oj.uz

Submission #409697

# Submission time Handle Problem Language Result Execution time Memory
409697 2021-05-21T11:12:36 Z kwongweng Swapping Cities (APIO20_swap) C++17
100 / 100
 391 ms 22348 KB 
#include "swap.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
#define FOR(i, a, b) for(int i = a; i < b; i++)
#define ROF(i, a, b) for(int i = a; i >= b; i--)
#define ms memset
#define pb push_back
#define F first
#define S second

vector<pair<int, ii> > edges;
int n, m;
vi p(100001), sz(100001, 1), s(100001), e(100001), line(100001, -1), sub(100001);
vi d(100001), g[100001];

int get(int a){
    if (p[a] == a) return a;
    return get(p[a]);
}

void Union(int a, int b, int w){
    int c = get(a); int d = get(b);
    if (c == d){
        if (line[c] == -1) line[c] = w;
        return;
    }
    if (sz[c] < sz[d]){
        swap(c, d); swap(a, b);
    }
    p[d] = c;
    sz[c] += sz[d];
    sub[d] = w;
    if (line[c] == -1 && line[d] == -1){
        if (s[c] == a && b == s[d]){
            s[c] = e[d]; return;
        }
        if (s[c] == a && b == e[d]){
            s[c] = s[d]; return;
        }
        if (e[c] == a && b == s[d]){
            e[c] = e[d]; return;
        }
        if (e[c] == a && b == e[d]){
            e[c] = s[d]; return;
        }
        line[c] = w; return;
    }
    if (line[c] == -1) line[c] = w;
}

void init(int N, int M, vi U, vi V, vi W) {
    n = N; m = M;
    FOR(i, 0, m){
        edges.pb({W[i], {U[i], V[i]}});
    }
    FOR(i, 0, n){
        p[i] = i;
        s[i] = i;
        e[i] = i;
    }
    sort(edges.begin(), edges.end());
    FOR(i, 0, m){
        Union(edges[i].S.F, edges[i].S.S, edges[i].F);
    }
    int head;
    FOR(i, 0, n){
        if (p[i] != i){
            g[p[i]].pb(i); continue;
        }
        head = i;
    }
    vi bfs; bfs.pb(head);
    FOR(i, 0, bfs.size()){
        int u = bfs[i];
        for (int v : g[u]){
            d[v] = d[u] + 1;
            bfs.pb(v);
        }
    }
}


int getMinimumFuelCapacity(int x, int y) {
    int l = 0, r = 1000000001;
    while (r-l > 1){
        int u = x; int v = y;
        int m = (l+r)/2;
        while(sub[u] <= m && u != p[u]){
            u = p[u];
        }
        while(sub[v] <= m && v != p[v]){
            v = p[v];
        }
        if (u == v && line[u] <= m && line[u] != -1){
            r = m;
        }else{
            l = m;
        }
    }
    if (r == 1000000001) return -1;
    else return r;
    return -1;
}

