oj.uz

Submission #612627

# Submission time Handle Problem Language Result Execution time Memory
612627 2022-07-29T18:29:50 Z krit3379 Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 891 ms 224872 KB 
#include<bits/stdc++.h>
#include<ext/pb_ds/assoc_container.hpp>
using namespace std;
using namespace __gnu_pbds;
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#define N 30005

struct A{
    unsigned short a,b;
};

int a[N],p[N],f,b;
vector<int> g[N];
bitset<N> vis;
gp_hash_table<int,int> s[N];
A arr[8000000];

int main(){
    int n,m,i;
    scanf("%d %d",&n,&m);
    for(i=0;i<m;i++){
        scanf("%d %d",&a[i],&p[i]);
        g[a[i]].push_back(p[i]);
    }
    arr[0]={a[0],p[0]};
    s[a[0]][p[0]]=0;
    while(f<=b){
        auto [u,i]=arr[f++];
        int x=u,po=i,w=s[x][po];
        if(x==a[1]){printf("%d",w);return 0;}
        if(x>=po&&s[x-po].find(po)==s[x-po].end())arr[++b]={x-po,po},s[x-po][po]=w+1;
        if(x+po<n&&s[x+po].find(po)==s[x+po].end())arr[++b]={x+po,po},s[x+po][po]=w+1;
        if(vis[x])continue;
        vis[x]=true;
        for(auto po:g[x]){
            if(x>=po&&s[x-po].find(po)==s[x-po].end())arr[++b]={x-po,po},s[x-po][po]=w+1;
            if(x+po<n&&s[x+po].find(po)==s[x+po].end())arr[++b]={x+po,po},s[x+po][po]=w+1;
        }
    }
    printf("-1");
    return 0;
}

