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Submission #511278

# Submission time Handle Problem Language Result Execution time Memory
511278 2022-01-15T13:36:54 Z akhan42 Toll (BOI17_toll) C++17
100 / 100
 359 ms 56832 KB 
#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>

using namespace std;
//using namespace __gnu_pbds;

#define F first
#define S second
#define forn(i, n) for(int i = 0; i < n; ++i)
#define forbn(i, b, n) for(int i = b; i < n; ++i)
#define sz(v) (int)v.size()
#define pb push_back
#define eb emplace_back
#define all(v) v.begin(), v.end()
#define mp make_pair

typedef pair<int, int> ii;
typedef vector<int> vi;
typedef vector<ii> vii;
typedef long long ll;
//typedef tree<ii, null_type, less<ii>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

template <class T> inline void mineq(T &a, T b) { a = min(a, b); }
template <class T> inline void maxeq(T &a, T b) { a = max(a, b); }


const int INF = 1000 * 1000 * 1000;
const int MX = 50 * 1000 + 10;
const int mxpw = 20;
int k, n, m, o;

vii gr[MX][mxpw];


void next_pos(vii& positions, vii& npositions, int pw) {
	vi mns(k, INF);
	int fac = -1;
	for(ii pos_t: positions) {
		int pos = pos_t.F, t = pos_t.S;
		for(ii nb2_t: gr[pos][pw]) {
			int nb2 = nb2_t.F, t2 = nb2_t.S;

			mineq(mns[nb2 % k], t + t2);
			fac = nb2 / k;
		}
	}
	npositions.clear();
	forn(t, k) {
		if(mns[t] != INF) {
			npositions.eb(k * fac + t, mns[t]);
		}
	}
}

void solve() {
	cin >> k >> n >> m >> o;
	forn(_, m) {
		int a, b, t;
		cin >> a >> b >> t;

		gr[a][0].eb(b, t);
	}

	forbn(d, 1, mxpw)
		forn(a, n)
			next_pos(gr[a][d - 1], gr[a][d], d - 1);

	forn(_, o) {
		int a, b;
		cin >> a >> b;

		bool printed = false;
		int diff = b / k - a / k;
		if(diff >= 0) {
			vii positions;
			positions.eb(a, 0);

			for(int pw = 0; diff; pw++, diff >>= 1)
				if(diff & 1)
					next_pos(positions, positions, pw);

			for(ii pos: positions) {
				if(pos.F == b) {
					cout << pos.S << '\n';
					printed = true;
				}
			}
		}

		if(!printed)
			cout << -1 << '\n';
	}
}


int main() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
//	cout.tie(nullptr);

//	freopen("262144.in", "r", stdin);
//	freopen("262144.out", "w", stdout);

