oj.uz

Submission #398435

# Submission time Handle Problem Language Result Execution time Memory
398435 2021-05-04T09:20:34 Z tengiz05 Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 526 ms 112196 KB 
#include <bits/stdc++.h>
using namespace std;
inline long long msb(long long val){return 63-__builtin_clzll(val);}
inline int msb(int val){return 31-__builtin_clz(val);}
//~ #define int long long
#define FASTIO ios_base::sync_with_stdio(false); cin.tie(NULL);
#define all(x) (x).begin(), (x).end()
#define pb push_back
#define pii pair<int, int>
#define ff first
#define ss second
#define PI acos(-1)
#define ld long double
#define emplace_back push_back
template<class T> bool chmin(T& a, const T& b) {return a>b? a=b, true:false;}
template<class T> bool chmax(T& a, const T& b) {return a<b? a=b, true:false;}
const int mod = 1e9+7, N = 30000, M = 30000;
int n, m, k;
bitset<N> vis[N];
int len[N];
vector<int> who_is_here[N];
void solve(int test_case){
	int i, j;
	cin >> n >> m;
	int start;
	for(i=0;i<m;i++){
		int pos;
		cin >> pos >> len[i];
		if(i){
			who_is_here[pos].pb(i);
		}else {
			start = pos;
		}
	}
	//~ priority_queue<tuple<int,int,int>,vector<tuple<int,int,int>>, greater<tuple<int,int,int>>> q;
	deque<tuple<int,int,int>> q;
	q.emplace_back({0,start,0});
	vis[start][len[0]] = 1;
	while(!q.empty()){
		auto [dist, pos, i] = q.front(); q.pop_front();
		if(i == 1){
			cout << dist << '\n';
			return;
		}
		while(who_is_here[pos].size()){
			auto x = who_is_here[pos].back();
			who_is_here[pos].pop_back();
			if(x == 1){
				cout << dist << '\n';
				return;
			}
			if(vis[pos][len[x]])continue;
			vis[pos][len[x]] = 1;
			q.push_front({dist,pos,x});
		}
		if(pos - len[i] >=0 && !vis[pos-len[i]][len[i]]){
			vis[pos-len[i]][len[i]] = 1;
			q.push_back({dist+1,pos-len[i],i});
		}
		if(pos + len[i] < n && !vis[pos+len[i]][len[i]]){
			vis[pos+len[i]][len[i]] = 1;
			q.push_back({dist+1,pos+len[i],i});
		}
	}
	cout << -1 << '\n';
	return;
}

signed main(){
	FASTIO;
//~ #define MULTITEST 1
#if MULTITEST
	int _T;
	cin >> _T;
	for(int T_CASE = 1; T_CASE <= _T; T_CASE++)
		solve(T_CASE);
#else
	solve(1);
#endif
	return 0;
}

Compilation message

skyscraper.cpp: In function 'void solve(int)':
skyscraper.cpp:23:9: warning: unused variable 'j' [-Wunused-variable]
   23 |  int i, j;
      |         ^
skyscraper.cpp:25:6: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
   25 |  int start;
      |      ^~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 976 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1228 KB Output is correct
11 Correct 2 ms 1228 KB Output is correct
12 Correct 1 ms 1356 KB Output is correct
13 Correct 1 ms 1356 KB Output is correct
14 Correct 2 ms 1360 KB Output is correct
15 Correct 2 ms 1356 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 2 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 2 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 1 ms 1228 KB Output is correct
11 Correct 1 ms 1228 KB Output is correct
12 Correct 1 ms 1228 KB Output is correct
13 Correct 2 ms 1356 KB Output is correct
14 Correct 2 ms 1356 KB Output is correct
15 Correct 2 ms 1356 KB Output is correct
16 Correct 1 ms 972 KB Output is correct
17 Correct 3 ms 3660 KB Output is correct
18 Correct 1 ms 972 KB Output is correct
19 Correct 1 ms 1100 KB Output is correct
20 Correct 6 ms 8396 KB Output is correct
21 Correct 1 ms 972 KB Output is correct
22 Correct 1 ms 972 KB Output is correct
23 Correct 5 ms 6348 KB Output is correct
24 Correct 6 ms 7500 KB Output is correct
25 Correct 2 ms 2380 KB Output is correct
26 Correct 6 ms 7244 KB Output is correct
27 Correct 6 ms 7628 KB Output is correct
28 Correct 7 ms 8352 KB Output is correct
29 Correct 8 ms 8268 KB Output is correct
30 Correct 7 ms 8372 KB Output is correct
31 Correct 7 ms 8268 KB Output is correct
32 Correct 8 ms 8268 KB Output is correct
33 Correct 10 ms 8396 KB Output is correct
34 Correct 8 ms 8396 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 972 KB Output is correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 2 ms 1228 KB Output is correct
11 Correct 2 ms 1228 KB Output is correct
12 Correct 1 ms 1228 KB Output is correct
13 Correct 2 ms 1360 KB Output is correct
14 Correct 2 ms 1356 KB Output is correct
15 Correct 2 ms 1356 KB Output is correct
16 Correct 2 ms 972 KB Output is correct
17 Correct 3 ms 3660 KB Output is correct
18 Correct 1 ms 972 KB Output is correct
19 Correct 1 ms 1100 KB Output is correct
20 Correct 6 ms 8396 KB Output is correct
21 Correct 1 ms 972 KB Output is correct
22 Correct 1 ms 1044 KB Output is correct
23 Correct 8 ms 6348 KB Output is correct
24 Correct 6 ms 7500 KB Output is correct
25 Correct 3 ms 2380 KB Output is correct
26 Correct 5 ms 7244 KB Output is correct
27 Correct 6 ms 7628 KB Output is correct
28 Correct 7 ms 8396 KB Output is correct
29 Correct 8 ms 8272 KB Output is correct
30 Correct 6 ms 8268 KB Output is correct
31 Correct 7 ms 8268 KB Output is correct
32 Correct 6 ms 8308 KB Output is correct
33 Correct 9 ms 8400 KB Output is correct
34 Correct 9 ms 8396 KB Output is correct
35 Correct 11 ms 6732 KB Output is correct
36 Correct 3 ms 3020 KB Output is correct
37 Correct 11 ms 8524 KB Output is correct
38 Correct 14 ms 8908 KB Output is correct
39 Correct 10 ms 1740 KB Output is correct
40 Correct 9 ms 3936 KB Output is correct
41 Correct 12 ms 8140 KB Output is correct
42 Correct 11 ms 7616 KB Output is correct
43 Correct 10 ms 8052 KB Output is correct
44 Correct 10 ms 8652 KB Output is correct
45 Correct 26 ms 9048 KB Output is correct
46 Correct 19 ms 9164 KB Output is correct

