oj.uz

Submission #1097219

# Submission time Handle Problem Language Result Execution time Memory
1097219 2024-10-06T12:45:59 Z coldbr3w Toll (BOI17_toll) C++17
100 / 100
 145 ms 78676 KB 
#include <bits/stdc++.h>
using namespace std;
 
#define ll int
#define pll pair<long long, long long>
#define pb push_back
#define F first
#define S second  
#define all(x) (x).begin(), (x).end()
 
const ll N = 5e4 + 100;
const ll inf = 1e9;
const ll mod = 1e9 + 7;
const ll block = 450;
ll k,n,m,q;
struct Matrix{
	vector<vector<ll>>d;
	ll n,m;
	void init(ll _n, ll _m){
		n = _n;
		m = _m;
		d.resize(n, vector<ll>(m));
	}
	ll col() const{
		return m;
	}
	ll row() const{
		return n;
	}
};
Matrix operator* (const Matrix &a, const Matrix &b){
	Matrix ans;
	ans.init(a.row(), b.col());
	for(int i = 0; i < a.row();i++){
		for(int j = 0; j < b.col();j++) ans.d[i][j] = inf;
	}
	for(int i = 0; i < a.row(); i++){
		for(int j = 0; j < b.col();j++){
			for(int k = 0; k < a.col();k++){
				ans.d[i][j] = min(ans.d[i][j], a.d[i][k] + b.d[k][j]);
			}
		}
	}
	return ans;
}
Matrix t[N];
Matrix st[N][17];
void to_thic_cau(){
	cin >> k >> n >> m >> q;
	ll lim = n / k;
	for(int i = 0; i <= lim;i++){
		t[i].init(k, k);
		for(int j = 0; j < k;j++){
			for(int x = 0; x < k;x++) t[i].d[j][x] = inf;
		}
	}
	for(int i = 1; i <= m;i++){
		ll u,v,w; cin >> u >> v >> w;
		t[v / k].d[u % k][v % k] = w;
	}
	for(int i = 0; i <= lim;i++) st[i][0] = t[i];
	for(int j = 1; j <= 16;j++){
		for(int i = 0; i + (1 << j) <= lim + 1;i++) st[i][j] = st[i][j-1] * st[i + (1 << (j - 1))][j-1]; 
	}
	while(q--){
		ll a,b; cin >> a >> b;
		if(a / k == b / k){
			if(a != b){
				cout << -1 << "\n";
			}
			else cout << 0 << '\n';
			continue;
		}
		ll l = a / k + 1, r = b / k;
		Matrix cur; 
		cur.init(1, k);
		for(int i = 0; i < k;i++) cur.d[0][i] = inf;
		cur.d[0][a % k] = 0;
		ll d = r - l + 1;
		for(int i = 16; i >= 0;i--){
			if(d & (1 << i)){
				assert(l <= lim);
				cur = cur * st[l][i];
				l += (1 << i);
			}
		}
		if(cur.d[0][b % k] >= 1e9){
			cout << -1 << "\n";
		}
		else cout << cur.d[0][b % k] << "\n";
	}
}   
 
