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답안 #399046

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
399046 2021-05-05T07:46:47 Z tengiz05 Jakarta Skyscrapers (APIO15_skyscraper) C++17
100 / 100
 541 ms 113864 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;
vector<bool> vis[N];
int len[N];
vector<int> who_is_here[N];
void solve(int test_case){
	int i, j;
	for(i=0;i<N;i++)vis[i].assign(N,0);
	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;
		}
	}
	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:26:6: warning: 'start' may be used uninitialized in this function [-Wmaybe-uninitialized]
   26 |  int start;
      |      ^~~~~

Subtask #1
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 57 ms 112488 KB Output is correct
2 Correct 54 ms 112440 KB Output is correct
3 Correct 55 ms 112460 KB Output is correct
4 Correct 54 ms 112544 KB Output is correct
5 Correct 53 ms 112452 KB Output is correct
6 Correct 53 ms 112508 KB Output is correct
7 Correct 54 ms 112464 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 53 ms 112536 KB Output is correct
2 Correct 51 ms 112500 KB Output is correct
3 Correct 57 ms 112472 KB Output is correct
4 Correct 54 ms 112488 KB Output is correct
5 Correct 54 ms 112580 KB Output is correct
6 Correct 54 ms 112476 KB Output is correct
7 Correct 54 ms 112524 KB Output is correct
8 Correct 57 ms 112448 KB Output is correct
9 Correct 55 ms 112528 KB Output is correct
10 Correct 52 ms 112552 KB Output is correct
11 Correct 52 ms 112476 KB Output is correct
12 Correct 54 ms 112508 KB Output is correct
13 Correct 56 ms 112516 KB Output is correct
14 Correct 55 ms 112580 KB Output is correct
15 Correct 55 ms 112556 KB Output is correct

Subtask #3
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 53 ms 112520 KB Output is correct
2 Correct 54 ms 112500 KB Output is correct
3 Correct 54 ms 112520 KB Output is correct
4 Correct 53 ms 112444 KB Output is correct
5 Correct 53 ms 112432 KB Output is correct
6 Correct 53 ms 112488 KB Output is correct
7 Correct 57 ms 112508 KB Output is correct
8 Correct 53 ms 112520 KB Output is correct
9 Correct 53 ms 112488 KB Output is correct
10 Correct 53 ms 112500 KB Output is correct
11 Correct 52 ms 112532 KB Output is correct
12 Correct 53 ms 112568 KB Output is correct
13 Correct 57 ms 112568 KB Output is correct
14 Correct 56 ms 112580 KB Output is correct
15 Correct 51 ms 112608 KB Output is correct
16 Correct 55 ms 112488 KB Output is correct
17 Correct 54 ms 112504 KB Output is correct
18 Correct 53 ms 112580 KB Output is correct
19 Correct 53 ms 112500 KB Output is correct
20 Correct 56 ms 112560 KB Output is correct
21 Correct 54 ms 112508 KB Output is correct
22 Correct 54 ms 112580 KB Output is correct
23 Correct 53 ms 112504 KB Output is correct
24 Correct 55 ms 112552 KB Output is correct
25 Correct 54 ms 112552 KB Output is correct
26 Correct 53 ms 112488 KB Output is correct
27 Correct 52 ms 112512 KB Output is correct
28 Correct 63 ms 112580 KB Output is correct
29 Correct 55 ms 112476 KB Output is correct
30 Correct 54 ms 112556 KB Output is correct
31 Correct 53 ms 112544 KB Output is correct
32 Correct 52 ms 112548 KB Output is correct
33 Correct 63 ms 112656 KB Output is correct
34 Correct 55 ms 112564 KB Output is correct

Subtask #4
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 52 ms 112480 KB Output is correct
2 Correct 53 ms 112444 KB Output is correct
3 Correct 53 ms 112452 KB Output is correct
4 Correct 53 ms 112464 KB Output is correct
5 Correct 56 ms 112560 KB Output is correct
6 Correct 54 ms 112512 KB Output is correct
7 Correct 53 ms 112452 KB Output is correct
8 Correct 53 ms 112544 KB Output is correct
9 Correct 52 ms 112552 KB Output is correct
10 Correct 53 ms 112488 KB Output is correct
11 Correct 53 ms 112540 KB Output is correct
12 Correct 55 ms 112576 KB Output is correct
13 Correct 53 ms 112540 KB Output is correct
14 Correct 55 ms 112496 KB Output is correct
15 Correct 64 ms 112512 KB Output is correct
16 Correct 53 ms 112576 KB Output is correct
17 Correct 56 ms 112524 KB Output is correct
18 Correct 54 ms 112544 KB Output is correct
19 Correct 55 ms 112528 KB Output is correct
20 Correct 54 ms 112612 KB Output is correct
21 Correct 54 ms 112500 KB Output is correct
22 Correct 54 ms 112552 KB Output is correct
23 Correct 54 ms 112580 KB Output is correct
24 Correct 53 ms 112584 KB Output is correct
25 Correct 55 ms 112560 KB Output is correct
26 Correct 54 ms 112568 KB Output is correct
27 Correct 52 ms 112584 KB Output is correct
28 Correct 54 ms 112612 KB Output is correct
29 Correct 57 ms 112536 KB Output is correct
30 Correct 55 ms 112452 KB Output is correct
31 Correct 54 ms 112512 KB Output is correct
32 Correct 55 ms 112580 KB Output is correct
33 Correct 59 ms 112588 KB Output is correct
34 Correct 57 ms 112532 KB Output is correct
35 Correct 68 ms 113260 KB Output is correct
36 Correct 55 ms 112544 KB Output is correct
37 Correct 61 ms 113084 KB Output is correct
38 Correct 63 ms 113644 KB Output is correct
39 Correct 60 ms 113168 KB Output is correct
40 Correct 59 ms 113176 KB Output is correct
41 Correct 60 ms 113148 KB Output is correct
42 Correct 59 ms 113092 KB Output is correct
43 Correct 58 ms 113092 KB Output is correct
44 Correct 60 ms 113068 KB Output is correct
45 Correct 81 ms 113464 KB Output is correct
46 Correct 67 ms 113336 KB Output is correct

