oj.uz

Submission #696634

# Submission time Handle Problem Language Result Execution time Memory
696634 2023-02-07T02:18:42 Z LeDaiKing Autobus (COCI22_autobus) C++14
70 / 70
 327 ms 2300 KB 
#pragma GCC optimize("Ofast")
#pragma GCC target("avx,avx2,fma")
#include<bits/stdc++.h>

using namespace std;

#define NMOD 3
#define ll long long
#define fi first
#define se second
#define pb push_back
#define log 17
#define mask(i) (1ll << (i))
#define setp(x) setprecision(x)
#define ALL(v) v.begin(), v.end()
#define ck(n, i) (((n) >> (i)) & 1) 
#define getbit(x) __builtin_popcount(x)

const double PI = acos(-1);
const long long MOD = 1e9 + 7;
const long long MOD1 = 998244353;
const long long MODo = 123456789;

const int oo = 1e9;
const long long oo15 = 1e15, oo18 = 1e18+3, oooo = 922372036854775807;

mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());

struct DATA
{
	int st, tt, len;

	bool operator < (const DATA &o) const
	{
		return len > o.len;
	}
};

int dist[72][72][72], low[77][77];
vector<pair<int,int>> a[72];

void solve() 
{
	int n, m;

	cin >> n >> m;

	for (int i = 1; i <= n; i++)
	for (int j = 1; j <= n; j++)
	{
		low[i][j] = oo;
		for (int e = 0; e <= n; e++)
		dist[i][j][e] = oo;
	}
	for (int i = 1; i <= m; i++)
	{
		int u, v, t;
		cin >> u >> v >> t;
		low[u][v] = min(low[u][v], t);
	}

	for (int i = 1; i <= n; i++)
	for (int j = 1; j <= n; j++)
	if (low[i][j] < oo)
	{
		a[i].pb({j, low[i][j]});
	}


	int k, q;
	cin >> k >> q;
	k = min(k, n);

	for (int st = 1; st <= n; st++)
	{
		priority_queue<DATA> qe;
		dist[st][st][0] = 0;
		qe.push({st, 0, 0});
		// cout << st << endl;
		while(!qe.empty())
		{
			int u = qe.top().st, tt = qe.top().tt, len = qe.top().len; qe.pop();
			// cout << u << " " << tt << " " << len << endl;
			if (dist[st][u][tt] != len || tt == k) continue;

			for (auto v : a[u])
			if (dist[st][v.fi][tt + 1] > len + v.se)
			{
				dist[st][v.fi][tt + 1] = len + v.se;
				if (tt + 1 < k)
				qe.push({v.fi, tt + 1, dist[st][v.fi][tt + 1]});
			}
		}
	}

	while(q--)
	{
		int u, v;
		cin >> u >> v;
		int ans = oo;
		for (int i = 0; i <= k; i++) ans = min(ans, dist[u][v][i]);

		if (ans == oo) cout << "-1\n"; else cout << ans << "\n";
	}

}


int main() 
{   
   
    ios_base::sync_with_stdio(0);
    cin.tie(0); cout.tie(0);  
    int testcase = 1;
    //cin >> testcase;
    while(testcase--)
        solve();
}

