oj.uz

Submission #408620

# Submission time Handle Problem Language Result Execution time Memory
408620 2021-05-19T09:45:56 Z kwongweng Toll (BOI17_toll) C++17
100 / 100
 201 ms 94276 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef long double ld;
typedef pair<ll, ll> pll;
#define FOR(i, a, b) for(int i = a; i < b; i++)
#define ROF(i, a, b) for(int i = a; i >= b; i--)
#define ms memset
#define pb push_back
#define F first
#define S second
ll MOD = 1000000007;
ll INF = 1000000000;
 
ll power(ll base, ll n){
	if (n == 0) return 1;
	if (n == 1) return base;
	ll halfn = power(base, n/2);
	if (n % 2 == 0) return (halfn * halfn) % MOD;
	return (((halfn * halfn) % MOD) * base) % MOD;
}
 
ll inverse(ll n){
	return power(n, MOD-2);
}
 
ll add(ll a, ll b){
	return (a+b) % MOD;
}
 
ll mul(ll a, ll b){
	return (a*b) % MOD;
}
 
ll gcd(ll a, ll b){
	if (a == 0) return b;
	if (a == 1) return 1;
	return gcd(b%a, a);
}

int k;
struct piece{
	int dist[5][5];
	void init(){
		ms(dist, -1, sizeof(dist));
	}
	void upd(int a, int b, int val){
		if (dist[a][b] == -1) dist[a][b] = val;
		else dist[a][b] = min(dist[a][b], val);
	}
};
piece comb(piece p1, piece p2){
	piece ans; ans.init();
	FOR(i, 0, k){
		FOR(j, 0, k){
			FOR(l, 0, k){
				if (p1.dist[i][l] == -1 || p2.dist[l][j] == -1) continue; 
				ans.upd(i, j, p1.dist[i][l] + p2.dist[l][j]);
			}
		}
	}
	return ans;
}
int main(){
    ios::sync_with_stdio(false);
    int n, m, o; cin >> k >> n >> m >> o;
    int B = (n-1)/k+1;
    piece g[B][19];
    FOR(i, 0, B){
    	FOR(j, 0, 19) g[i][j].init();
	}
	FOR(i, 0, m){
		int a, b, t; cin >> a >> b >> t;
		g[a/k][0].upd(a%k, b%k, t); 
	}
	FOR(i, 1, 19){
		FOR(j, 0, B-(1<<i)){
			g[j][i] = comb(g[j][i-1], g[j+(1<<(i-1))][i-1]);
		}
	}
	while (o--){
		int a, b; cin >> a >> b;
		piece ans; ans.init();
		int found = -1;
		int len = b/k - a/k;
		int cnt = 0; int pos = a/k;
		while (len > 0){
			if (len % 2 == 1){
				if (found == -1){
					ans = g[pos][cnt]; found = 1;
				}
				else ans = comb(ans, g[pos][cnt]);
				pos += (1<<cnt);
			}
			len /= 2;
			cnt++;
		}
		cout << ans.dist[a%k][b%k] << '\n';
	}
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 187 ms 94148 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 5 ms 2236 KB Output is correct
6 Correct 4 ms 2116 KB Output is correct
7 Correct 5 ms 2124 KB Output is correct
8 Correct 184 ms 94124 KB Output is correct
9 Correct 185 ms 94148 KB Output is correct
10 Correct 166 ms 93296 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 127 ms 48400 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 22 ms 2252 KB Output is correct
8 Correct 22 ms 1372 KB Output is correct
9 Correct 201 ms 94128 KB Output is correct
10 Correct 134 ms 33568 KB Output is correct
11 Correct 138 ms 48420 KB Output is correct
12 Correct 108 ms 32540 KB Output is correct
13 Correct 97 ms 13892 KB Output is correct
14 Correct 77 ms 20276 KB Output is correct
15 Correct 74 ms 12592 KB Output is correct
16 Correct 77 ms 12612 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 3 ms 2124 KB Output is correct
7 Correct 2 ms 1228 KB Output is correct
8 Correct 3 ms 716 KB Output is correct
9 Correct 3 ms 716 KB Output is correct
10 Correct 162 ms 94112 KB Output is correct
11 Correct 105 ms 48296 KB Output is correct
12 Correct 111 ms 33452 KB Output is correct
13 Correct 112 ms 33580 KB Output is correct
14 Correct 97 ms 33056 KB Output is correct
15 Correct 63 ms 12612 KB Output is correct