Compilation message

swap.cpp: In function 'void init(int, int, vi, vi, vi)':
swap.cpp:8:39: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 | #define FOR(i, a, b) for(int i = a; i < b; i++)
......
   77 |     FOR(i, 0, bfs.size()){
      |         ~~~~~~~~~~~~~~~~               
swap.cpp:77:5: note: in expansion of macro 'FOR'
   77 |     FOR(i, 0, bfs.size()){
      |     ^~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5376 KB Output is correct
2 Correct 3 ms 5384 KB Output is correct
3 Correct 3 ms 5324 KB Output is correct
4 Correct 4 ms 5324 KB Output is correct
5 Correct 4 ms 5420 KB Output is correct
6 Correct 4 ms 5452 KB Output is correct
7 Correct 4 ms 5428 KB Output is correct
8 Correct 4 ms 5452 KB Output is correct
9 Correct 54 ms 11576 KB Output is correct
10 Correct 63 ms 12768 KB Output is correct
11 Correct 68 ms 12756 KB Output is correct
12 Correct 66 ms 13060 KB Output is correct
13 Correct 56 ms 12416 KB Output is correct
14 Correct 74 ms 11912 KB Output is correct
15 Correct 296 ms 16748 KB Output is correct
16 Correct 295 ms 16564 KB Output is correct
17 Correct 299 ms 16912 KB Output is correct
18 Correct 180 ms 16396 KB Output is correct
19 Correct 181 ms 11604 KB Output is correct
20 Correct 293 ms 17204 KB Output is correct
21 Correct 309 ms 17484 KB Output is correct
22 Correct 318 ms 17768 KB Output is correct
23 Correct 194 ms 17268 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5376 KB Output is correct
2 Correct 3 ms 5384 KB Output is correct
3 Correct 187 ms 16372 KB Output is correct
4 Correct 182 ms 16500 KB Output is correct
5 Correct 196 ms 17124 KB Output is correct
6 Correct 179 ms 16372 KB Output is correct
7 Correct 186 ms 16672 KB Output is correct
8 Correct 185 ms 16488 KB Output is correct
9 Correct 181 ms 16568 KB Output is correct
10 Correct 188 ms 16504 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5376 KB Output is correct
2 Correct 3 ms 5384 KB Output is correct
3 Correct 3 ms 5324 KB Output is correct
4 Correct 4 ms 5324 KB Output is correct
5 Correct 4 ms 5420 KB Output is correct
6 Correct 4 ms 5452 KB Output is correct
7 Correct 4 ms 5428 KB Output is correct
8 Correct 4 ms 5452 KB Output is correct
9 Correct 3 ms 5324 KB Output is correct
10 Correct 4 ms 5452 KB Output is correct
11 Correct 4 ms 5408 KB Output is correct
12 Correct 4 ms 5452 KB Output is correct
13 Correct 4 ms 5452 KB Output is correct
14 Correct 4 ms 5452 KB Output is correct
15 Correct 4 ms 5452 KB Output is correct
16 Correct 4 ms 5452 KB Output is correct
17 Correct 4 ms 5452 KB Output is correct
18 Correct 4 ms 5452 KB Output is correct
19 Correct 4 ms 5452 KB Output is correct
20 Correct 4 ms 5452 KB Output is correct
21 Correct 4 ms 5416 KB Output is correct
22 Correct 4 ms 5420 KB Output is correct
23 Correct 4 ms 5452 KB Output is correct
24 Correct 5 ms 5412 KB Output is correct
25 Correct 4 ms 5452 KB Output is correct
26 Correct 5 ms 5452 KB Output is correct
27 Correct 4 ms 5452 KB Output is correct
28 Correct 4 ms 5452 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5324 KB Output is correct
2 Correct 3 ms 5376 KB Output is correct
3 Correct 3 ms 5384 KB Output is correct
4 Correct 3 ms 5324 KB Output is correct
5 Correct 4 ms 5324 KB Output is correct
6 Correct 4 ms 5420 KB Output is correct
7 Correct 4 ms 5452 KB Output is correct
8 Correct 4 ms 5428 KB Output is correct
9 Correct 4 ms 5452 KB Output is correct
10 Correct 54 ms 11576 KB Output is correct
11 Correct 63 ms 12768 KB Output is correct
12 Correct 68 ms 12756 KB Output is correct
13 Correct 66 ms 13060 KB Output is correct
14 Correct 56 ms 12416 KB Output is correct
15 Correct 4 ms 5452 KB Output is correct
16 Correct 4 ms 5408 KB Output is correct
17 Correct 4 ms 5452 KB Output is correct
18 Correct 4 ms 5452 KB Output is correct
19 Correct 4 ms 5452 KB Output is correct
20 Correct 4 ms 5452 KB Output is correct
21 Correct 4 ms 5452 KB Output is correct
22 Correct 4 ms 5452 KB Output is correct
23 Correct 4 ms 5452 KB Output is correct
24 Correct 4 ms 5452 KB Output is correct
