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Submission #415165

# Submission time Handle Problem Language Result Execution time Memory
415165 2021-05-31T15:31:46 Z Blagojce Toll (BOI17_toll) C++11
56 / 100
 358 ms 171516 KB 
#include <bits/stdc++.h>
#define fr(i, n, m) for(int i = (n); i < (m); i ++)
#define pb push_back
#define st first
#define nd second
#define pq priority_queue
#define all(x) begin(x), end(x)
  
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pii;
const ll inf = 1e18;
const int i_inf = 1e9;
const ll mod = 1e9+7;

mt19937 _rand(time(NULL));
const int mxn = 1e5;

int n, k, m, q;


vector<pii> g[mxn];


ll sparse[mxn][17][5][5];


ll aux[5][5];

void fillaux(int u, int p){
	fr(i, 0, k){
		fr(j, 0, k){
			aux[i][j] = inf;
		}
	}
	fr(i, 0, k){
		fr(j, 0, k){
			ll w = sparse[u][p][i][j];
			int pos = (u+(1<<p)-1)*k + j;
			
			for(auto v : g[pos]){
				int jp = v.st%k;
				aux[i][jp] = min(aux[i][jp], w + v.nd);
			}
		}
	}
}
void combine(int u, int p){
	int subu = u;
	int subv = u + (1<<p);
	
	fr(mid, 0, k){
		fr(i, 0, k){
			fr(j, 0, k){
				sparse[subu][p+1][i][j] = min(sparse[subu][p+1][i][j], aux[i][mid] + sparse[subv][p][mid][j]);	
			}
		}
	}
}


void update(int u, int p){
	if(u + (1<<p) > n) return;
	fillaux(u, p-1);
	combine(u, p-1);
}


ll query(int a, int b){
	int S = a/k;
	int E = b/k;
	if(S == E) return -1;
	
	
	ll dist[k];
	fr(i, 0, k) dist[i] = inf;
	dist[a%k] = 0;
	
	for(int p = 16; p >= 0; p --){
		while(S + (1<<p) <= E){
			ll dist2[k];
			fr(i, 0, k) dist2[i] = inf;
			fr(i, 0, k){
				fr(j, 0, k){
					ll w = sparse[S][p][i][j];
					
					int pos = (S+(1<<p)-1)*k + j;
					for(auto v : g[pos]){
						int jp = v.st%k;
						dist2[jp] = min(dist2[jp], dist[i] + w + v.nd);
					}
				}
			}
			fr(i, 0, k) dist[i] = dist2[i];
			S += (1<<p);
		}
	}
	
	if(dist[b%k] == inf) return -1;
	else return dist[b%k];
	
}


void solve(){
	cin >> k >> n >> m >> q;
	
	while(n % k != 0) ++n;
	
	fr(i, 0, m){ 
		int u, v, w;
		cin >> u >> v >> w;
		g[u].pb({v, w});
	}
	fr(u, 0, n/k){
		fr(p, 0, 17){
			fr(i, 0, k){
				fr(j, 0, k){
					sparse[u][p][i][j] = inf;
				}
			}
		}
	}
	fr(u, 0, n/k){
		fr(i, 0, k){
			sparse[u][0][i][i] = 0;
		}
	}
	fr(p, 1, 17){
		fr(u, 0, n/k){
			update(u, p);
		}
	}
	
	
	
	while(q--){
		int a, b;
		cin >> a >> b;
		cout<<query(a, b)<<endl;
	}
	
	
	
