll mn = 1e18 , ans = 0;
    mn = min({mn , dp[y]});
    for(int i = 20; i >= 0; i--){
        if(!ok(par[y][i] , x)){
            mn = min(mn , c[y][i]);
            ans = max(ans , mx[y][i]);
            y = par[y][i];
        }
    }
    ans = max(ans , mx[y][0]);
    mn = min({mn , dp1[y]});
    ans = max(ans , mn);
    if(ans > 1e9)
        ans = -1;
    return ans;
}
ll mm = 0;
ll lca(int x , int y){

    if(ok(x , y)){
        return get(x , y);
    }
    if(ok(y , x))
        return get(y , x);
    ll mn = 1e18 , ans = 0;
    mn = min({mn , dp[x] , dp[y]});
    for(int i = 20; i >= 0; i--){
        if(!ok(par[y][i] , x)){
                mn = min(mn , c[y][i]);
                ans = max(ans , mx[y][i]);
                y = par[y][i];
            }
        }
    for(int i = 20; i >= 0; i--){
            if(!ok(par[x][i] , y)){
                mn = min(mn , c[x][i]);
                ans = max(ans , mx[x][i]);
                x = par[x][i];
            }
    }
    ans = max(ans , mx[x][0]);
    ans = max(ans , mx[y][0]);
    for(int i = 0; i < 3 && i < v[par[x][0]].size(); i++)
        if(v[par[x][0]][i].se != x && v[par[x][0]][i].se != y)
            mn = min(mn ,v[par[x][0]][i].fi);
    x = par[x][0];
    if(v1[x].size())
        mn = min(mn , v1[x][0].fi);
    ans = max(ans , mn);
    if(ans > 1e9)
        ans = -1;
    return ans;
}

void init(int n , int m , vector<int>v , vector<int>u , vector<int>c)
{
    vector<pair<ll,pair<ll,ll>>>vc;
    for(int i = 0; i <= n; i++)
        dp[i] = 1e18 , p[i] =  i , sz[i] = 1;
    for(int i = 0; i < m; i++)
        vc.pb({c[i] , {v[i] + 1, u[i] + 1}});
    sort(all(vc));
    for(auto to : vc)
        join(to.se.fi , to.se.se , to.fi);
    dd(1);
   for(int i = 1; i <= n ; i++)
        sort(all(::v[i])) , sort(rall(::v1[i]));
    dfs(1);
    dfs1(1);
}


int getMinimumFuelCapacity(int l, int r) {
        l++ , r++;
        return lca(l , r);
}
/*
int main(){

    init(4, 4, {0, 0, 1 , 2}, {1 , 3 , 2 , 3}, {1 , 3 , 2 , 4});
    cout<<getMinimumFuelCapacity(0,1)<<"\n";
    cout<<getMinimumFuelCapacity(0,2)<<"\n";
    cout<<getMinimumFuelCapacity(0,3)<<"\n";
    cout<<getMinimumFuelCapacity(1,2)<<"\n";
    cout<<getMinimumFuelCapacity(1,3)<<"\n";
    cout<<getMinimumFuelCapacity(2,3)<<"\n";
}*/

Compilation message

swap.cpp: In function 'long long int lca(int, int)':
swap.cpp:161:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  161 |     for(int i = 0; i < 3 && i < v[par[x][0]].size(); i++)
      |                             ~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 35416 KB Output is correct
2 Correct 6 ms 35416 KB Output is correct
3 Correct 7 ms 35420 KB Output is correct
4 Correct 7 ms 35420 KB Output is correct
5 Correct 7 ms 35676 KB Output is correct
6 Correct 7 ms 35676 KB Output is correct
7 Correct 7 ms 35676 KB Output is correct
8 Correct 7 ms 35676 KB Output is correct
9 Correct 124 ms 102808 KB Output is correct
10 Correct 165 ms 116936 KB Output is correct
11 Correct 158 ms 116156 KB Output is correct
12 Correct 175 ms 124640 KB Output is correct
13 Correct 165 ms 126912 KB Output is correct
14 Correct 141 ms 101312 KB Output is correct
15 Correct 389 ms 118460 KB Output is correct
16 Correct 364 ms 115112 KB Output is correct
17 Correct 426 ms 128480 KB Output is correct
18 Correct 382 ms 125888 KB Output is correct
19 Correct 99 ms 55516 KB Output is correct
20 Correct 386 ms 117232 KB Output is correct
21 Correct 368 ms 115208 KB Output is correct
22 Correct 408 ms 124560 KB Output is correct
23 Correct 402 ms 125472 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 35416 KB Output is correct
2 Correct 6 ms 35416 KB Output is correct
3 Correct 207 ms 107200 KB Output is correct
4 Correct 200 ms 114556 KB Output is correct
5 Correct 197 ms 107712 KB Output is correct
6 Correct 190 ms 111904 KB Output is correct
7 Correct 196 ms 108224 KB Output is correct
8 Correct 196 ms 106940 KB Output is correct
9 Correct 197 ms 107584 KB Output is correct
10 Correct 202 ms 107460 KB Output is correct