25 Correct 4 ms 5452 KB Output is correct
26 Correct 4 ms 5416 KB Output is correct
27 Correct 4 ms 5420 KB Output is correct
28 Correct 4 ms 5452 KB Output is correct
29 Correct 5 ms 5412 KB Output is correct
30 Correct 4 ms 5452 KB Output is correct
31 Correct 5 ms 5452 KB Output is correct
32 Correct 4 ms 5452 KB Output is correct
33 Correct 4 ms 5452 KB Output is correct
34 Correct 11 ms 6408 KB Output is correct
35 Correct 65 ms 12804 KB Output is correct
36 Correct 68 ms 12852 KB Output is correct
37 Correct 67 ms 12856 KB Output is correct
38 Correct 64 ms 12652 KB Output is correct
39 Correct 66 ms 12648 KB Output is correct
40 Correct 61 ms 12116 KB Output is correct
41 Correct 73 ms 13072 KB Output is correct
42 Correct 70 ms 12784 KB Output is correct
43 Correct 60 ms 12160 KB Output is correct
44 Correct 70 ms 13072 KB Output is correct
45 Correct 91 ms 15284 KB Output is correct
46 Correct 88 ms 12856 KB Output is correct
47 Correct 65 ms 12812 KB Output is correct
48 Correct 85 ms 13336 KB Output is correct
49 Correct 79 ms 15024 KB Output is correct
50 Correct 61 ms 12152 KB Output is correct
51 Correct 73 ms 13792 KB Output is correct
52 Correct 99 ms 16564 KB Output is correct
53 Correct 112 ms 17532 KB Output is correct
54 Correct 134 ms 18464 KB Output is correct
55 Correct 54 ms 12088 KB Output is correct
56 Correct 100 ms 16972 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5376 KB Output is correct
2 Correct 3 ms 5384 KB Output is correct
3 Correct 3 ms 5324 KB Output is correct
4 Correct 4 ms 5324 KB Output is correct
5 Correct 4 ms 5420 KB Output is correct
6 Correct 4 ms 5452 KB Output is correct
7 Correct 4 ms 5428 KB Output is correct
8 Correct 4 ms 5452 KB Output is correct
9 Correct 54 ms 11576 KB Output is correct
10 Correct 63 ms 12768 KB Output is correct
11 Correct 68 ms 12756 KB Output is correct
12 Correct 66 ms 13060 KB Output is correct
13 Correct 56 ms 12416 KB Output is correct
14 Correct 74 ms 11912 KB Output is correct
15 Correct 296 ms 16748 KB Output is correct
16 Correct 295 ms 16564 KB Output is correct
17 Correct 299 ms 16912 KB Output is correct
18 Correct 180 ms 16396 KB Output is correct
19 Correct 187 ms 16372 KB Output is correct
20 Correct 182 ms 16500 KB Output is correct
21 Correct 196 ms 17124 KB Output is correct
22 Correct 179 ms 16372 KB Output is correct
23 Correct 186 ms 16672 KB Output is correct
24 Correct 185 ms 16488 KB Output is correct
25 Correct 181 ms 16568 KB Output is correct
26 Correct 188 ms 16504 KB Output is correct
27 Correct 4 ms 5452 KB Output is correct
28 Correct 4 ms 5408 KB Output is correct
29 Correct 4 ms 5452 KB Output is correct
30 Correct 4 ms 5452 KB Output is correct
31 Correct 4 ms 5452 KB Output is correct
32 Correct 4 ms 5452 KB Output is correct
33 Correct 4 ms 5452 KB Output is correct
34 Correct 4 ms 5452 KB Output is correct
35 Correct 4 ms 5452 KB Output is correct
36 Correct 11 ms 6408 KB Output is correct
37 Correct 65 ms 12804 KB Output is correct
38 Correct 68 ms 12852 KB Output is correct
39 Correct 67 ms 12856 KB Output is correct
40 Correct 64 ms 12652 KB Output is correct
41 Correct 66 ms 12648 KB Output is correct
42 Correct 61 ms 12116 KB Output is correct
43 Correct 73 ms 13072 KB Output is correct
44 Correct 70 ms 12784 KB Output is correct
45 Correct 60 ms 12160 KB Output is correct
46 Correct 70 ms 13072 KB Output is correct
47 Correct 31 ms 6876 KB Output is correct
48 Correct 319 ms 16876 KB Output is correct
49 Correct 307 ms 16928 KB Output is correct
50 Correct 309 ms 16960 KB Output is correct
51 Correct 299 ms 16800 KB Output is correct
52 Correct 288 ms 16448 KB Output is correct
53 Correct 258 ms 15660 KB Output is correct
54 Correct 335 ms 17792 KB Output is correct
55 Correct 339 ms 16912 KB Output is correct
56 Correct 198 ms 16356 KB Output is correct
57 Correct 288 ms 17768 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 5324 KB Output is correct
2 Correct 3 ms 5376 KB Output is correct
3 Correct 3 ms 5384 KB Output is correct
4 Correct 3 ms 5324 KB Output is correct
