oj.uz

Submission #655585

# Submission time Handle Problem Language Result Execution time Memory
655585 2022-11-04T18:53:43 Z urosk Swapping Cities (APIO20_swap) C++14
100 / 100
 622 ms 129464 KB 
#define here cerr<<"===========================================\n"
#define dbg(x) cerr<<#x<<": "<<x<<endl;
#include <bits/stdc++.h>
#include <ext/pb_ds/tree_policy.hpp>
#include <ext/pb_ds/assoc_container.hpp>
#define ld double
#define ll int
#define llinf 100000000000000000LL // 10^17
#define pb push_back
#define popb pop_back
#define fi first
#define sc second
#define endl '\n'
#define pll pair<ll,ll>
#define pld pair<ld,ld>
#define sz(a) (ll)(a.size())
#define all(a) a.begin(),a.end()
#define ceri(a,l,r) {cerr<<#a<<": ";for(ll i_ = l;i_<=r;i_++) cerr<<a[i_]<< " ";cerr<<endl;}
#define cer(a) {cerr<<#a<<": ";for(ll x_ : a) cerr<<x_<< " ";cerr<<endl;}

#define daj_mi_malo_vremena ios_base::sync_with_stdio(false);cerr.tie(0);cout.tie(0);cin.tie(0);

using namespace std;

#define maxn 1000005
#define lg 31
ll n,m;
vector<ll> g[maxn];
struct gr{
    ll x,y,w;
};
bool cmp(gr a,gr b){return a.w<b.w;}
vector<gr> edge;
ll c[maxn];
bool ok[maxn];
ll dsu[maxn];
ll deg[maxn];
ll in[maxn];
ll out[maxn];
ll it;
ll root(ll x){
    while(x!=dsu[x]){
        dsu[x] = dsu[dsu[x]];
        x = dsu[x];
    }
    return x;
}
ll st[maxn][lg];
ll oke[maxn][lg];
vector<pll> v;
void upd(ll x,ll y,ll w){
    deg[x]++; deg[y]++;
    bool f = (deg[x]>=3)||(deg[y]>=3);
    x = root(x); y = root(y);
    ++it;
    if(x==y){
        g[x].pb(it);
        g[it].pb(x);
        v.pb({it,x});
        ok[it] = 1;
        dsu[x] = it;
    }else{
        g[x].pb(it);
        g[it].pb(x);
        g[y].pb(it);
        g[it].pb(y);
        v.pb({it,x});
        v.pb({it,y});
        ok[it] = ok[x]|ok[y]|f;
        dsu[x] = dsu[y] = it;
    }
    c[it] = w;
}
ll itr = 0;
void dfs(ll u,ll p){
    st[u][0] = p;
    oke[u][0] = ok[p];
    in[u] = ++itr;
    for(ll s : g[u]){
        if(s==p) continue;
        dfs(s,u);
    }
    out[u] = itr;
}
bool intree(ll x,ll y){
    return in[y]<=in[x]&&out[x]<=out[y];
}
ll lca(ll x,ll y){
    if(intree(y,x)) return x;
    if(intree(x,y)) return y;
    for(ll j = lg-1;j>=0;j--){
        if(!intree(x,st[y][j])) y = st[y][j];
    }
    return st[y][0];
}
void init(int N, int M, vector<int> U, vector<int> V, vector<int> W) {
    n = N; m = M;
    it = n;
    iota(dsu+1,dsu+maxn,1);
    for(ll i = 0;i<m;i++){
        ll x = U[i]; ll y = V[i]; ll w = W[i];
        ++x; ++y;
        edge.pb({x,y,w});
    }
    sort(all(edge),cmp);
    for(gr e : edge){
        ll x = e.x; ll y = e.y; ll w = e.w;
        upd(x,y,w);
    }
    dfs(it,it);
    for(ll j = 1;j<lg;j++){
        for(ll i = 1;i<=it;i++) st[i][j] = st[st[i][j-1]][j-1];
    }
    for(ll j = 1;j<lg;j++){
        for(ll i = 1;i<=it;i++) oke[i][j] = oke[i][j-1]|oke[st[i][j-1]][j-1];
    }
}
int getMinimumFuelCapacity(int X, int Y) {
    ll x = X; ll y = Y;
    ++x; ++y;
    ll z = lca(x,y);
    if(ok[z]) return c[z];
    for(ll j = lg-1;j>=0;j--){
        if(!oke[z][j]) z = st[z][j];