Subtask #3
0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 35416 KB Output is correct
2 Correct 6 ms 35416 KB Output is correct
3 Correct 7 ms 35420 KB Output is correct
4 Correct 7 ms 35420 KB Output is correct
5 Correct 7 ms 35676 KB Output is correct
6 Correct 7 ms 35676 KB Output is correct
7 Correct 7 ms 35676 KB Output is correct
8 Correct 7 ms 35676 KB Output is correct
9 Correct 7 ms 35420 KB Output is correct
10 Correct 7 ms 35676 KB Output is correct
11 Correct 7 ms 35676 KB Output is correct
12 Correct 7 ms 35544 KB Output is correct
13 Correct 7 ms 35672 KB Output is correct
14 Correct 7 ms 35420 KB Output is correct
15 Correct 7 ms 35672 KB Output is correct
16 Correct 7 ms 35676 KB Output is correct
17 Correct 7 ms 35668 KB Output is correct
18 Correct 8 ms 35420 KB Output is correct
19 Correct 7 ms 35640 KB Output is correct
20 Correct 7 ms 35584 KB Output is correct
21 Correct 7 ms 35676 KB Output is correct
22 Correct 7 ms 35680 KB Output is correct
23 Correct 7 ms 35420 KB Output is correct
24 Incorrect 8 ms 35676 KB Output isn't correct
25 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 35420 KB Output is correct
2 Correct 7 ms 35416 KB Output is correct
3 Correct 6 ms 35416 KB Output is correct
4 Correct 7 ms 35420 KB Output is correct
5 Correct 7 ms 35420 KB Output is correct
6 Correct 7 ms 35676 KB Output is correct
7 Correct 7 ms 35676 KB Output is correct
8 Correct 7 ms 35676 KB Output is correct
9 Correct 7 ms 35676 KB Output is correct
10 Correct 124 ms 102808 KB Output is correct
11 Correct 165 ms 116936 KB Output is correct
12 Correct 158 ms 116156 KB Output is correct
13 Correct 175 ms 124640 KB Output is correct
14 Correct 165 ms 126912 KB Output is correct
15 Correct 7 ms 35676 KB Output is correct
16 Correct 7 ms 35676 KB Output is correct
17 Correct 7 ms 35544 KB Output is correct
18 Correct 7 ms 35672 KB Output is correct
19 Correct 7 ms 35420 KB Output is correct
20 Correct 7 ms 35672 KB Output is correct
21 Correct 7 ms 35676 KB Output is correct
22 Correct 7 ms 35668 KB Output is correct
23 Correct 8 ms 35420 KB Output is correct
24 Correct 7 ms 35640 KB Output is correct
25 Correct 7 ms 35584 KB Output is correct
26 Correct 7 ms 35676 KB Output is correct
27 Correct 7 ms 35680 KB Output is correct
28 Correct 7 ms 35420 KB Output is correct
29 Incorrect 8 ms 35676 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 35416 KB Output is correct
2 Correct 6 ms 35416 KB Output is correct
3 Correct 7 ms 35420 KB Output is correct
4 Correct 7 ms 35420 KB Output is correct
5 Correct 7 ms 35676 KB Output is correct
6 Correct 7 ms 35676 KB Output is correct
7 Correct 7 ms 35676 KB Output is correct
8 Correct 7 ms 35676 KB Output is correct
9 Correct 124 ms 102808 KB Output is correct
10 Correct 165 ms 116936 KB Output is correct
11 Correct 158 ms 116156 KB Output is correct
12 Correct 175 ms 124640 KB Output is correct
13 Correct 165 ms 126912 KB Output is correct
14 Correct 141 ms 101312 KB Output is correct
15 Correct 389 ms 118460 KB Output is correct
16 Correct 364 ms 115112 KB Output is correct
17 Correct 426 ms 128480 KB Output is correct
18 Correct 382 ms 125888 KB Output is correct
19 Correct 207 ms 107200 KB Output is correct
20 Correct 200 ms 114556 KB Output is correct
21 Correct 197 ms 107712 KB Output is correct
22 Correct 190 ms 111904 KB Output is correct
23 Correct 196 ms 108224 KB Output is correct
24 Correct 196 ms 106940 KB Output is correct
25 Correct 197 ms 107584 KB Output is correct
26 Correct 202 ms 107460 KB Output is correct
27 Correct 7 ms 35676 KB Output is correct
28 Correct 7 ms 35676 KB Output is correct
29 Correct 7 ms 35544 KB Output is correct
30 Correct 7 ms 35672 KB Output is correct
31 Correct 7 ms 35420 KB Output is correct
32 Correct 7 ms 35672 KB Output is correct
33 Correct 7 ms 35676 KB Output is correct
34 Correct 7 ms 35668 KB Output is correct
35 Correct 8 ms 35420 KB Output is correct
36 Correct 20 ms 44024 KB Output is correct
37 Correct 183 ms 122992 KB Output is correct
38 Correct 168 ms 118900 KB Output is correct
39 Correct 145 ms 115908 KB Output is correct
40 Correct 142 ms 110784 KB Output is correct
41 Correct 138 ms 110852 KB Output is correct
42 Correct 124 ms 106684 KB Output is correct
43 Correct 166 ms 120512 KB Output is correct
44 Correct 167 ms 122048 KB Output is correct
45 Correct 162 ms 123844 KB Output is correct
46 Correct 139 ms 114624 KB Output is correct
47 Correct 28 ms 43864 KB Output is correct
48 Correct 402 ms 122036 KB Output is correct
49 Correct 388 ms 119836 KB Output is correct
50 Correct 368 ms 117820 KB Output is correct
51 Correct 344 ms 115268 KB Output is correct
52 Correct 297 ms 108988 KB Output is correct
53 Correct 238 ms 86296 KB Output is correct
54 Correct 392 ms 120868 KB Output is correct
55 Correct 427 ms 122560 KB Output is correct
56 Correct 405 ms 126660 KB Output is correct
57 Correct 297 ms 116200 KB Output is correct