	int t = 1;
//	cin >> t;
	while(t--) {
		solve();
	}
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 111 ms 46776 KB Output is correct
2 Correct 12 ms 23788 KB Output is correct
3 Correct 12 ms 23756 KB Output is correct
4 Correct 11 ms 23756 KB Output is correct
5 Correct 13 ms 23884 KB Output is correct
6 Correct 12 ms 23868 KB Output is correct
7 Correct 12 ms 23936 KB Output is correct
8 Correct 111 ms 38816 KB Output is correct
9 Correct 84 ms 30076 KB Output is correct
10 Correct 51 ms 23840 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 177 ms 43604 KB Output is correct
2 Correct 11 ms 23684 KB Output is correct
3 Correct 13 ms 23756 KB Output is correct
4 Correct 11 ms 23756 KB Output is correct
5 Correct 12 ms 23844 KB Output is correct
6 Correct 13 ms 23784 KB Output is correct
7 Correct 23 ms 24028 KB Output is correct
8 Correct 27 ms 24140 KB Output is correct
9 Correct 92 ms 38760 KB Output is correct
10 Correct 242 ms 54516 KB Output is correct
11 Correct 171 ms 45356 KB Output is correct
12 Correct 119 ms 32220 KB Output is correct
13 Correct 233 ms 51588 KB Output is correct
14 Correct 128 ms 41456 KB Output is correct
15 Correct 185 ms 46976 KB Output is correct
16 Correct 195 ms 46844 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23756 KB Output is correct
2 Correct 12 ms 23796 KB Output is correct
3 Correct 12 ms 23756 KB Output is correct
4 Correct 13 ms 23760 KB Output is correct
5 Correct 12 ms 23800 KB Output is correct
6 Correct 13 ms 23884 KB Output is correct
7 Correct 13 ms 24004 KB Output is correct
8 Correct 16 ms 24268 KB Output is correct
9 Correct 15 ms 24140 KB Output is correct
10 Correct 80 ms 39716 KB Output is correct
11 Correct 165 ms 46644 KB Output is correct
12 Correct 227 ms 56384 KB Output is correct
13 Correct 255 ms 54860 KB Output is correct
14 Correct 264 ms 54504 KB Output is correct
15 Correct 185 ms 47948 KB Output is correct
16 Correct 189 ms 47992 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 23756 KB Output is correct
2 Correct 12 ms 23796 KB Output is correct
3 Correct 12 ms 23756 KB Output is correct
4 Correct 13 ms 23760 KB Output is correct
5 Correct 12 ms 23800 KB Output is correct
6 Correct 13 ms 23884 KB Output is correct
7 Correct 13 ms 24004 KB Output is correct
8 Correct 16 ms 24268 KB Output is correct
9 Correct 15 ms 24140 KB Output is correct
10 Correct 80 ms 39716 KB Output is correct
11 Correct 165 ms 46644 KB Output is correct
12 Correct 227 ms 56384 KB Output is correct
13 Correct 255 ms 54860 KB Output is correct
14 Correct 264 ms 54504 KB Output is correct
15 Correct 185 ms 47948 KB Output is correct
16 Correct 189 ms 47992 KB Output is correct
17 Correct 166 ms 46716 KB Output is correct
18 Correct 11 ms 23808 KB Output is correct
19 Correct 12 ms 23808 KB Output is correct
20 Correct 11 ms 23800 KB Output is correct
21 Correct 12 ms 23688 KB Output is correct
22 Correct 12 ms 23800 KB Output is correct
23 Correct 13 ms 24012 KB Output is correct
24 Correct 17 ms 24064 KB Output is correct
25 Correct 19 ms 24396 KB Output is correct
26 Correct 19 ms 24192 KB Output is correct
27 Correct 83 ms 39388 KB Output is correct
28 Correct 253 ms 56424 KB Output is correct
29 Correct 255 ms 56832 KB Output is correct
30 Correct 220 ms 52404 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 111 ms 46776 KB Output is correct
2 Correct 12 ms 23788 KB Output is correct
3 Correct 12 ms 23756 KB Output is correct
4 Correct 11 ms 23756 KB Output is correct
5 Correct 13 ms 23884 KB Output is correct
6 Correct 12 ms 23868 KB Output is correct
7 Correct 12 ms 23936 KB Output is correct
8 Correct 111 ms 38816 KB Output is correct
9 Correct 84 ms 30076 KB Output is correct
10 Correct 51 ms 23840 KB Output is correct
11 Correct 177 ms 43604 KB Output is correct
12 Correct 11 ms 23684 KB Output is correct
13 Correct 13 ms 23756 KB Output is correct
14 Correct 11 ms 23756 KB Output is correct
15 Correct 12 ms 23844 KB Output is correct
16 Correct 13 ms 23784 KB Output is correct
17 Correct 23 ms 24028 KB Output is correct
18 Correct 27 ms 24140 KB Output is correct
19 Correct 92 ms 38760 KB Output is correct
20 Correct 242 ms 54516 KB Output is correct
21 Correct 171 ms 45356 KB Output is correct
22 Correct 119 ms 32220 KB Output is correct
23 Correct 233 ms 51588 KB Output is correct
24 Correct 128 ms 41456 KB Output is correct
25 Correct 185 ms 46976 KB Output is correct
26 Correct 195 ms 46844 KB Output is correct
27 Correct 12 ms 23756 KB Output is correct
28 Correct 12 ms 23796 KB Output is correct
29 Correct 12 ms 23756 KB Output is correct
30 Correct 13 ms 23760 KB Output is correct
31 Correct 12 ms 23800 KB Output is correct
32 Correct 13 ms 23884 KB Output is correct
33 Correct 13 ms 24004 KB Output is correct
34 Correct 16 ms 24268 KB Output is correct
35 Correct 15 ms 24140 KB Output is correct
36 Correct 80 ms 39716 KB Output is correct
37 Correct 165 ms 46644 KB Output is correct
38 Correct 227 ms 56384 KB Output is correct
39 Correct 255 ms 54860 KB Output is correct
40 Correct 264 ms 54504 KB Output is correct
41 Correct 185 ms 47948 KB Output is correct
42 Correct 189 ms 47992 KB Output is correct
43 Correct 166 ms 46716 KB Output is correct
44 Correct 11 ms 23808 KB Output is correct
45 Correct 12 ms 23808 KB Output is correct
46 Correct 11 ms 23800 KB Output is correct
47 Correct 12 ms 23688 KB Output is correct
48 Correct 12 ms 23800 KB Output is correct
49 Correct 13 ms 24012 KB Output is correct
50 Correct 17 ms 24064 KB Output is correct
51 Correct 19 ms 24396 KB Output is correct
52 Correct 19 ms 24192 KB Output is correct
53 Correct 83 ms 39388 KB Output is correct
54 Correct 253 ms 56424 KB Output is correct
55 Correct 255 ms 56832 KB Output is correct
56 Correct 220 ms 52404 KB Output is correct
57 Correct 359 ms 56092 KB Output is correct
58 Correct 93 ms 39540 KB Output is correct
59 Correct 208 ms 46848 KB Output is correct