    }
    z = st[z][0];
    ll ans = c[z];
    if(ok[z]==0) ans = -1;
    return ans;
}
/*
5 6
0 1 4
0 2 4
1 2 1
1 3 2
1 4 10
2 3 3
3
1 2
2 4
0 1
*/

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 27732 KB Output is correct
2 Correct 14 ms 27644 KB Output is correct
3 Correct 18 ms 27748 KB Output is correct
4 Correct 15 ms 28024 KB Output is correct
5 Correct 14 ms 28244 KB Output is correct
6 Correct 15 ms 28212 KB Output is correct
7 Correct 16 ms 28372 KB Output is correct
8 Correct 17 ms 28280 KB Output is correct
9 Correct 237 ms 76684 KB Output is correct
10 Correct 280 ms 87660 KB Output is correct
11 Correct 262 ms 86712 KB Output is correct
12 Correct 300 ms 90176 KB Output is correct
13 Correct 266 ms 92428 KB Output is correct
14 Correct 224 ms 76656 KB Output is correct
15 Correct 381 ms 89984 KB Output is correct
16 Correct 402 ms 88160 KB Output is correct
17 Correct 415 ms 91944 KB Output is correct
18 Correct 534 ms 94256 KB Output is correct
19 Correct 120 ms 41024 KB Output is correct
20 Correct 384 ms 91256 KB Output is correct
21 Correct 380 ms 89008 KB Output is correct
22 Correct 393 ms 93220 KB Output is correct
23 Correct 515 ms 95612 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 27732 KB Output is correct
2 Correct 14 ms 27644 KB Output is correct
3 Correct 418 ms 94104 KB Output is correct
4 Correct 446 ms 97528 KB Output is correct
5 Correct 421 ms 95316 KB Output is correct
6 Correct 440 ms 97304 KB Output is correct
7 Correct 417 ms 96360 KB Output is correct
8 Correct 423 ms 93632 KB Output is correct
9 Correct 434 ms 95896 KB Output is correct
10 Correct 441 ms 92992 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 27732 KB Output is correct
2 Correct 14 ms 27644 KB Output is correct
3 Correct 18 ms 27748 KB Output is correct
4 Correct 15 ms 28024 KB Output is correct
5 Correct 14 ms 28244 KB Output is correct
6 Correct 15 ms 28212 KB Output is correct
7 Correct 16 ms 28372 KB Output is correct
8 Correct 17 ms 28280 KB Output is correct
9 Correct 14 ms 27732 KB Output is correct
10 Correct 15 ms 28344 KB Output is correct
11 Correct 15 ms 28380 KB Output is correct
12 Correct 15 ms 28340 KB Output is correct
13 Correct 16 ms 28272 KB Output is correct
14 Correct 20 ms 28396 KB Output is correct
15 Correct 18 ms 28316 KB Output is correct
16 Correct 15 ms 28372 KB Output is correct
17 Correct 15 ms 28372 KB Output is correct
18 Correct 17 ms 28400 KB Output is correct
19 Correct 15 ms 28244 KB Output is correct
20 Correct 15 ms 28372 KB Output is correct
21 Correct 16 ms 28372 KB Output is correct
22 Correct 16 ms 28392 KB Output is correct
23 Correct 15 ms 28188 KB Output is correct
24 Correct 16 ms 28628 KB Output is correct
25 Correct 16 ms 28628 KB Output is correct
26 Correct 17 ms 28756 KB Output is correct
27 Correct 18 ms 28428 KB Output is correct
28 Correct 19 ms 28736 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 27732 KB Output is correct
2 Correct 16 ms 27732 KB Output is correct
3 Correct 14 ms 27644 KB Output is correct
4 Correct 18 ms 27748 KB Output is correct