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 35420 KB Output is correct
2 Correct 7 ms 35416 KB Output is correct
3 Correct 6 ms 35416 KB Output is correct
4 Correct 7 ms 35420 KB Output is correct
5 Correct 7 ms 35420 KB Output is correct
6 Correct 7 ms 35676 KB Output is correct
7 Correct 7 ms 35676 KB Output is correct
8 Correct 7 ms 35676 KB Output is correct
9 Correct 7 ms 35676 KB Output is correct
10 Correct 124 ms 102808 KB Output is correct
11 Correct 165 ms 116936 KB Output is correct
12 Correct 158 ms 116156 KB Output is correct
13 Correct 175 ms 124640 KB Output is correct
14 Correct 165 ms 126912 KB Output is correct
15 Correct 141 ms 101312 KB Output is correct
16 Correct 389 ms 118460 KB Output is correct
17 Correct 364 ms 115112 KB Output is correct
18 Correct 426 ms 128480 KB Output is correct
19 Correct 382 ms 125888 KB Output is correct
20 Correct 207 ms 107200 KB Output is correct
21 Correct 200 ms 114556 KB Output is correct
22 Correct 197 ms 107712 KB Output is correct
23 Correct 190 ms 111904 KB Output is correct
24 Correct 196 ms 108224 KB Output is correct
25 Correct 196 ms 106940 KB Output is correct
26 Correct 197 ms 107584 KB Output is correct
27 Correct 202 ms 107460 KB Output is correct
28 Correct 7 ms 35676 KB Output is correct
29 Correct 7 ms 35676 KB Output is correct
30 Correct 7 ms 35544 KB Output is correct
31 Correct 7 ms 35672 KB Output is correct
32 Correct 7 ms 35420 KB Output is correct
33 Correct 7 ms 35672 KB Output is correct
34 Correct 7 ms 35676 KB Output is correct
35 Correct 7 ms 35668 KB Output is correct
36 Correct 8 ms 35420 KB Output is correct
37 Correct 20 ms 44024 KB Output is correct
38 Correct 183 ms 122992 KB Output is correct
39 Correct 168 ms 118900 KB Output is correct
40 Correct 145 ms 115908 KB Output is correct
41 Correct 142 ms 110784 KB Output is correct
42 Correct 138 ms 110852 KB Output is correct
43 Correct 124 ms 106684 KB Output is correct
44 Correct 166 ms 120512 KB Output is correct
45 Correct 167 ms 122048 KB Output is correct
46 Correct 162 ms 123844 KB Output is correct
47 Correct 139 ms 114624 KB Output is correct
48 Correct 28 ms 43864 KB Output is correct
49 Correct 402 ms 122036 KB Output is correct
50 Correct 388 ms 119836 KB Output is correct
51 Correct 368 ms 117820 KB Output is correct
52 Correct 344 ms 115268 KB Output is correct
53 Correct 297 ms 108988 KB Output is correct
54 Correct 238 ms 86296 KB Output is correct
55 Correct 392 ms 120868 KB Output is correct
56 Correct 427 ms 122560 KB Output is correct
57 Correct 405 ms 126660 KB Output is correct
58 Correct 297 ms 116200 KB Output is correct
59 Correct 99 ms 55516 KB Output is correct
60 Correct 386 ms 117232 KB Output is correct
61 Correct 368 ms 115208 KB Output is correct
62 Correct 408 ms 124560 KB Output is correct
63 Correct 402 ms 125472 KB Output is correct
64 Correct 7 ms 35640 KB Output is correct
65 Correct 7 ms 35584 KB Output is correct
66 Correct 7 ms 35676 KB Output is correct
67 Correct 7 ms 35680 KB Output is correct
68 Correct 7 ms 35420 KB Output is correct
69 Incorrect 8 ms 35676 KB Output isn't correct
70 Halted 0 ms 0 KB -