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Submission #977919

# Submission time Handle Problem Language Result Execution time Memory
977919 2024-05-08T13:56:41 Z SmuggingSpun Jakarta Skyscrapers (APIO15_skyscraper) C++14
57 / 100
 1000 ms 40780 KB 
#include<bits/stdc++.h>
#define taskname "skyscraper"
using namespace std;
typedef long long ll;
template<class T>bool minimize(T& a, T b){
	if(a > b){
		a = b;
		return true;
	}
	return false;
}
const int lim = 3e4 + 5;
int n, m, b[lim], p[lim];
namespace sub1{
	void solve(){
		if(m == 2){
			return void(cout << (abs(b[0] - b[1]) % p[0] == 0 ? abs(b[0] - b[1]) / p[0] : -1));
		}
		int ans = (abs(b[0] - b[1]) % p[0] == 0 ? abs(b[0] - b[1]) / p[0] : INT_MAX);
		if(abs(b[0] - b[2]) % p[0] == 0 && abs(b[2] - b[1]) % p[2] == 0){
			minimize(ans, abs(b[0] - b[2]) / p[0] + abs(b[2] - b[1]) / p[2]);
		}
		cout << (ans == INT_MAX ? -1 : ans);
	}
}
namespace sub23{
	const int LIM = 2e3 + 5;
	int d[LIM];
	void solve(){
		priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>>pq;
		memset(d, 0x0f, sizeof(d));
		pq.emplace(d[0] = 0, 0);
		while(!pq.empty()){
			auto [w, u] = pq.top();
			pq.pop();
			if(w == d[u]){
				for(int v = 0; v < m; v++){
					if(abs(b[u] - b[v]) % p[u] == 0 && minimize(d[v], w + abs(b[u] - b[v]) / p[u])){
						pq.emplace(d[v], v);
					}
				}
			}
		}
		cout << (d[1] == d[LIM - 1] ? -1 : d[1]);
	}
}
namespace sub4{
	const int LIM = 2e3 + 5;
	int d[LIM];
	vector<int>pos[LIM];
	void solve(){
		priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>>pq;
		memset(d, 0x0f, sizeof(d));
		pq.emplace(d[b[0]] = 0, b[0]);
		for(int i = 0; i < m; i++){
			pos[b[i]].emplace_back(i);
		}
		while(!pq.empty()){
			auto [w, u] = pq.top();
			pq.pop();
			if(u == b[1]){
				return void(cout << w);
			}
			if(w == d[u]){
				for(int& index : pos[u]){
					for(int v = u - p[index], cnt = 1; v > -1; v -= p[index], cnt++){
						if(minimize(d[v], w + cnt)){
							pq.emplace(d[v], v);
						}
					}
					for(int v = u + p[index], cnt = 1; v < n; v += p[index], cnt++){
						if(minimize(d[v], w + cnt)){
							pq.emplace(d[v], v);
						}
					}
				}
			}
		}
		cout << -1;
	}
}
namespace sub5{
	const int SIZE = 200;
	vector<int>pos[lim];
	vector<vector<int>>e[SIZE];
	int d[lim];
	void solve(){
		for(int i = 1; i < SIZE; i++){
			e[i].resize(i);
		}
		for(int i = 0; i < m; i++){
			pos[b[i]].emplace_back(i);
			for(int j = 1; j < SIZE; j++){
				e[j][b[i] % j].emplace_back(b[i]);
			}
		}
		for(int i = 0; i < n; i++){
			sort(pos[i].begin(), pos[i].end());
			pos[i].resize(unique(pos[i].begin(), pos[i].end()) - pos[i].begin());
		}
		priority_queue<pair<int, int>, vector<pair<int, int>>, greater<pair<int, int>>>pq;
		memset(d, 0x0f, sizeof(d));
		pq.emplace(d[b[0]] = 0, b[0]);
		while(!pq.empty()){
			auto [w, u] = pq.top();
			pq.pop();
			if(u == b[1]){
				return void(cout << w);
			}
			if(w == d[u]){
				for(int& index : pos[u]){
					if(p[index] < SIZE){
						for(int& v : e[p[index]][u % p[index]]){
							if(minimize(d[v], w + abs(v - u) / p[index])){
								pq.emplace(d[v], v);
							}
						}
					}
					else{
						for(int v = u - p[index], cnt = 1; v > -1; v -= p[index], cnt++){
							if(minimize(d[v], w + cnt)){
								pq.emplace(d[v], v);
							}
						}
						for(int v = u + p[index], cnt = 1; v < n; v += p[index], cnt++){
							if(minimize(d[v], w + cnt)){
								pq.emplace(d[v], v);
							}
						}
					}
				}
			}
		}
		cout << -1;
	}
}
int main(){
	ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
	if(fopen(taskname".inp", "r")){
		freopen(taskname".inp", "r", stdin);
	}
	cin >> n >> m;
	for(int i = 0; i < m; i++){
		cin >> b[i] >> p[i];
	}
	if(n <= 10 && m <= 3){
		sub1::solve();
	}
	else if(n <= 2000 && m <= 2000){
		sub23::solve();
	}
	else if(n <= 2000){
		sub4::solve();
	}
	else{
		sub5::solve();
	}
}