5 Correct 15 ms 28024 KB Output is correct
6 Correct 14 ms 28244 KB Output is correct
7 Correct 15 ms 28212 KB Output is correct
8 Correct 16 ms 28372 KB Output is correct
9 Correct 17 ms 28280 KB Output is correct
10 Correct 237 ms 76684 KB Output is correct
11 Correct 280 ms 87660 KB Output is correct
12 Correct 262 ms 86712 KB Output is correct
13 Correct 300 ms 90176 KB Output is correct
14 Correct 266 ms 92428 KB Output is correct
15 Correct 15 ms 28344 KB Output is correct
16 Correct 15 ms 28380 KB Output is correct
17 Correct 15 ms 28340 KB Output is correct
18 Correct 16 ms 28272 KB Output is correct
19 Correct 20 ms 28396 KB Output is correct
20 Correct 18 ms 28316 KB Output is correct
21 Correct 15 ms 28372 KB Output is correct
22 Correct 15 ms 28372 KB Output is correct
23 Correct 17 ms 28400 KB Output is correct
24 Correct 15 ms 28244 KB Output is correct
25 Correct 15 ms 28372 KB Output is correct
26 Correct 16 ms 28372 KB Output is correct
27 Correct 16 ms 28392 KB Output is correct
28 Correct 15 ms 28188 KB Output is correct
29 Correct 16 ms 28628 KB Output is correct
30 Correct 16 ms 28628 KB Output is correct
31 Correct 17 ms 28756 KB Output is correct
32 Correct 18 ms 28428 KB Output is correct
33 Correct 19 ms 28736 KB Output is correct
34 Correct 38 ms 36136 KB Output is correct
35 Correct 270 ms 90080 KB Output is correct
36 Correct 273 ms 90148 KB Output is correct
37 Correct 289 ms 90104 KB Output is correct
38 Correct 264 ms 89168 KB Output is correct
39 Correct 293 ms 88868 KB Output is correct
40 Correct 244 ms 83780 KB Output is correct
41 Correct 275 ms 90084 KB Output is correct
42 Correct 286 ms 90132 KB Output is correct
43 Correct 262 ms 93180 KB Output is correct
44 Correct 288 ms 90004 KB Output is correct
45 Correct 317 ms 103696 KB Output is correct
46 Correct 262 ms 90076 KB Output is correct
47 Correct 287 ms 90080 KB Output is correct
48 Correct 297 ms 94720 KB Output is correct
49 Correct 248 ms 87608 KB Output is correct
50 Correct 182 ms 75020 KB Output is correct
51 Correct 311 ms 92776 KB Output is correct
52 Correct 371 ms 113268 KB Output is correct
53 Correct 401 ms 118768 KB Output is correct
54 Correct 423 ms 127776 KB Output is correct
55 Correct 291 ms 92860 KB Output is correct
56 Correct 389 ms 118516 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 16 ms 27732 KB Output is correct
2 Correct 14 ms 27644 KB Output is correct
3 Correct 18 ms 27748 KB Output is correct
4 Correct 15 ms 28024 KB Output is correct
5 Correct 14 ms 28244 KB Output is correct
6 Correct 15 ms 28212 KB Output is correct
7 Correct 16 ms 28372 KB Output is correct
8 Correct 17 ms 28280 KB Output is correct
9 Correct 237 ms 76684 KB Output is correct
10 Correct 280 ms 87660 KB Output is correct
11 Correct 262 ms 86712 KB Output is correct
12 Correct 300 ms 90176 KB Output is correct
13 Correct 266 ms 92428 KB Output is correct
14 Correct 224 ms 76656 KB Output is correct
15 Correct 381 ms 89984 KB Output is correct
16 Correct 402 ms 88160 KB Output is correct
17 Correct 415 ms 91944 KB Output is correct
