oj.uz

Submission #651538

# Submission time Handle Problem Language Result Execution time Memory
651538 2022-10-19T08:49:45 Z ghostwriter Toll (BOI17_toll) C++14
100 / 100
 345 ms 213068 KB 
#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
#include <debug.h>
#else
#define debug(...)
#endif
#define ft front
#define bk back
#define st first
#define nd second
#define ins insert
#define ers erase
#define pb push_back
#define pf push_front
#define _pb pop_back
#define _pf pop_front
#define lb lower_bound
#define ub upper_bound
#define mtp make_tuple
#define bg begin
#define ed end
#define all(x) x.bg(), x.ed()
#define sz(x) (int)x.size()
typedef long long ll; typedef unsigned long long ull;
typedef double db; typedef long double ldb;
typedef pair<int, int> pi; typedef pair<ll, ll> pll;
typedef vector<int> vi; typedef vector<ll> vll; typedef vector<pi> vpi; typedef vector<pll> vpll;
typedef string str;
template<typename T> T gcd(T a, T b) { return (b == 0? a : gcd(b, a % b)); }
template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; }
#define FOR(i, l, r) for (int i = l; i <= r; ++i)
#define FOS(i, r, l) for (int i = r; i >= l; --i)
#define FRN(i, n) for (int i = 0; i < n; ++i)
#define FSN(i, n) for (int i = n - 1; i >= 0; --i)
#define EACH(i, x) for (auto &i : x)
#define WHILE while
#define file "TEST"
mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
ll rand(ll l, ll r) { return uniform_int_distribution<ll>(l, r)(rd); }
/*
----------------------------------------------------------------
    END OF TEMPLATE
----------------------------------------------------------------
    Tran The Bao - ghostwriter
    Training for VOI23 gold medal
----------------------------------------------------------------
    GOAT
----------------------------------------------------------------
*/
const int oo = 1e9 + 5;
const int N = 5e4 + 5;
const int D = 205;
const int MAXD = 255;
const int Dxk = 1e3 + 55;
int n, m, k, o, sb[MAXD], eb[MAXD], d[MAXD][Dxk][Dxk], d1[10][10], d2[10][10], ans[N];
pi q[N];
vi q1[MAXD][MAXD];
vpi adj[N];
signed main() {
    ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
    // freopen(file".inp", "r", stdin);
    // freopen(file".out", "w", stdout);
    cin >> k >> n >> m >> o;
    FOR(i, 1, m) {
    	int a, b, t;
    	cin >> a >> b >> t;
    	adj[a].pb({b, t});
    }
    FOR(i, 1, o) {
    	cin >> q[i].st >> q[i].nd;
    	q1[q[i].st / k / D][q[i].nd / k / D].pb(i);
    	ans[i] = oo;
    }
    memset(sb, -1, sizeof sb);
    memset(eb, -1, sizeof eb);
    FRN(i, n) {
    	if (sb[i / k / D] == -1) sb[i / k / D] = i;
    	eb[i / k / D] = i;
    }
    FOR(i, 0, (n - 1) / k / D) {
    	FOR(j, sb[i], eb[i]) {
			FOR(z, 0, eb[i] - sb[i]) d[i][j - sb[i]][z] = oo;
			d[i][j - sb[i]][j - sb[i]] = 0;
    	}
    	FOS(j, eb[i], sb[i])
		EACH(z, adj[j]) {
			int v = z.st - sb[i], t = z.nd;
			if (v + sb[i] > eb[i]) continue;
			FOR(x, 0, eb[i] - sb[i]) d[i][j - sb[i]][x] = min(d[i][j - sb[i]][x], d[i][v][x] + t);
		}
    }
    FOR(i, 0, (n - 1) / k / D) {
    	EACH(j, q1[i][i]) ans[j] = d[i][q[j].st - sb[i]][q[j].nd - sb[i]];
        if (i == n / k / D) continue;
        FRN(j, 5)
        FRN(z, 5)
            d1[j][z] = oo;
        FRN(j, 5) {
            int x = eb[i] - j;
            if (x < sb[i]) continue;
            EACH(z, adj[x]) {
                int v = z.st, t = z.nd;
                if (v <= eb[i]) continue;
                d1[j][v - sb[i + 1]] = t;
            }
        }
    	FOR(j, i + 1, (n - 1) / k / D) {
            EACH(z, q1[i][j]) {
                int a = q[z].st, b = q[z].nd;
                FRN(x1, 5) {
                    int x = eb[i] - x1;
                    if (x < sb[i]) continue;
                    FRN(y1, 5) {
                        int y = sb[j] + y1;
                        if (y > eb[j]) continue;
                        ans[z] = min(1LL * ans[z], 1LL * d[i][a - sb[i]][x - sb[i]] + d1[x1][y1] + d[j][y - sb[j]][b - sb[j]]);
                    }
                }
            }
            if (j == (n - 1) / k / D) break;
            FRN(x1, 5)
            FRN(x2, 5)
                d2[x1][x2] = oo;
            FRN(x1, 5) {
                int x = eb[i] - x1;
                if (x < sb[i]) continue;
                FRN(x2, 5) {
                    int a = sb[j] + x2;
                    if (a > eb[j]) continue;
                    FRN(y2, 5) {
                        int b = eb[j] - y2;
                        if (b < sb[j]) continue;
                        EACH(y1, adj[b]) {
                            int y = y1.st, t = y1.nd;
                            if (y <= eb[j]) continue;
                            d2[x1][y - sb[j + 1]] = min(1LL * d2[x1][y - sb[j + 1]], 1LL * d1[x1][x2] + d[j][x2][b - sb[j]] + t);
                        }
                    }
                }
            }
            swap(d1, d2);
    	}
    }
    FOR(i, 1, o) cout << (ans[i] < oo? ans[i] : -1) << '\n';
    return 0;
}
/*
5 14 5 5
0 5 9
5 12 10
0 7 7
7 12 8
4 7 10
0 12
0 5
0 7
7 12
0 13
----------------------------------------------------------------
From Benq:
    stuff you should look for
        * int overflow, array bounds
        * special cases (n=1?)
        * do smth instead of nothing and stay organized
        * WRITE STUFF DOWN
        * DON'T GET STUCK ON ONE APPROACH
----------------------------------------------------------------
*/