signed main(){
	ios_base::sync_with_stdio(0);
	cin.tie(0);
	ll tc = 1;
	//cin >> tc;
	while(tc--) to_thic_cau();
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 78676 KB Output is correct
2 Correct 12 ms 28508 KB Output is correct
3 Correct 13 ms 28504 KB Output is correct
4 Correct 13 ms 28508 KB Output is correct
5 Correct 15 ms 29276 KB Output is correct
6 Correct 15 ms 29276 KB Output is correct
7 Correct 16 ms 29268 KB Output is correct
8 Correct 133 ms 78664 KB Output is correct
9 Correct 123 ms 78548 KB Output is correct
10 Correct 116 ms 77752 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 107 ms 76112 KB Output is correct
2 Correct 15 ms 28508 KB Output is correct
3 Correct 13 ms 28504 KB Output is correct
4 Correct 13 ms 28508 KB Output is correct
5 Correct 13 ms 28508 KB Output is correct
6 Correct 15 ms 28672 KB Output is correct
7 Correct 22 ms 29360 KB Output is correct
8 Correct 19 ms 29272 KB Output is correct
9 Correct 123 ms 78644 KB Output is correct
10 Correct 126 ms 71248 KB Output is correct
11 Correct 115 ms 76368 KB Output is correct
12 Correct 120 ms 70032 KB Output is correct
13 Correct 81 ms 52436 KB Output is correct
14 Correct 75 ms 52924 KB Output is correct
15 Correct 74 ms 51024 KB Output is correct
16 Correct 74 ms 51272 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 28504 KB Output is correct
2 Correct 13 ms 28504 KB Output is correct
3 Correct 13 ms 28700 KB Output is correct
4 Correct 13 ms 28508 KB Output is correct
5 Correct 16 ms 28508 KB Output is correct
6 Correct 13 ms 29276 KB Output is correct
7 Correct 15 ms 29208 KB Output is correct
8 Correct 15 ms 28976 KB Output is correct
9 Correct 14 ms 29020 KB Output is correct
10 Correct 109 ms 78552 KB Output is correct
11 Correct 102 ms 76116 KB Output is correct
12 Correct 123 ms 71072 KB Output is correct
13 Correct 116 ms 71144 KB Output is correct
14 Correct 127 ms 70568 KB Output is correct
15 Correct 67 ms 51228 KB Output is correct
16 Correct 70 ms 51104 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 28504 KB Output is correct
2 Correct 13 ms 28504 KB Output is correct
3 Correct 13 ms 28700 KB Output is correct
4 Correct 13 ms 28508 KB Output is correct
5 Correct 16 ms 28508 KB Output is correct
6 Correct 13 ms 29276 KB Output is correct
7 Correct 15 ms 29208 KB Output is correct
8 Correct 15 ms 28976 KB Output is correct
9 Correct 14 ms 29020 KB Output is correct
10 Correct 109 ms 78552 KB Output is correct
11 Correct 102 ms 76116 KB Output is correct
12 Correct 123 ms 71072 KB Output is correct
13 Correct 116 ms 71144 KB Output is correct
14 Correct 127 ms 70568 KB Output is correct
15 Correct 67 ms 51228 KB Output is correct
16 Correct 70 ms 51104 KB Output is correct
17 Correct 103 ms 76112 KB Output is correct
18 Correct 13 ms 28508 KB Output is correct
19 Correct 13 ms 28656 KB Output is correct
20 Correct 12 ms 28640 KB Output is correct
21 Correct 13 ms 28600 KB Output is correct
22 Correct 16 ms 28508 KB Output is correct
23 Correct 16 ms 29276 KB Output is correct
24 Correct 15 ms 29276 KB Output is correct
25 Correct 16 ms 29020 KB Output is correct
26 Correct 15 ms 29020 KB Output is correct
27 Correct 118 ms 78476 KB Output is correct
28 Correct 134 ms 71076 KB Output is correct
29 Correct 124 ms 71428 KB Output is correct
30 Correct 115 ms 70700 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 124 ms 78676 KB Output is correct
2 Correct 12 ms 28508 KB Output is correct
3 Correct 13 ms 28504 KB Output is correct
4 Correct 13 ms 28508 KB Output is correct
5 Correct 15 ms 29276 KB Output is correct
6 Correct 15 ms 29276 KB Output is correct
7 Correct 16 ms 29268 KB Output is correct
8 Correct 133 ms 78664 KB Output is correct
9 Correct 123 ms 78548 KB Output is correct
10 Correct 116 ms 77752 KB Output is correct
11 Correct 107 ms 76112 KB Output is correct
12 Correct 15 ms 28508 KB Output is correct
13 Correct 13 ms 28504 KB Output is correct
14 Correct 13 ms 28508 KB Output is correct
15 Correct 13 ms 28508 KB Output is correct
16 Correct 15 ms 28672 KB Output is correct
17 Correct 22 ms 29360 KB Output is correct
18 Correct 19 ms 29272 KB Output is correct
19 Correct 123 ms 78644 KB Output is correct
20 Correct 126 ms 71248 KB Output is correct
21 Correct 115 ms 76368 KB Output is correct
22 Correct 120 ms 70032 KB Output is correct
23 Correct 81 ms 52436 KB Output is correct
24 Correct 75 ms 52924 KB Output is correct
25 Correct 74 ms 51024 KB Output is correct
26 Correct 74 ms 51272 KB Output is correct
27 Correct 13 ms 28504 KB Output is correct
28 Correct 13 ms 28504 KB Output is correct
29 Correct 13 ms 28700 KB Output is correct
30 Correct 13 ms 28508 KB Output is correct
31 Correct 16 ms 28508 KB Output is correct
32 Correct 13 ms 29276 KB Output is correct
33 Correct 15 ms 29208 KB Output is correct
34 Correct 15 ms 28976 KB Output is correct
35 Correct 14 ms 29020 KB Output is correct
36 Correct 109 ms 78552 KB Output is correct
37 Correct 102 ms 76116 KB Output is correct
38 Correct 123 ms 71072 KB Output is correct
39 Correct 116 ms 71144 KB Output is correct
40 Correct 127 ms 70568 KB Output is correct
41 Correct 67 ms 51228 KB Output is correct
42 Correct 70 ms 51104 KB Output is correct
43 Correct 103 ms 76112 KB Output is correct
44 Correct 13 ms 28508 KB Output is correct
45 Correct 13 ms 28656 KB Output is correct
46 Correct 12 ms 28640 KB Output is correct
47 Correct 13 ms 28600 KB Output is correct
48 Correct 16 ms 28508 KB Output is correct
49 Correct 16 ms 29276 KB Output is correct
50 Correct 15 ms 29276 KB Output is correct
51 Correct 16 ms 29020 KB Output is correct
52 Correct 15 ms 29020 KB Output is correct
53 Correct 118 ms 78476 KB Output is correct
54 Correct 134 ms 71076 KB Output is correct
55 Correct 124 ms 71428 KB Output is correct
56 Correct 115 ms 70700 KB Output is correct
57 Correct 145 ms 72048 KB Output is correct
58 Correct 114 ms 78672 KB Output is correct
59 Correct 114 ms 76372 KB Output is correct