18 Correct 534 ms 94256 KB Output is correct
19 Correct 418 ms 94104 KB Output is correct
20 Correct 446 ms 97528 KB Output is correct
21 Correct 421 ms 95316 KB Output is correct
22 Correct 440 ms 97304 KB Output is correct
23 Correct 417 ms 96360 KB Output is correct
24 Correct 423 ms 93632 KB Output is correct
25 Correct 434 ms 95896 KB Output is correct
26 Correct 441 ms 92992 KB Output is correct
27 Correct 15 ms 28344 KB Output is correct
28 Correct 15 ms 28380 KB Output is correct
29 Correct 15 ms 28340 KB Output is correct
30 Correct 16 ms 28272 KB Output is correct
31 Correct 20 ms 28396 KB Output is correct
32 Correct 18 ms 28316 KB Output is correct
33 Correct 15 ms 28372 KB Output is correct
34 Correct 15 ms 28372 KB Output is correct
35 Correct 17 ms 28400 KB Output is correct
36 Correct 38 ms 36136 KB Output is correct
37 Correct 270 ms 90080 KB Output is correct
38 Correct 273 ms 90148 KB Output is correct
39 Correct 289 ms 90104 KB Output is correct
40 Correct 264 ms 89168 KB Output is correct
41 Correct 293 ms 88868 KB Output is correct
42 Correct 244 ms 83780 KB Output is correct
43 Correct 275 ms 90084 KB Output is correct
44 Correct 286 ms 90132 KB Output is correct
45 Correct 262 ms 93180 KB Output is correct
46 Correct 288 ms 90004 KB Output is correct
47 Correct 40 ms 35724 KB Output is correct
48 Correct 387 ms 92544 KB Output is correct
49 Correct 397 ms 92624 KB Output is correct
50 Correct 398 ms 92376 KB Output is correct
51 Correct 388 ms 92124 KB Output is correct
52 Correct 366 ms 88552 KB Output is correct
53 Correct 286 ms 72568 KB Output is correct
54 Correct 412 ms 93164 KB Output is correct
55 Correct 377 ms 92640 KB Output is correct
56 Correct 454 ms 95012 KB Output is correct
57 Correct 399 ms 93220 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 27732 KB Output is correct
2 Correct 16 ms 27732 KB Output is correct
3 Correct 14 ms 27644 KB Output is correct
4 Correct 18 ms 27748 KB Output is correct
5 Correct 15 ms 28024 KB Output is correct
6 Correct 14 ms 28244 KB Output is correct
7 Correct 15 ms 28212 KB Output is correct
8 Correct 16 ms 28372 KB Output is correct
9 Correct 17 ms 28280 KB Output is correct
10 Correct 237 ms 76684 KB Output is correct
11 Correct 280 ms 87660 KB Output is correct
12 Correct 262 ms 86712 KB Output is correct
13 Correct 300 ms 90176 KB Output is correct
14 Correct 266 ms 92428 KB Output is correct
15 Correct 224 ms 76656 KB Output is correct
16 Correct 381 ms 89984 KB Output is correct
17 Correct 402 ms 88160 KB Output is correct
18 Correct 415 ms 91944 KB Output is correct
19 Correct 534 ms 94256 KB Output is correct
20 Correct 418 ms 94104 KB Output is correct
21 Correct 446 ms 97528 KB Output is correct
22 Correct 421 ms 95316 KB Output is correct
23 Correct 440 ms 97304 KB Output is correct
24 Correct 417 ms 96360 KB Output is correct
25 Correct 423 ms 93632 KB Output is correct
26 Correct 434 ms 95896 KB Output is correct
27 Correct 441 ms 92992 KB Output is correct
28 Correct 15 ms 28344 KB Output is correct
