Submission #45946

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
45946	2018-04-16T14:21:02 Z	TheDarkning	Jakarta Skyscrapers (APIO15_skyscraper)	C++14	57 / 100	1000 ms	8308 KB

skyscraper

/**
                  ▄█▀ ▀█▀ ▄▀▄ █▀ █▄█▄█ ▄▀▄ █▀ ▄█▀
                  <⇋⇋⇋⋛∰≓⊂(⌒,_ゝ⌒)⊃≓∰⋛⇋⇋⇋>

            ♔♕♖♗♘♙ ☜❷☞✪ ィℋ६ ≈ ᗫẵℜℵĬŊĞ ✪☜❷☞ ♚♛♜♝♞♟
            ♔♕♖♗♘♙                             ♚♛♜♝♞♟
                      ˙·٠•●♥ Ƹ̵̡Ӝ̵̨̄Ʒ ♥●•٠·˙

**/

#include <bits/stdc++.h>

#define sz(s) s.size()
#define pb push_back
#define fr first
#define sc second
#define int long long
#define mk make_pair
#define all(s) s.begin(), s.end()

using namespace std;

const int N = 2e5 + 5;
const int inf = 1e9 + 7;

vector < int > w[N];
priority_queue < pair < int, int > > q;

int n, m, p, b, x, s, cnt, to;
int d[N];

main()
{
   ios::sync_with_stdio(0);
   cin.tie(0);
   cout.tie(0);

   scanf("%lld%lld", &n, &m);

   for( int i = 1; i <= m; i++ )
   {
      scanf("%lld%lld", &p, &b);
      p++;

      if( i == 1 )
         s = p;
      if( i == 2 )
         x = p;

      w[ p ].pb( b );
   }
   for ( int i = 1; i <= n; i ++ )
   {
      sort( w[i].begin(), w[i].end() );
      w[i].erase( unique( w[i].begin(), w[i].end() ), w[i].end() );
   }
   for (int i = 1; i <= n; i ++)
      d[i] = inf;

   d[ s ] = 0;

   q.push( mk( d[s], s ) );

   while( !q.empty() )
   {

      int v = q.top().sc, cur = -q.top().fr;
      q.pop();

      if( cur > d[ v ] ) continue;

      if (v == x)
      {
         printf("%lld", d[v]);
         return 0;
      }
      for( auto l : w[v] )
      {
         for( int i = 1; i * l + v <= n; i++ )
         {
            to = v + l * i;
            if( d[ v ] + i < d[ to ] )
            {
               d[ to ] = d[ v ] + i;
               q.push( mk( -d[ to ], to ) );
            }
         }
         for( int i = 1; i * l <= v; i++ )
         {
            to = v - l * i;

            if( d[ v ] + i < d[ to ] )
            {
               d[ to ] = d[ v ] + i;
               q.push( mk( -d[ to ], to ) );
            }
         }
      }
   }
   if( d[ x ] == inf )
      puts("-1");
   else
      printf("%lld", d[x]);
}

Compilation message

skyscraper.cpp:32:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
 main()
      ^
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:38:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf("%lld%lld", &n, &m);
    ~~~~~^~~~~~~~~~~~~~~~~~~~
skyscraper.cpp:42:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
       scanf("%lld%lld", &p, &b);
       ~~~~~^~~~~~~~~~~~~~~~~~~~

Subtask #1

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	4984 KB	Output is correct
2	Correct	7 ms	5224 KB	Output is correct
3	Correct	6 ms	5268 KB	Output is correct
4	Correct	7 ms	5268 KB	Output is correct
5	Correct	7 ms	5268 KB	Output is correct
6	Correct	6 ms	5268 KB	Output is correct
7	Correct	6 ms	5268 KB	Output is correct

Subtask #2

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	5268 KB	Output is correct
2	Correct	7 ms	5268 KB	Output is correct
3	Correct	7 ms	5268 KB	Output is correct
4	Correct	7 ms	5300 KB	Output is correct
5	Correct	6 ms	5308 KB	Output is correct
6	Correct	7 ms	5308 KB	Output is correct
7	Correct	7 ms	5308 KB	Output is correct
8	Correct	6 ms	5308 KB	Output is correct
9	Correct	6 ms	5308 KB	Output is correct
10	Correct	7 ms	5308 KB	Output is correct
11	Correct	6 ms	5356 KB	Output is correct
12	Correct	6 ms	5356 KB	Output is correct
13	Correct	7 ms	5356 KB	Output is correct
14	Correct	7 ms	5356 KB	Output is correct
15	Correct	6 ms	5372 KB	Output is correct