Compilation message

skyscraper.cpp: In function 'void sub23::solve()':
skyscraper.cpp:34:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   34 |    auto [w, u] = pq.top();
      |         ^
skyscraper.cpp: In function 'void sub4::solve()':
skyscraper.cpp:59:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   59 |    auto [w, u] = pq.top();
      |         ^
skyscraper.cpp: In function 'void sub5::solve()':
skyscraper.cpp:105:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  105 |    auto [w, u] = pq.top();
      |         ^
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:140:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  140 |   freopen(taskname".inp", "r", stdin);
      |   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1112 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 1 ms 1116 KB Output is correct
4 Correct 1 ms 1116 KB Output is correct
5 Correct 1 ms 1116 KB Output is correct
6 Correct 1 ms 1116 KB Output is correct
7 Correct 1 ms 1116 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 1 ms 1116 KB Output is correct
4 Correct 1 ms 1112 KB Output is correct
5 Correct 1 ms 1116 KB Output is correct
6 Correct 1 ms 1112 KB Output is correct
7 Correct 1 ms 1116 KB Output is correct
8 Correct 1 ms 1112 KB Output is correct
9 Correct 1 ms 1116 KB Output is correct
10 Correct 2 ms 1116 KB Output is correct
11 Correct 21 ms 1320 KB Output is correct
12 Correct 19 ms 1112 KB Output is correct
13 Correct 20 ms 1276 KB Output is correct
14 Correct 21 ms 1116 KB Output is correct
15 Correct 20 ms 1372 KB Output is correct

Subtask #3
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1272 KB Output is correct
3 Correct 1 ms 1116 KB Output is correct
4 Correct 1 ms 1116 KB Output is correct
5 Correct 1 ms 1112 KB Output is correct
6 Correct 1 ms 1112 KB Output is correct
7 Correct 1 ms 1112 KB Output is correct
8 Correct 1 ms 1116 KB Output is correct
9 Correct 1 ms 1116 KB Output is correct
10 Correct 2 ms 1116 KB Output is correct
11 Correct 22 ms 1268 KB Output is correct
12 Correct 20 ms 1300 KB Output is correct
13 Correct 19 ms 1292 KB Output is correct
14 Correct 21 ms 1372 KB Output is correct
15 Correct 20 ms 1116 KB Output is correct
16 Correct 1 ms 1112 KB Output is correct
17 Correct 17 ms 1116 KB Output is correct
18 Correct 1 ms 1116 KB Output is correct
19 Correct 1 ms 1124 KB Output is correct
20 Correct 23 ms 1116 KB Output is correct
21 Correct 2 ms 1116 KB Output is correct
22 Correct 1 ms 1112 KB Output is correct
23 Correct 6 ms 1272 KB Output is correct
24 Correct 17 ms 1112 KB Output is correct
25 Correct 19 ms 1116 KB Output is correct
26 Correct 19 ms 1296 KB Output is correct
27 Correct 19 ms 1368 KB Output is correct
28 Correct 20 ms 1112 KB Output is correct
29 Correct 4 ms 1272 KB Output is correct
30 Correct 1 ms 1112 KB Output is correct
31 Correct 3 ms 1368 KB Output is correct
32 Correct 3 ms 1112 KB Output is correct
33 Correct 20 ms 1364 KB Output is correct
34 Correct 21 ms 1376 KB Output is correct