29 Correct 15 ms 28380 KB Output is correct
30 Correct 15 ms 28340 KB Output is correct
31 Correct 16 ms 28272 KB Output is correct
32 Correct 20 ms 28396 KB Output is correct
33 Correct 18 ms 28316 KB Output is correct
34 Correct 15 ms 28372 KB Output is correct
35 Correct 15 ms 28372 KB Output is correct
36 Correct 17 ms 28400 KB Output is correct
37 Correct 38 ms 36136 KB Output is correct
38 Correct 270 ms 90080 KB Output is correct
39 Correct 273 ms 90148 KB Output is correct
40 Correct 289 ms 90104 KB Output is correct
41 Correct 264 ms 89168 KB Output is correct
42 Correct 293 ms 88868 KB Output is correct
43 Correct 244 ms 83780 KB Output is correct
44 Correct 275 ms 90084 KB Output is correct
45 Correct 286 ms 90132 KB Output is correct
46 Correct 262 ms 93180 KB Output is correct
47 Correct 288 ms 90004 KB Output is correct
48 Correct 40 ms 35724 KB Output is correct
49 Correct 387 ms 92544 KB Output is correct
50 Correct 397 ms 92624 KB Output is correct
51 Correct 398 ms 92376 KB Output is correct
52 Correct 388 ms 92124 KB Output is correct
53 Correct 366 ms 88552 KB Output is correct
54 Correct 286 ms 72568 KB Output is correct
55 Correct 412 ms 93164 KB Output is correct
56 Correct 377 ms 92640 KB Output is correct
57 Correct 454 ms 95012 KB Output is correct
58 Correct 399 ms 93220 KB Output is correct
59 Correct 120 ms 41024 KB Output is correct
60 Correct 384 ms 91256 KB Output is correct
61 Correct 380 ms 89008 KB Output is correct
62 Correct 393 ms 93220 KB Output is correct
63 Correct 515 ms 95612 KB Output is correct
64 Correct 15 ms 28244 KB Output is correct
65 Correct 15 ms 28372 KB Output is correct
66 Correct 16 ms 28372 KB Output is correct
67 Correct 16 ms 28392 KB Output is correct
68 Correct 15 ms 28188 KB Output is correct
69 Correct 16 ms 28628 KB Output is correct
70 Correct 16 ms 28628 KB Output is correct
71 Correct 17 ms 28756 KB Output is correct
72 Correct 18 ms 28428 KB Output is correct
73 Correct 19 ms 28736 KB Output is correct
74 Correct 317 ms 103696 KB Output is correct
75 Correct 262 ms 90076 KB Output is correct
76 Correct 287 ms 90080 KB Output is correct
77 Correct 297 ms 94720 KB Output is correct
78 Correct 248 ms 87608 KB Output is correct
79 Correct 182 ms 75020 KB Output is correct
80 Correct 311 ms 92776 KB Output is correct
81 Correct 371 ms 113268 KB Output is correct
82 Correct 401 ms 118768 KB Output is correct
83 Correct 423 ms 127776 KB Output is correct
84 Correct 291 ms 92860 KB Output is correct
85 Correct 389 ms 118516 KB Output is correct
86 Correct 160 ms 55156 KB Output is correct
87 Correct 378 ms 92560 KB Output is correct
88 Correct 383 ms 92664 KB Output is correct
89 Correct 492 ms 93884 KB Output is correct
90 Correct 340 ms 93128 KB Output is correct
91 Correct 356 ms 89236 KB Output is correct
92 Correct 443 ms 93280 KB Output is correct
93 Correct 508 ms 114552 KB Output is correct
94 Correct 622 ms 120536 KB Output is correct
95 Correct 566 ms 129464 KB Output is correct
96 Correct 442 ms 95268 KB Output is correct
97 Correct 527 ms 107400 KB Output is correct