Subtask #3

14.0 / 14.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	6 ms	5372 KB	Output is correct
2	Correct	6 ms	5372 KB	Output is correct
3	Correct	7 ms	5372 KB	Output is correct
4	Correct	5 ms	5372 KB	Output is correct
5	Correct	6 ms	5372 KB	Output is correct
6	Correct	5 ms	5372 KB	Output is correct
7	Correct	6 ms	5372 KB	Output is correct
8	Correct	7 ms	5372 KB	Output is correct
9	Correct	6 ms	5372 KB	Output is correct
10	Correct	6 ms	5372 KB	Output is correct
11	Correct	8 ms	5376 KB	Output is correct
12	Correct	8 ms	5376 KB	Output is correct
13	Correct	7 ms	5376 KB	Output is correct
14	Correct	9 ms	5376 KB	Output is correct
15	Correct	9 ms	5376 KB	Output is correct
16	Correct	8 ms	5376 KB	Output is correct
17	Correct	8 ms	5376 KB	Output is correct
18	Correct	6 ms	5376 KB	Output is correct
19	Correct	8 ms	5376 KB	Output is correct
20	Correct	11 ms	5596 KB	Output is correct
21	Correct	7 ms	5596 KB	Output is correct
22	Correct	7 ms	5596 KB	Output is correct
23	Correct	8 ms	5596 KB	Output is correct
24	Correct	9 ms	5596 KB	Output is correct
25	Correct	8 ms	5596 KB	Output is correct
26	Correct	7 ms	5596 KB	Output is correct
27	Correct	8 ms	5596 KB	Output is correct
28	Correct	8 ms	5596 KB	Output is correct
29	Correct	7 ms	5756 KB	Output is correct
30	Correct	8 ms	5756 KB	Output is correct
31	Correct	7 ms	5756 KB	Output is correct
32	Correct	7 ms	5756 KB	Output is correct
33	Correct	11 ms	5756 KB	Output is correct
34	Correct	9 ms	5756 KB	Output is correct

Subtask #4

21.0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	5756 KB	Output is correct
2	Correct	5 ms	5756 KB	Output is correct
3	Correct	5 ms	5756 KB	Output is correct
4	Correct	7 ms	5756 KB	Output is correct
5	Correct	6 ms	5756 KB	Output is correct
6	Correct	6 ms	5756 KB	Output is correct
7	Correct	7 ms	5756 KB	Output is correct
8	Correct	6 ms	5756 KB	Output is correct
9	Correct	7 ms	5756 KB	Output is correct
10	Correct	6 ms	5756 KB	Output is correct
11	Correct	7 ms	5756 KB	Output is correct
12	Correct	6 ms	5756 KB	Output is correct
13	Correct	6 ms	5756 KB	Output is correct
14	Correct	7 ms	5756 KB	Output is correct
15	Correct	6 ms	5756 KB	Output is correct
16	Correct	7 ms	5756 KB	Output is correct
17	Correct	8 ms	5756 KB	Output is correct
18	Correct	6 ms	5756 KB	Output is correct
19	Correct	6 ms	5756 KB	Output is correct
20	Correct	15 ms	5756 KB	Output is correct
21	Correct	8 ms	5756 KB	Output is correct
22	Correct	6 ms	5756 KB	Output is correct
23	Correct	8 ms	5756 KB	Output is correct
24	Correct	8 ms	5756 KB	Output is correct
25	Correct	6 ms	5756 KB	Output is correct
26	Correct	6 ms	5756 KB	Output is correct
27	Correct	6 ms	5756 KB	Output is correct
28	Correct	6 ms	5756 KB	Output is correct
29	Correct	10 ms	5756 KB	Output is correct
30	Correct	8 ms	5756 KB	Output is correct
31	Correct	7 ms	5756 KB	Output is correct
32	Correct	7 ms	5756 KB	Output is correct
33	Correct	9 ms	5756 KB	Output is correct
34	Correct	8 ms	5756 KB	Output is correct
35	Correct	14 ms	5756 KB	Output is correct
36	Correct	10 ms	5756 KB	Output is correct
37	Correct	14 ms	5756 KB	Output is correct
38	Correct	16 ms	5884 KB	Output is correct
39	Correct	16 ms	5884 KB	Output is correct
40	Correct	24 ms	6012 KB	Output is correct
41	Correct	16 ms	6012 KB	Output is correct
42	Correct	12 ms	6012 KB	Output is correct
43	Correct	12 ms	6012 KB	Output is correct
44	Correct	17 ms	6012 KB	Output is correct
45	Correct	17 ms	6012 KB	Output is correct
46	Correct	18 ms	6076 KB	Output is correct