}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	solve();
}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 170 ms 171516 KB Output is correct
2 Correct 3 ms 2672 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 6 ms 6004 KB Output is correct
6 Correct 7 ms 5964 KB Output is correct
7 Correct 7 ms 6008 KB Output is correct
8 Correct 165 ms 171468 KB Output is correct
9 Correct 166 ms 171408 KB Output is correct
10 Correct 144 ms 169128 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 236 ms 90052 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 3 ms 2636 KB Output is correct
6 Correct 3 ms 2676 KB Output is correct
7 Correct 25 ms 6116 KB Output is correct
8 Correct 28 ms 4428 KB Output is correct
9 Correct 161 ms 171484 KB Output is correct
10 Correct 290 ms 64476 KB Output is correct
11 Correct 240 ms 90260 KB Output is correct
12 Correct 202 ms 61564 KB Output is correct
13 Correct 283 ms 29816 KB Output is correct
14 Correct 148 ms 40040 KB Output is correct
15 Correct 148 ms 25900 KB Output is correct
16 Correct 163 ms 25948 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2636 KB Output is correct
2 Correct 3 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 5 ms 5964 KB Output is correct
7 Correct 5 ms 4428 KB Output is correct
8 Correct 8 ms 3532 KB Output is correct
9 Correct 6 ms 3532 KB Output is correct
10 Correct 140 ms 171440 KB Output is correct
11 Correct 266 ms 89860 KB Output is correct
12 Correct 293 ms 64196 KB Output is correct
13 Correct 255 ms 64996 KB Output is correct
14 Correct 252 ms 63300 KB Output is correct
15 Correct 152 ms 25796 KB Output is correct
16 Correct 127 ms 25792 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 2636 KB Output is correct
2 Correct 3 ms 2636 KB Output is correct
3 Correct 3 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 2 ms 2636 KB Output is correct
6 Correct 5 ms 5964 KB Output is correct
7 Correct 5 ms 4428 KB Output is correct
8 Correct 8 ms 3532 KB Output is correct
9 Correct 6 ms 3532 KB Output is correct
10 Correct 140 ms 171440 KB Output is correct
11 Correct 266 ms 89860 KB Output is correct
12 Correct 293 ms 64196 KB Output is correct
13 Correct 255 ms 64996 KB Output is correct
14 Correct 252 ms 63300 KB Output is correct
15 Correct 152 ms 25796 KB Output is correct
16 Correct 127 ms 25792 KB Output is correct
17 Correct 286 ms 89956 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 2 ms 2676 KB Output is correct
21 Correct 3 ms 2636 KB Output is correct
22 Correct 2 ms 2668 KB Output is correct
23 Correct 11 ms 6012 KB Output is correct
24 Correct 12 ms 4460 KB Output is correct
25 Correct 21 ms 3532 KB Output is correct
26 Correct 17 ms 3660 KB Output is correct
27 Correct 148 ms 171400 KB Output is correct
28 Correct 248 ms 64336 KB Output is correct
29 Correct 344 ms 64992 KB Output is correct
30 Correct 221 ms 63148 KB Output is correct

Subtask #5
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 170 ms 171516 KB Output is correct
2 Correct 3 ms 2672 KB Output is correct
3 Correct 2 ms 2636 KB Output is correct
4 Correct 3 ms 2636 KB Output is correct
5 Correct 6 ms 6004 KB Output is correct
6 Correct 7 ms 5964 KB Output is correct
7 Correct 7 ms 6008 KB Output is correct
8 Correct 165 ms 171468 KB Output is correct
9 Correct 166 ms 171408 KB Output is correct
10 Correct 144 ms 169128 KB Output is correct
11 Correct 236 ms 90052 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 3 ms 2636 KB Output is correct
15 Correct 3 ms 2636 KB Output is correct
16 Correct 3 ms 2676 KB Output is correct
17 Correct 25 ms 6116 KB Output is correct
18 Correct 28 ms 4428 KB Output is correct
19 Correct 161 ms 171484 KB Output is correct
20 Correct 290 ms 64476 KB Output is correct
21 Correct 240 ms 90260 KB Output is correct
22 Correct 202 ms 61564 KB Output is correct
23 Correct 283 ms 29816 KB Output is correct
24 Correct 148 ms 40040 KB Output is correct
25 Correct 148 ms 25900 KB Output is correct
26 Correct 163 ms 25948 KB Output is correct
27 Correct 3 ms 2636 KB Output is correct
28 Correct 3 ms 2636 KB Output is correct
29 Correct 3 ms 2636 KB Output is correct
30 Correct 3 ms 2636 KB Output is correct
31 Correct 2 ms 2636 KB Output is correct
32 Correct 5 ms 5964 KB Output is correct
33 Correct 5 ms 4428 KB Output is correct
34 Correct 8 ms 3532 KB Output is correct
35 Correct 6 ms 3532 KB Output is correct
36 Correct 140 ms 171440 KB Output is correct
37 Correct 266 ms 89860 KB Output is correct
38 Correct 293 ms 64196 KB Output is correct
39 Correct 255 ms 64996 KB Output is correct
40 Correct 252 ms 63300 KB Output is correct
41 Correct 152 ms 25796 KB Output is correct
42 Correct 127 ms 25792 KB Output is correct
43 Correct 286 ms 89956 KB Output is correct
44 Correct 2 ms 2636 KB Output is correct
45 Correct 2 ms 2636 KB Output is correct
46 Correct 2 ms 2676 KB Output is correct
47 Correct 3 ms 2636 KB Output is correct
48 Correct 2 ms 2668 KB Output is correct
49 Correct 11 ms 6012 KB Output is correct
50 Correct 12 ms 4460 KB Output is correct
51 Correct 21 ms 3532 KB Output is correct
52 Correct 17 ms 3660 KB Output is correct
53 Correct 148 ms 171400 KB Output is correct
54 Correct 248 ms 64336 KB Output is correct
55 Correct 344 ms 64992 KB Output is correct
56 Correct 221 ms 63148 KB Output is correct
57 Runtime error 358 ms 101660 KB Execution killed with signal 11
58 Halted 0 ms 0 KB -