Compilation message

skyscraper.cpp: In function 'int main()':
skyscraper.cpp:26:16: warning: narrowing conversion of 'a[0]' from 'int' to 'short unsigned int' [-Wnarrowing]
   26 |     arr[0]={a[0],p[0]};
      |             ~~~^
skyscraper.cpp:26:21: warning: narrowing conversion of 'p[0]' from 'int' to 'short unsigned int' [-Wnarrowing]
   26 |     arr[0]={a[0],p[0]};
      |                  ~~~^
skyscraper.cpp:32:62: warning: narrowing conversion of '(x - po)' from 'int' to 'short unsigned int' [-Wnarrowing]
   32 |         if(x>=po&&s[x-po].find(po)==s[x-po].end())arr[++b]={x-po,po},s[x-po][po]=w+1;
      |                                                             ~^~~
skyscraper.cpp:32:66: warning: narrowing conversion of 'po' from 'int' to 'short unsigned int' [-Wnarrowing]
   32 |         if(x>=po&&s[x-po].find(po)==s[x-po].end())arr[++b]={x-po,po},s[x-po][po]=w+1;
      |                                                                  ^~
skyscraper.cpp:33:63: warning: narrowing conversion of '(x + po)' from 'int' to 'short unsigned int' [-Wnarrowing]
   33 |         if(x+po<n&&s[x+po].find(po)==s[x+po].end())arr[++b]={x+po,po},s[x+po][po]=w+1;
      |                                                              ~^~~
skyscraper.cpp:33:67: warning: narrowing conversion of 'po' from 'int' to 'short unsigned int' [-Wnarrowing]
   33 |         if(x+po<n&&s[x+po].find(po)==s[x+po].end())arr[++b]={x+po,po},s[x+po][po]=w+1;
      |                                                                   ^~
skyscraper.cpp:37:66: warning: narrowing conversion of '(x - po)' from 'int' to 'short unsigned int' [-Wnarrowing]
   37 |             if(x>=po&&s[x-po].find(po)==s[x-po].end())arr[++b]={x-po,po},s[x-po][po]=w+1;
      |                                                                 ~^~~
skyscraper.cpp:37:70: warning: narrowing conversion of 'po' from 'int' to 'short unsigned int' [-Wnarrowing]
   37 |             if(x>=po&&s[x-po].find(po)==s[x-po].end())arr[++b]={x-po,po},s[x-po][po]=w+1;
      |                                                                      ^~
skyscraper.cpp:38:67: warning: narrowing conversion of '(x + po)' from 'int' to 'short unsigned int' [-Wnarrowing]
   38 |             if(x+po<n&&s[x+po].find(po)==s[x+po].end())arr[++b]={x+po,po},s[x+po][po]=w+1;
      |                                                                  ~^~~
skyscraper.cpp:38:71: warning: narrowing conversion of 'po' from 'int' to 'short unsigned int' [-Wnarrowing]
   38 |             if(x+po<n&&s[x+po].find(po)==s[x+po].end())arr[++b]={x+po,po},s[x+po][po]=w+1;
      |                                                                       ^~
skyscraper.cpp:21:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   21 |     scanf("%d %d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~~
skyscraper.cpp:23:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |         scanf("%d %d",&a[i],&p[i]);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7252 KB Output is correct
2 Correct 6 ms 7264 KB Output is correct
3 Correct 6 ms 7252 KB Output is correct
4 Correct 7 ms 7380 KB Output is correct
5 Correct 6 ms 7252 KB Output is correct
6 Correct 5 ms 7252 KB Output is correct
7 Correct 6 ms 7252 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7252 KB Output is correct
2 Correct 6 ms 7252 KB Output is correct
3 Correct 5 ms 7252 KB Output is correct
4 Correct 7 ms 7252 KB Output is correct
5 Correct 6 ms 7252 KB Output is correct
6 Correct 6 ms 7344 KB Output is correct
7 Correct 6 ms 7368 KB Output is correct
8 Correct 6 ms 7252 KB Output is correct
9 Correct 6 ms 7252 KB Output is correct
10 Correct 7 ms 7268 KB Output is correct
11 Correct 6 ms 7380 KB Output is correct
12 Correct 6 ms 7380 KB Output is correct
13 Correct 7 ms 7380 KB Output is correct
14 Correct 7 ms 7508 KB Output is correct
15 Correct 7 ms 7380 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 7252 KB Output is correct
2 Correct 7 ms 7252 KB Output is correct
3 Correct 6 ms 7256 KB Output is correct
4 Correct 7 ms 7252 KB Output is correct
5 Correct 6 ms 7252 KB Output is correct
6 Correct 6 ms 7364 KB Output is correct
7 Correct 6 ms 7252 KB Output is correct
8 Correct 6 ms 7320 KB Output is correct
9 Correct 5 ms 7252 KB Output is correct
10 Correct 6 ms 7252 KB Output is correct
11 Correct 6 ms 7380 KB Output is correct
12 Correct 7 ms 7380 KB Output is correct
13 Correct 7 ms 7336 KB Output is correct
14 Correct 7 ms 7584 KB Output is correct
15 Correct 6 ms 7380 KB Output is correct
16 Correct 6 ms 7328 KB Output is correct
17 Correct 6 ms 7508 KB Output is correct
18 Correct 6 ms 7380 KB Output is correct
19 Correct 6 ms 7380 KB Output is correct
20 Correct 7 ms 7380 KB Output is correct
21 Correct 6 ms 7380 KB Output is correct
22 Correct 6 ms 7380 KB Output is correct
23 Correct 6 ms 7508 KB Output is correct
24 Correct 7 ms 7508 KB Output is correct
25 Correct 7 ms 7380 KB Output is correct
26 Correct 6 ms 7380 KB Output is correct
27 Correct 6 ms 7380 KB Output is correct
28 Correct 9 ms 8020 KB Output is correct