Subtask #4
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1116 KB Output is correct
3 Correct 1 ms 1116 KB Output is correct
4 Correct 1 ms 1116 KB Output is correct
5 Correct 1 ms 1116 KB Output is correct
6 Correct 1 ms 1112 KB Output is correct
7 Correct 1 ms 1116 KB Output is correct
8 Correct 1 ms 1272 KB Output is correct
9 Correct 1 ms 1112 KB Output is correct
10 Correct 2 ms 1116 KB Output is correct
11 Correct 21 ms 1316 KB Output is correct
12 Correct 19 ms 1284 KB Output is correct
13 Correct 19 ms 1116 KB Output is correct
14 Correct 20 ms 1372 KB Output is correct
15 Correct 21 ms 1380 KB Output is correct
16 Correct 2 ms 1116 KB Output is correct
17 Correct 16 ms 1116 KB Output is correct
18 Correct 1 ms 1048 KB Output is correct
19 Correct 2 ms 1112 KB Output is correct
20 Correct 24 ms 1272 KB Output is correct
21 Correct 1 ms 1116 KB Output is correct
22 Correct 1 ms 1284 KB Output is correct
23 Correct 6 ms 1268 KB Output is correct
24 Correct 17 ms 1288 KB Output is correct
25 Correct 19 ms 1112 KB Output is correct
26 Correct 19 ms 1112 KB Output is correct
27 Correct 19 ms 1288 KB Output is correct
28 Correct 20 ms 1112 KB Output is correct
29 Correct 4 ms 1112 KB Output is correct
30 Correct 1 ms 1112 KB Output is correct
31 Correct 2 ms 1112 KB Output is correct
32 Correct 2 ms 1116 KB Output is correct
33 Correct 21 ms 1112 KB Output is correct
34 Correct 21 ms 1528 KB Output is correct
35 Correct 7 ms 1628 KB Output is correct
36 Correct 2 ms 1116 KB Output is correct
37 Correct 6 ms 1624 KB Output is correct
38 Correct 8 ms 1784 KB Output is correct
39 Correct 6 ms 1628 KB Output is correct
40 Correct 6 ms 1628 KB Output is correct
41 Correct 5 ms 1880 KB Output is correct
42 Correct 4 ms 1628 KB Output is correct
43 Correct 6 ms 1624 KB Output is correct
44 Correct 154 ms 1624 KB Output is correct
45 Correct 7 ms 1880 KB Output is correct
46 Correct 6 ms 1880 KB Output is correct

Subtask #5
0 / 43.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 1116 KB Output is correct
2 Correct 1 ms 1112 KB Output is correct
3 Correct 1 ms 1116 KB Output is correct
4 Correct 1 ms 1116 KB Output is correct
5 Correct 1 ms 1124 KB Output is correct
6 Correct 1 ms 1116 KB Output is correct
7 Correct 1 ms 1112 KB Output is correct
8 Correct 1 ms 1116 KB Output is correct
9 Correct 1 ms 1116 KB Output is correct
10 Correct 2 ms 1112 KB Output is correct
11 Correct 21 ms 1372 KB Output is correct
12 Correct 19 ms 1116 KB Output is correct
13 Correct 19 ms 1288 KB Output is correct
14 Correct 21 ms 1372 KB Output is correct
15 Correct 21 ms 1368 KB Output is correct
16 Correct 1 ms 1112 KB Output is correct
17 Correct 16 ms 1128 KB Output is correct
18 Correct 1 ms 1284 KB Output is correct
19 Correct 1 ms 1116 KB Output is correct
20 Correct 24 ms 1276 KB Output is correct
21 Correct 1 ms 1112 KB Output is correct
22 Correct 1 ms 1268 KB Output is correct
23 Correct 5 ms 1116 KB Output is correct
24 Correct 17 ms 1288 KB Output is correct
25 Correct 18 ms 1116 KB Output is correct
26 Correct 20 ms 1292 KB Output is correct
27 Correct 20 ms 1112 KB Output is correct
28 Correct 19 ms 1116 KB Output is correct
29 Correct 4 ms 1116 KB Output is correct
30 Correct 1 ms 1268 KB Output is correct
31 Correct 2 ms 1116 KB Output is correct
32 Correct 2 ms 1116 KB Output is correct
33 Correct 20 ms 1368 KB Output is correct
34 Correct 20 ms 1372 KB Output is correct
35 Correct 5 ms 1624 KB Output is correct
36 Correct 2 ms 1116 KB Output is correct
37 Correct 4 ms 1628 KB Output is correct
38 Correct 5 ms 1628 KB Output is correct
39 Correct 6 ms 1624 KB Output is correct
40 Correct 5 ms 1628 KB Output is correct
41 Correct 6 ms 1628 KB Output is correct
42 Correct 6 ms 1628 KB Output is correct
43 Correct 4 ms 1624 KB Output is correct
44 Correct 152 ms 1692 KB Output is correct
45 Correct 6 ms 1884 KB Output is correct
46 Correct 6 ms 1884 KB Output is correct
47 Correct 110 ms 33676 KB Output is correct
48 Correct 99 ms 30872 KB Output is correct
49 Correct 93 ms 29012 KB Output is correct
50 Correct 63 ms 20936 KB Output is correct
51 Correct 149 ms 40652 KB Output is correct
52 Correct 140 ms 40632 KB Output is correct
53 Correct 113 ms 40308 KB Output is correct
54 Correct 1 ms 1624 KB Output is correct
55 Correct 1 ms 1632 KB Output is correct
56 Execution timed out 1076 ms 40780 KB Time limit exceeded
57 Halted 0 ms 0 KB -