Subtask #5
43.0 / 43.0

# 결과 실행 시간 메모리 Grader output
1 Correct 52 ms 112532 KB Output is correct
2 Correct 52 ms 112548 KB Output is correct
3 Correct 53 ms 112532 KB Output is correct
4 Correct 52 ms 112452 KB Output is correct
5 Correct 54 ms 112504 KB Output is correct
6 Correct 54 ms 112516 KB Output is correct
7 Correct 53 ms 112548 KB Output is correct
8 Correct 52 ms 112460 KB Output is correct
9 Correct 52 ms 112452 KB Output is correct
10 Correct 55 ms 112564 KB Output is correct
11 Correct 57 ms 112512 KB Output is correct
12 Correct 54 ms 112480 KB Output is correct
13 Correct 52 ms 112484 KB Output is correct
14 Correct 54 ms 112588 KB Output is correct
15 Correct 53 ms 112544 KB Output is correct
16 Correct 53 ms 112580 KB Output is correct
17 Correct 54 ms 112556 KB Output is correct
18 Correct 53 ms 112564 KB Output is correct
19 Correct 54 ms 112476 KB Output is correct
20 Correct 54 ms 112580 KB Output is correct
21 Correct 54 ms 112516 KB Output is correct
22 Correct 52 ms 112488 KB Output is correct
23 Correct 53 ms 112572 KB Output is correct
24 Correct 54 ms 112580 KB Output is correct
25 Correct 55 ms 112592 KB Output is correct
26 Correct 52 ms 112492 KB Output is correct
27 Correct 53 ms 112580 KB Output is correct
28 Correct 54 ms 112580 KB Output is correct
29 Correct 55 ms 112544 KB Output is correct
30 Correct 54 ms 112452 KB Output is correct
31 Correct 55 ms 112464 KB Output is correct
32 Correct 54 ms 112452 KB Output is correct
33 Correct 56 ms 112552 KB Output is correct
34 Correct 56 ms 112580 KB Output is correct
35 Correct 62 ms 113220 KB Output is correct
36 Correct 55 ms 112560 KB Output is correct
37 Correct 59 ms 113072 KB Output is correct
38 Correct 63 ms 113416 KB Output is correct
39 Correct 60 ms 113156 KB Output is correct
40 Correct 59 ms 113092 KB Output is correct
41 Correct 63 ms 113144 KB Output is correct
42 Correct 57 ms 113100 KB Output is correct
43 Correct 57 ms 113124 KB Output is correct
44 Correct 60 ms 113040 KB Output is correct
45 Correct 76 ms 113460 KB Output is correct
46 Correct 68 ms 113336 KB Output is correct
47 Correct 62 ms 113304 KB Output is correct
48 Correct 59 ms 113220 KB Output is correct
49 Correct 63 ms 113252 KB Output is correct
50 Correct 59 ms 113120 KB Output is correct
51 Correct 68 ms 113572 KB Output is correct
52 Correct 70 ms 113616 KB Output is correct
53 Correct 63 ms 113504 KB Output is correct
54 Correct 54 ms 112456 KB Output is correct
55 Correct 54 ms 112452 KB Output is correct
56 Correct 64 ms 113864 KB Output is correct
57 Correct 55 ms 112624 KB Output is correct
58 Correct 66 ms 112932 KB Output is correct
59 Correct 62 ms 113124 KB Output is correct
60 Correct 63 ms 113088 KB Output is correct
61 Correct 62 ms 113124 KB Output is correct
62 Correct 96 ms 113832 KB Output is correct
63 Correct 229 ms 113568 KB Output is correct
64 Correct 264 ms 113328 KB Output is correct
65 Correct 339 ms 113348 KB Output is correct
66 Correct 541 ms 113448 KB Output is correct
67 Correct 301 ms 113456 KB Output is correct