Subtask #1
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 1748 KB Output is correct
2 Correct 2 ms 1748 KB Output is correct
3 Correct 3 ms 1748 KB Output is correct
4 Correct 2 ms 1748 KB Output is correct
5 Correct 3 ms 1804 KB Output is correct
6 Correct 4 ms 1748 KB Output is correct
7 Correct 6 ms 1820 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 25 ms 1748 KB Output is correct
8 Correct 77 ms 1876 KB Output is correct
9 Correct 4 ms 1748 KB Output is correct
10 Correct 48 ms 1816 KB Output is correct
11 Correct 20 ms 1856 KB Output is correct
12 Correct 107 ms 1976 KB Output is correct
13 Correct 87 ms 1756 KB Output is correct
14 Correct 93 ms 1764 KB Output is correct
15 Correct 236 ms 2124 KB Output is correct
16 Correct 134 ms 1880 KB Output is correct
17 Correct 88 ms 1756 KB Output is correct
18 Correct 87 ms 1760 KB Output is correct
19 Correct 222 ms 1884 KB Output is correct
20 Correct 154 ms 1872 KB Output is correct
21 Correct 84 ms 1768 KB Output is correct
22 Correct 119 ms 1900 KB Output is correct
23 Correct 135 ms 1852 KB Output is correct
24 Correct 190 ms 1768 KB Output is correct
25 Correct 87 ms 1752 KB Output is correct
26 Correct 115 ms 1888 KB Output is correct
27 Correct 130 ms 1908 KB Output is correct
28 Correct 126 ms 1884 KB Output is correct
29 Correct 89 ms 1756 KB Output is correct
30 Correct 116 ms 1896 KB Output is correct
31 Correct 194 ms 2140 KB Output is correct
32 Correct 327 ms 2300 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 2 ms 1748 KB Output is correct
8 Correct 2 ms 1748 KB Output is correct
9 Correct 3 ms 1748 KB Output is correct
10 Correct 2 ms 1748 KB Output is correct
11 Correct 3 ms 1804 KB Output is correct
12 Correct 4 ms 1748 KB Output is correct
13 Correct 6 ms 1820 KB Output is correct
14 Correct 25 ms 1748 KB Output is correct
15 Correct 77 ms 1876 KB Output is correct
16 Correct 4 ms 1748 KB Output is correct
17 Correct 48 ms 1816 KB Output is correct
18 Correct 20 ms 1856 KB Output is correct
19 Correct 107 ms 1976 KB Output is correct
20 Correct 87 ms 1756 KB Output is correct
21 Correct 93 ms 1764 KB Output is correct
22 Correct 236 ms 2124 KB Output is correct
23 Correct 134 ms 1880 KB Output is correct
24 Correct 88 ms 1756 KB Output is correct
25 Correct 87 ms 1760 KB Output is correct
26 Correct 222 ms 1884 KB Output is correct
27 Correct 154 ms 1872 KB Output is correct
28 Correct 84 ms 1768 KB Output is correct
29 Correct 119 ms 1900 KB Output is correct
30 Correct 135 ms 1852 KB Output is correct
31 Correct 190 ms 1768 KB Output is correct
32 Correct 87 ms 1752 KB Output is correct
33 Correct 115 ms 1888 KB Output is correct
34 Correct 130 ms 1908 KB Output is correct
35 Correct 126 ms 1884 KB Output is correct
36 Correct 89 ms 1756 KB Output is correct
37 Correct 116 ms 1896 KB Output is correct
38 Correct 194 ms 2140 KB Output is correct
39 Correct 327 ms 2300 KB Output is correct
40 Correct 17 ms 1804 KB Output is correct
41 Correct 73 ms 1812 KB Output is correct
42 Correct 9 ms 1748 KB Output is correct
43 Correct 98 ms 1828 KB Output is correct
44 Correct 26 ms 1748 KB Output is correct
45 Correct 180 ms 2144 KB Output is correct
46 Correct 90 ms 1768 KB Output is correct
47 Correct 167 ms 1980 KB Output is correct
48 Correct 113 ms 1888 KB Output is correct
49 Correct 274 ms 2228 KB Output is correct
50 Correct 101 ms 1756 KB Output is correct
51 Correct 151 ms 1872 KB Output is correct
52 Correct 96 ms 1756 KB Output is correct
53 Correct 215 ms 1868 KB Output is correct
54 Correct 97 ms 1772 KB Output is correct
55 Correct 96 ms 1884 KB Output is correct
56 Correct 244 ms 1848 KB Output is correct
57 Correct 257 ms 1768 KB Output is correct
58 Correct 87 ms 1764 KB Output is correct
59 Correct 162 ms 1884 KB Output is correct
60 Correct 204 ms 1904 KB Output is correct
61 Correct 238 ms 1912 KB Output is correct
62 Correct 88 ms 1752 KB Output is correct
63 Correct 127 ms 1880 KB Output is correct
64 Correct 142 ms 2176 KB Output is correct
65 Correct 301 ms 2236 KB Output is correct