5 Correct 4 ms 5324 KB Output is correct
6 Correct 4 ms 5420 KB Output is correct
7 Correct 4 ms 5452 KB Output is correct
8 Correct 4 ms 5428 KB Output is correct
9 Correct 4 ms 5452 KB Output is correct
10 Correct 54 ms 11576 KB Output is correct
11 Correct 63 ms 12768 KB Output is correct
12 Correct 68 ms 12756 KB Output is correct
13 Correct 66 ms 13060 KB Output is correct
14 Correct 56 ms 12416 KB Output is correct
15 Correct 74 ms 11912 KB Output is correct
16 Correct 296 ms 16748 KB Output is correct
17 Correct 295 ms 16564 KB Output is correct
18 Correct 299 ms 16912 KB Output is correct
19 Correct 180 ms 16396 KB Output is correct
20 Correct 187 ms 16372 KB Output is correct
21 Correct 182 ms 16500 KB Output is correct
22 Correct 196 ms 17124 KB Output is correct
23 Correct 179 ms 16372 KB Output is correct
24 Correct 186 ms 16672 KB Output is correct
25 Correct 185 ms 16488 KB Output is correct
26 Correct 181 ms 16568 KB Output is correct
27 Correct 188 ms 16504 KB Output is correct
28 Correct 4 ms 5452 KB Output is correct
29 Correct 4 ms 5408 KB Output is correct
30 Correct 4 ms 5452 KB Output is correct
31 Correct 4 ms 5452 KB Output is correct
32 Correct 4 ms 5452 KB Output is correct
33 Correct 4 ms 5452 KB Output is correct
34 Correct 4 ms 5452 KB Output is correct
35 Correct 4 ms 5452 KB Output is correct
36 Correct 4 ms 5452 KB Output is correct
37 Correct 11 ms 6408 KB Output is correct
38 Correct 65 ms 12804 KB Output is correct
39 Correct 68 ms 12852 KB Output is correct
40 Correct 67 ms 12856 KB Output is correct
41 Correct 64 ms 12652 KB Output is correct
42 Correct 66 ms 12648 KB Output is correct
43 Correct 61 ms 12116 KB Output is correct
44 Correct 73 ms 13072 KB Output is correct
45 Correct 70 ms 12784 KB Output is correct
46 Correct 60 ms 12160 KB Output is correct
47 Correct 70 ms 13072 KB Output is correct
48 Correct 31 ms 6876 KB Output is correct
49 Correct 319 ms 16876 KB Output is correct
50 Correct 307 ms 16928 KB Output is correct
51 Correct 309 ms 16960 KB Output is correct
52 Correct 299 ms 16800 KB Output is correct
53 Correct 288 ms 16448 KB Output is correct
54 Correct 258 ms 15660 KB Output is correct
55 Correct 335 ms 17792 KB Output is correct
56 Correct 339 ms 16912 KB Output is correct
57 Correct 198 ms 16356 KB Output is correct
58 Correct 288 ms 17768 KB Output is correct
59 Correct 181 ms 11604 KB Output is correct
60 Correct 293 ms 17204 KB Output is correct
61 Correct 309 ms 17484 KB Output is correct
62 Correct 318 ms 17768 KB Output is correct
63 Correct 194 ms 17268 KB Output is correct
64 Correct 4 ms 5452 KB Output is correct
65 Correct 4 ms 5452 KB Output is correct
66 Correct 4 ms 5416 KB Output is correct
67 Correct 4 ms 5420 KB Output is correct
68 Correct 4 ms 5452 KB Output is correct
69 Correct 5 ms 5412 KB Output is correct
70 Correct 4 ms 5452 KB Output is correct
71 Correct 5 ms 5452 KB Output is correct
72 Correct 4 ms 5452 KB Output is correct
73 Correct 4 ms 5452 KB Output is correct
74 Correct 91 ms 15284 KB Output is correct
75 Correct 88 ms 12856 KB Output is correct
76 Correct 65 ms 12812 KB Output is correct
77 Correct 85 ms 13336 KB Output is correct
78 Correct 79 ms 15024 KB Output is correct
79 Correct 61 ms 12152 KB Output is correct
80 Correct 73 ms 13792 KB Output is correct
81 Correct 99 ms 16564 KB Output is correct
82 Correct 112 ms 17532 KB Output is correct
83 Correct 134 ms 18464 KB Output is correct
84 Correct 54 ms 12088 KB Output is correct
85 Correct 100 ms 16972 KB Output is correct
86 Correct 74 ms 9660 KB Output is correct
87 Correct 301 ms 16904 KB Output is correct
88 Correct 307 ms 16828 KB Output is correct
89 Correct 229 ms 16872 KB Output is correct
90 Correct 241 ms 18744 KB Output is correct
91 Correct 245 ms 18412 KB Output is correct
92 Correct 246 ms 18556 KB Output is correct
93 Correct 337 ms 20484 KB Output is correct
94 Correct 292 ms 21300 KB Output is correct
95 Correct 391 ms 22348 KB Output is correct
96 Correct 198 ms 16488 KB Output is correct
97 Correct 261 ms 19204 KB Output is correct