Subtask #5
43.0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 972 KB Output is correct
2 Correct 1 ms 972 KB Output is correct
3 Correct 1 ms 972 KB Output is correct
4 Correct 1 ms 972 KB Output is correct
5 Correct 1 ms 972 KB Output is correct
6 Correct 1 ms 972 KB Output is correct
7 Correct 1 ms 976 KB Output is correct
8 Correct 1 ms 972 KB Output is correct
9 Correct 1 ms 1100 KB Output is correct
10 Correct 2 ms 1228 KB Output is correct
11 Correct 2 ms 1228 KB Output is correct
12 Correct 1 ms 1356 KB Output is correct
13 Correct 1 ms 1356 KB Output is correct
14 Correct 2 ms 1356 KB Output is correct
15 Correct 2 ms 1356 KB Output is correct
16 Correct 2 ms 972 KB Output is correct
17 Correct 3 ms 3660 KB Output is correct
18 Correct 1 ms 972 KB Output is correct
19 Correct 1 ms 1100 KB Output is correct
20 Correct 6 ms 8396 KB Output is correct
21 Correct 1 ms 972 KB Output is correct
22 Correct 1 ms 972 KB Output is correct
23 Correct 5 ms 6348 KB Output is correct
24 Correct 7 ms 7500 KB Output is correct
25 Correct 3 ms 2380 KB Output is correct
26 Correct 5 ms 7244 KB Output is correct
27 Correct 6 ms 7628 KB Output is correct
28 Correct 7 ms 8396 KB Output is correct
29 Correct 7 ms 8268 KB Output is correct
30 Correct 6 ms 8268 KB Output is correct
31 Correct 6 ms 8268 KB Output is correct
32 Correct 7 ms 8268 KB Output is correct
33 Correct 10 ms 8396 KB Output is correct
34 Correct 8 ms 8396 KB Output is correct
35 Correct 13 ms 6732 KB Output is correct
36 Correct 4 ms 3020 KB Output is correct
37 Correct 10 ms 8520 KB Output is correct
38 Correct 14 ms 8908 KB Output is correct
39 Correct 8 ms 1776 KB Output is correct
40 Correct 9 ms 4044 KB Output is correct
41 Correct 12 ms 8168 KB Output is correct
42 Correct 10 ms 7628 KB Output is correct
43 Correct 10 ms 8012 KB Output is correct
44 Correct 10 ms 8652 KB Output is correct
45 Correct 26 ms 9036 KB Output is correct
46 Correct 18 ms 8960 KB Output is correct
47 Correct 28 ms 31688 KB Output is correct
48 Correct 8 ms 1508 KB Output is correct
49 Correct 7 ms 1484 KB Output is correct
50 Correct 6 ms 1356 KB Output is correct
51 Correct 69 ms 86032 KB Output is correct
52 Correct 84 ms 93140 KB Output is correct
53 Correct 20 ms 18512 KB Output is correct
54 Correct 39 ms 61336 KB Output is correct
55 Correct 46 ms 77764 KB Output is correct
56 Correct 72 ms 112108 KB Output is correct
57 Correct 3 ms 2636 KB Output is correct
58 Correct 84 ms 111380 KB Output is correct
59 Correct 70 ms 103648 KB Output is correct
60 Correct 71 ms 103696 KB Output is correct
61 Correct 67 ms 98512 KB Output is correct
62 Correct 115 ms 112196 KB Output is correct
63 Correct 221 ms 111652 KB Output is correct
64 Correct 257 ms 111688 KB Output is correct
65 Correct 319 ms 111752 KB Output is correct
66 Correct 526 ms 111812 KB Output is correct
67 Correct 295 ms 111764 KB Output is correct