16 Correct 66 ms 12592 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 332 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 3 ms 2124 KB Output is correct
7 Correct 2 ms 1228 KB Output is correct
8 Correct 3 ms 716 KB Output is correct
9 Correct 3 ms 716 KB Output is correct
10 Correct 162 ms 94112 KB Output is correct
11 Correct 105 ms 48296 KB Output is correct
12 Correct 111 ms 33452 KB Output is correct
13 Correct 112 ms 33580 KB Output is correct
14 Correct 97 ms 33056 KB Output is correct
15 Correct 63 ms 12612 KB Output is correct
16 Correct 66 ms 12592 KB Output is correct
17 Correct 115 ms 48292 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 312 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 8 ms 2124 KB Output is correct
24 Correct 8 ms 1228 KB Output is correct
25 Correct 11 ms 716 KB Output is correct
26 Correct 10 ms 844 KB Output is correct
27 Correct 177 ms 94020 KB Output is correct
28 Correct 115 ms 33484 KB Output is correct
29 Correct 111 ms 33696 KB Output is correct
30 Correct 106 ms 33224 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 187 ms 94148 KB Output is correct
2 Correct 1 ms 384 KB Output is correct
3 Correct 1 ms 316 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Correct 5 ms 2236 KB Output is correct
6 Correct 4 ms 2116 KB Output is correct
7 Correct 5 ms 2124 KB Output is correct
8 Correct 184 ms 94124 KB Output is correct
9 Correct 185 ms 94148 KB Output is correct
10 Correct 166 ms 93296 KB Output is correct
11 Correct 127 ms 48400 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 204 KB Output is correct
16 Correct 1 ms 204 KB Output is correct
17 Correct 22 ms 2252 KB Output is correct
18 Correct 22 ms 1372 KB Output is correct
19 Correct 201 ms 94128 KB Output is correct
20 Correct 134 ms 33568 KB Output is correct
21 Correct 138 ms 48420 KB Output is correct
22 Correct 108 ms 32540 KB Output is correct
23 Correct 97 ms 13892 KB Output is correct
24 Correct 77 ms 20276 KB Output is correct
25 Correct 74 ms 12592 KB Output is correct
26 Correct 77 ms 12612 KB Output is correct
27 Correct 1 ms 332 KB Output is correct
28 Correct 1 ms 204 KB Output is correct
29 Correct 1 ms 204 KB Output is correct
30 Correct 1 ms 204 KB Output is correct
31 Correct 1 ms 204 KB Output is correct
32 Correct 3 ms 2124 KB Output is correct
33 Correct 2 ms 1228 KB Output is correct
34 Correct 3 ms 716 KB Output is correct
35 Correct 3 ms 716 KB Output is correct
36 Correct 162 ms 94112 KB Output is correct
37 Correct 105 ms 48296 KB Output is correct
38 Correct 111 ms 33452 KB Output is correct
39 Correct 112 ms 33580 KB Output is correct
40 Correct 97 ms 33056 KB Output is correct
41 Correct 63 ms 12612 KB Output is correct
42 Correct 66 ms 12592 KB Output is correct
43 Correct 115 ms 48292 KB Output is correct
44 Correct 1 ms 204 KB Output is correct
45 Correct 1 ms 312 KB Output is correct
46 Correct 1 ms 204 KB Output is correct
47 Correct 1 ms 204 KB Output is correct
48 Correct 1 ms 204 KB Output is correct
49 Correct 8 ms 2124 KB Output is correct
50 Correct 8 ms 1228 KB Output is correct
51 Correct 11 ms 716 KB Output is correct
52 Correct 10 ms 844 KB Output is correct
53 Correct 177 ms 94020 KB Output is correct
54 Correct 115 ms 33484 KB Output is correct
55 Correct 111 ms 33696 KB Output is correct
56 Correct 106 ms 33224 KB Output is correct
57 Correct 158 ms 26820 KB Output is correct
58 Correct 183 ms 94276 KB Output is correct
59 Correct 139 ms 48544 KB Output is correct