29 Correct 11 ms 9812 KB Output is correct
30 Correct 8 ms 7892 KB Output is correct
31 Correct 9 ms 8844 KB Output is correct
32 Correct 8 ms 8092 KB Output is correct
33 Correct 15 ms 11476 KB Output is correct
34 Correct 13 ms 9524 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 7252 KB Output is correct
2 Correct 7 ms 7252 KB Output is correct
3 Correct 6 ms 7252 KB Output is correct
4 Correct 6 ms 7252 KB Output is correct
5 Correct 6 ms 7252 KB Output is correct
6 Correct 8 ms 7252 KB Output is correct
7 Correct 6 ms 7252 KB Output is correct
8 Correct 8 ms 7380 KB Output is correct
9 Correct 6 ms 7264 KB Output is correct
10 Correct 6 ms 7252 KB Output is correct
11 Correct 6 ms 7380 KB Output is correct
12 Correct 8 ms 7380 KB Output is correct
13 Correct 6 ms 7380 KB Output is correct
14 Correct 7 ms 7508 KB Output is correct
15 Correct 6 ms 7380 KB Output is correct
16 Correct 6 ms 7380 KB Output is correct
17 Correct 6 ms 7508 KB Output is correct
18 Correct 6 ms 7380 KB Output is correct
19 Correct 8 ms 7380 KB Output is correct
20 Correct 9 ms 7380 KB Output is correct
21 Correct 6 ms 7380 KB Output is correct
22 Correct 6 ms 7380 KB Output is correct
23 Correct 7 ms 7380 KB Output is correct
24 Correct 7 ms 7508 KB Output is correct
25 Correct 7 ms 7420 KB Output is correct
26 Correct 6 ms 7380 KB Output is correct
27 Correct 6 ms 7380 KB Output is correct
28 Correct 9 ms 8020 KB Output is correct
29 Correct 12 ms 9812 KB Output is correct
30 Correct 8 ms 7892 KB Output is correct
31 Correct 10 ms 8788 KB Output is correct
32 Correct 12 ms 8064 KB Output is correct
33 Correct 15 ms 11348 KB Output is correct
34 Correct 12 ms 9556 KB Output is correct
35 Correct 16 ms 8876 KB Output is correct
36 Correct 7 ms 7380 KB Output is correct
37 Correct 13 ms 8316 KB Output is correct
38 Correct 15 ms 8864 KB Output is correct
39 Correct 13 ms 7764 KB Output is correct
40 Correct 12 ms 7788 KB Output is correct
41 Correct 12 ms 7892 KB Output is correct
42 Correct 10 ms 7764 KB Output is correct
43 Correct 10 ms 7764 KB Output is correct
44 Correct 10 ms 7764 KB Output is correct
45 Correct 50 ms 22168 KB Output is correct
46 Correct 43 ms 17456 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 7252 KB Output is correct
2 Correct 6 ms 7252 KB Output is correct
3 Correct 5 ms 7252 KB Output is correct
4 Correct 6 ms 7252 KB Output is correct
5 Correct 6 ms 7368 KB Output is correct
6 Correct 5 ms 7252 KB Output is correct
7 Correct 6 ms 7252 KB Output is correct
8 Correct 6 ms 7296 KB Output is correct
9 Correct 6 ms 7252 KB Output is correct
10 Correct 7 ms 7252 KB Output is correct
11 Correct 6 ms 7380 KB Output is correct
12 Correct 6 ms 7380 KB Output is correct
13 Correct 6 ms 7380 KB Output is correct
14 Correct 7 ms 7508 KB Output is correct
15 Correct 8 ms 7380 KB Output is correct
16 Correct 7 ms 7324 KB Output is correct
17 Correct 7 ms 7508 KB Output is correct
18 Correct 7 ms 7380 KB Output is correct
19 Correct 6 ms 7380 KB Output is correct
20 Correct 6 ms 7380 KB Output is correct
21 Correct 6 ms 7380 KB Output is correct
22 Correct 7 ms 7380 KB Output is correct
23 Correct 6 ms 7508 KB Output is correct
24 Correct 7 ms 7508 KB Output is correct
25 Correct 6 ms 7380 KB Output is correct
26 Correct 6 ms 7420 KB Output is correct
27 Correct 7 ms 7380 KB Output is correct
28 Correct 9 ms 7988 KB Output is correct
29 Correct 11 ms 9812 KB Output is correct
30 Correct 8 ms 7892 KB Output is correct
31 Correct 9 ms 8788 KB Output is correct
32 Correct 9 ms 8108 KB Output is correct
33 Correct 14 ms 11348 KB Output is correct
34 Correct 11 ms 9556 KB Output is correct
35 Correct 15 ms 8916 KB Output is correct
36 Correct 9 ms 7452 KB Output is correct
37 Correct 12 ms 8404 KB Output is correct
38 Correct 18 ms 8824 KB Output is correct
39 Correct 12 ms 7764 KB Output is correct
40 Correct 12 ms 7764 KB Output is correct
41 Correct 13 ms 7892 KB Output is correct
42 Correct 13 ms 7812 KB Output is correct
43 Correct 13 ms 7764 KB Output is correct
44 Correct 10 ms 7768 KB Output is correct
45 Correct 50 ms 22116 KB Output is correct
46 Correct 33 ms 17356 KB Output is correct
47 Correct 13 ms 8020 KB Output is correct
48 Correct 12 ms 8020 KB Output is correct
49 Correct 12 ms 7956 KB Output is correct
50 Correct 11 ms 7812 KB Output is correct
51 Correct 23 ms 8860 KB Output is correct
52 Correct 25 ms 9216 KB Output is correct
53 Correct 16 ms 8148 KB Output is correct
54 Correct 6 ms 7380 KB Output is correct
55 Correct 7 ms 7380 KB Output is correct
56 Correct 15 ms 8532 KB Output is correct
57 Correct 7 ms 7380 KB Output is correct
58 Correct 16 ms 8916 KB Output is correct
59 Correct 14 ms 8308 KB Output is correct
60 Correct 14 ms 8404 KB Output is correct
61 Correct 14 ms 8320 KB Output is correct
62 Correct 112 ms 24368 KB Output is correct
63 Correct 518 ms 108964 KB Output is correct
64 Correct 690 ms 112460 KB Output is correct
65 Correct 770 ms 196072 KB Output is correct
66 Correct 891 ms 224872 KB Output is correct
67 Correct 463 ms 139636 KB Output is correct