Subtask #5

0 / 43.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	7 ms	6076 KB	Output is correct
2	Correct	7 ms	6076 KB	Output is correct
3	Correct	5 ms	6076 KB	Output is correct
4	Correct	6 ms	6076 KB	Output is correct
5	Correct	6 ms	6076 KB	Output is correct
6	Correct	5 ms	6076 KB	Output is correct
7	Correct	6 ms	6076 KB	Output is correct
8	Correct	6 ms	6076 KB	Output is correct
9	Correct	6 ms	6076 KB	Output is correct
10	Correct	6 ms	6076 KB	Output is correct
11	Correct	6 ms	6076 KB	Output is correct
12	Correct	6 ms	6076 KB	Output is correct
13	Correct	7 ms	6076 KB	Output is correct
14	Correct	8 ms	6076 KB	Output is correct
15	Correct	8 ms	6076 KB	Output is correct
16	Correct	7 ms	6076 KB	Output is correct
17	Correct	8 ms	6076 KB	Output is correct
18	Correct	7 ms	6076 KB	Output is correct
19	Correct	7 ms	6076 KB	Output is correct
20	Correct	14 ms	6076 KB	Output is correct
21	Correct	7 ms	6076 KB	Output is correct
22	Correct	6 ms	6076 KB	Output is correct
23	Correct	7 ms	6076 KB	Output is correct
24	Correct	9 ms	6076 KB	Output is correct
25	Correct	9 ms	6076 KB	Output is correct
26	Correct	8 ms	6076 KB	Output is correct
27	Correct	8 ms	6076 KB	Output is correct
28	Correct	9 ms	6076 KB	Output is correct
29	Correct	10 ms	6076 KB	Output is correct
30	Correct	8 ms	6076 KB	Output is correct
31	Correct	9 ms	6076 KB	Output is correct
32	Correct	8 ms	6076 KB	Output is correct
33	Correct	12 ms	6076 KB	Output is correct
34	Correct	8 ms	6076 KB	Output is correct
35	Correct	21 ms	6076 KB	Output is correct
36	Correct	7 ms	6076 KB	Output is correct
37	Correct	13 ms	6076 KB	Output is correct
38	Correct	19 ms	6076 KB	Output is correct
39	Correct	15 ms	6076 KB	Output is correct
40	Correct	15 ms	6076 KB	Output is correct
41	Correct	16 ms	6076 KB	Output is correct
42	Correct	12 ms	6076 KB	Output is correct
43	Correct	12 ms	6076 KB	Output is correct
44	Correct	16 ms	6076 KB	Output is correct
45	Correct	18 ms	6076 KB	Output is correct
46	Correct	16 ms	6076 KB	Output is correct
47	Correct	19 ms	7028 KB	Output is correct
48	Correct	20 ms	7028 KB	Output is correct
49	Correct	14 ms	7028 KB	Output is correct
50	Correct	12 ms	7028 KB	Output is correct
51	Correct	41 ms	8308 KB	Output is correct
52	Correct	43 ms	8308 KB	Output is correct
53	Correct	20 ms	8308 KB	Output is correct
54	Correct	10 ms	8308 KB	Output is correct
55	Correct	9 ms	8308 KB	Output is correct
56	Execution timed out	1020 ms	8308 KB	Time limit exceeded
57	Halted	0 ms	0 KB	-