oj.uz

Submission #977924

# Submission time Handle Problem Language Result Execution time Memory
977924 2024-05-08T14:00:59 Z SmuggingSpun Jakarta Skyscrapers (APIO15_skyscraper) C++14
57 / 100
 1000 ms 11472 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 = 50;
	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 < SIZE; i++){
			for(int j = 0; j < i; j++){
				sort(e[i][j].begin(), e[i][j].end());
				e[i][j].resize(unique(e[i][j].begin(), e[i][j].end()) - e[i][j].begin());
			}
		}
		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){
		sub5::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:111:9: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
  111 |    auto [w, u] = pq.top();
      |         ^
skyscraper.cpp: In function 'int main()':
skyscraper.cpp:146:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  146 |   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 1112 KB Output is correct
6 Correct 1 ms 1112 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 1112 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 1116 KB Output is correct
9 Correct 1 ms 1112 KB Output is correct
10 Correct 2 ms 1112 KB Output is correct
11 Correct 20 ms 1312 KB Output is correct
12 Correct 18 ms 1252 KB Output is correct
13 Correct 18 ms 1116 KB Output is correct
14 Correct 20 ms 1364 KB Output is correct
15 Correct 20 ms 1112 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 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 1116 KB Output is correct
9 Correct 1 ms 1116 KB Output is correct
10 Correct 2 ms 1252 KB Output is correct
11 Correct 20 ms 1308 KB Output is correct
12 Correct 18 ms 1116 KB Output is correct
13 Correct 18 ms 1116 KB Output is correct
14 Correct 20 ms 1116 KB Output is correct
15 Correct 20 ms 1368 KB Output is correct
16 Correct 1 ms 1116 KB Output is correct
17 Correct 16 ms 1312 KB Output is correct
18 Correct 1 ms 1116 KB Output is correct
19 Correct 1 ms 1116 KB Output is correct
20 Correct 23 ms 1280 KB Output is correct
21 Correct 1 ms 1116 KB Output is correct
22 Correct 1 ms 1116 KB Output is correct
23 Correct 5 ms 1112 KB Output is correct
24 Correct 17 ms 1112 KB Output is correct
25 Correct 18 ms 1112 KB Output is correct
26 Correct 20 ms 1368 KB Output is correct
27 Correct 18 ms 1116 KB Output is correct
28 Correct 19 ms 1116 KB Output is correct
29 Correct 3 ms 1116 KB Output is correct
30 Correct 1 ms 1116 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 1360 KB Output is correct
34 Correct 20 ms 1112 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 1036 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 1116 KB Output is correct
7 Correct 1 ms 1116 KB Output is correct
8 Correct 1 ms 1116 KB Output is correct
9 Correct 1 ms 1116 KB Output is correct
10 Correct 1 ms 1116 KB Output is correct
11 Correct 22 ms 1312 KB Output is correct
12 Correct 18 ms 1116 KB Output is correct
13 Correct 18 ms 1116 KB Output is correct
14 Correct 20 ms 1116 KB Output is correct
15 Correct 20 ms 1116 KB Output is correct
16 Correct 1 ms 1116 KB Output is correct
17 Correct 15 ms 1116 KB Output is correct
18 Correct 1 ms 1116 KB Output is correct
19 Correct 1 ms 1116 KB Output is correct
20 Correct 23 ms 1116 KB Output is correct
21 Correct 1 ms 1116 KB Output is correct
22 Correct 1 ms 1116 KB Output is correct
23 Correct 5 ms 1116 KB Output is correct
24 Correct 17 ms 1280 KB Output is correct
25 Correct 18 ms 1112 KB Output is correct
26 Correct 19 ms 1288 KB Output is correct
27 Correct 19 ms 1368 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 1116 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 1116 KB Output is correct
34 Correct 21 ms 1360 KB Output is correct
35 Correct 58 ms 9308 KB Output is correct
36 Correct 11 ms 2904 KB Output is correct
37 Correct 46 ms 7420 KB Output is correct
38 Correct 82 ms 10396 KB Output is correct
39 Correct 68 ms 10324 KB Output is correct
40 Correct 72 ms 10324 KB Output is correct
41 Correct 68 ms 10460 KB Output is correct
42 Correct 31 ms 8216 KB Output is correct
43 Correct 34 ms 8160 KB Output is correct
44 Correct 370 ms 8564 KB Output is correct
45 Correct 49 ms 10320 KB Output is correct
46 Correct 49 ms 10328 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 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 1112 KB Output is correct
6 Correct 1 ms 1116 KB Output is correct
7 Correct 1 ms 1204 KB Output is correct
8 Correct 1 ms 1116 KB Output is correct
9 Correct 1 ms 1116 KB Output is correct
10 Correct 1 ms 1116 KB Output is correct
11 Correct 20 ms 1116 KB Output is correct
12 Correct 18 ms 1112 KB Output is correct
13 Correct 18 ms 1112 KB Output is correct
14 Correct 20 ms 1116 KB Output is correct
15 Correct 20 ms 1360 KB Output is correct
16 Correct 1 ms 1112 KB Output is correct
17 Correct 16 ms 1116 KB Output is correct
18 Correct 1 ms 1160 KB Output is correct
19 Correct 1 ms 1116 KB Output is correct
20 Correct 23 ms 1260 KB Output is correct
21 Correct 1 ms 1116 KB Output is correct
22 Correct 1 ms 1112 KB Output is correct
23 Correct 5 ms 1256 KB Output is correct
24 Correct 17 ms 1112 KB Output is correct
25 Correct 19 ms 1308 KB Output is correct
26 Correct 19 ms 1368 KB Output is correct
27 Correct 19 ms 1116 KB Output is correct
28 Correct 19 ms 1112 KB Output is correct
29 Correct 3 ms 1116 KB Output is correct
30 Correct 1 ms 1112 KB Output is correct
31 Correct 2 ms 1264 KB Output is correct
32 Correct 2 ms 1112 KB Output is correct
33 Correct 20 ms 1112 KB Output is correct
34 Correct 20 ms 1112 KB Output is correct
35 Correct 57 ms 9620 KB Output is correct
36 Correct 12 ms 2908 KB Output is correct
37 Correct 46 ms 7508 KB Output is correct
38 Correct 69 ms 10404 KB Output is correct
39 Correct 67 ms 10332 KB Output is correct
40 Correct 68 ms 10296 KB Output is correct
41 Correct 69 ms 10460 KB Output is correct
42 Correct 31 ms 8216 KB Output is correct
43 Correct 38 ms 8212 KB Output is correct
44 Correct 370 ms 8528 KB Output is correct
45 Correct 48 ms 10576 KB Output is correct
46 Correct 49 ms 10328 KB Output is correct
47 Correct 76 ms 9828 KB Output is correct
48 Correct 63 ms 8672 KB Output is correct
49 Correct 56 ms 8024 KB Output is correct
50 Correct 38 ms 6156 KB Output is correct
51 Correct 89 ms 11472 KB Output is correct
52 Correct 91 ms 11396 KB Output is correct
53 Correct 84 ms 11052 KB Output is correct
54 Correct 1 ms 1116 KB Output is correct
55 Correct 1 ms 1372 KB Output is correct
56 Execution timed out 1085 ms 11384 KB Time limit exceeded
57 Halted 0 ms 0 KB -