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 139 ms 212556 KB Output is correct
2 Correct 2 ms 3028 KB Output is correct
3 Correct 2 ms 3028 KB Output is correct
4 Correct 2 ms 3028 KB Output is correct
5 Correct 4 ms 7252 KB Output is correct
6 Correct 5 ms 7252 KB Output is correct
7 Correct 4 ms 7252 KB Output is correct
8 Correct 163 ms 212564 KB Output is correct
9 Correct 136 ms 212548 KB Output is correct
10 Correct 104 ms 211052 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 213 ms 211868 KB Output is correct
2 Correct 2 ms 3028 KB Output is correct
3 Correct 2 ms 3028 KB Output is correct
4 Correct 1 ms 3028 KB Output is correct
5 Correct 2 ms 3028 KB Output is correct
6 Correct 2 ms 3028 KB Output is correct
7 Correct 7 ms 7380 KB Output is correct
8 Correct 8 ms 7380 KB Output is correct
9 Correct 131 ms 212300 KB Output is correct
10 Correct 273 ms 212640 KB Output is correct
11 Correct 198 ms 211952 KB Output is correct
12 Correct 210 ms 211580 KB Output is correct
13 Correct 326 ms 129812 KB Output is correct
14 Correct 176 ms 129252 KB Output is correct
15 Correct 192 ms 128792 KB Output is correct
16 Correct 233 ms 128696 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3028 KB Output is correct
2 Correct 2 ms 3028 KB Output is correct
3 Correct 2 ms 3080 KB Output is correct
4 Correct 2 ms 3028 KB Output is correct
5 Correct 3 ms 3028 KB Output is correct
6 Correct 5 ms 7124 KB Output is correct
7 Correct 7 ms 7124 KB Output is correct
8 Correct 12 ms 7252 KB Output is correct
9 Correct 10 ms 7252 KB Output is correct
10 Correct 137 ms 212164 KB Output is correct
11 Correct 168 ms 211692 KB Output is correct
12 Correct 256 ms 212484 KB Output is correct
13 Correct 248 ms 212692 KB Output is correct
14 Correct 222 ms 212040 KB Output is correct
15 Correct 192 ms 128232 KB Output is correct
16 Correct 172 ms 128704 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 3028 KB Output is correct
2 Correct 2 ms 3028 KB Output is correct
3 Correct 2 ms 3080 KB Output is correct
4 Correct 2 ms 3028 KB Output is correct
5 Correct 3 ms 3028 KB Output is correct
6 Correct 5 ms 7124 KB Output is correct
7 Correct 7 ms 7124 KB Output is correct
8 Correct 12 ms 7252 KB Output is correct
9 Correct 10 ms 7252 KB Output is correct
10 Correct 137 ms 212164 KB Output is correct
11 Correct 168 ms 211692 KB Output is correct
12 Correct 256 ms 212484 KB Output is correct
13 Correct 248 ms 212692 KB Output is correct
14 Correct 222 ms 212040 KB Output is correct
15 Correct 192 ms 128232 KB Output is correct
16 Correct 172 ms 128704 KB Output is correct
17 Correct 175 ms 212216 KB Output is correct
18 Correct 2 ms 3044 KB Output is correct
19 Correct 2 ms 3028 KB Output is correct
20 Correct 2 ms 3040 KB Output is correct
21 Correct 2 ms 3028 KB Output is correct
22 Correct 3 ms 3028 KB Output is correct
23 Correct 5 ms 7252 KB Output is correct
24 Correct 6 ms 7252 KB Output is correct
25 Correct 10 ms 7408 KB Output is correct
26 Correct 8 ms 7280 KB Output is correct
27 Correct 146 ms 212612 KB Output is correct
28 Correct 249 ms 212764 KB Output is correct
29 Correct 261 ms 213068 KB Output is correct
30 Correct 229 ms 212448 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 139 ms 212556 KB Output is correct
2 Correct 2 ms 3028 KB Output is correct
3 Correct 2 ms 3028 KB Output is correct
4 Correct 2 ms 3028 KB Output is correct
5 Correct 4 ms 7252 KB Output is correct
6 Correct 5 ms 7252 KB Output is correct
7 Correct 4 ms 7252 KB Output is correct
8 Correct 163 ms 212564 KB Output is correct
9 Correct 136 ms 212548 KB Output is correct
10 Correct 104 ms 211052 KB Output is correct
11 Correct 213 ms 211868 KB Output is correct
12 Correct 2 ms 3028 KB Output is correct
13 Correct 2 ms 3028 KB Output is correct
14 Correct 1 ms 3028 KB Output is correct
15 Correct 2 ms 3028 KB Output is correct
16 Correct 2 ms 3028 KB Output is correct
17 Correct 7 ms 7380 KB Output is correct
18 Correct 8 ms 7380 KB Output is correct
19 Correct 131 ms 212300 KB Output is correct
20 Correct 273 ms 212640 KB Output is correct
21 Correct 198 ms 211952 KB Output is correct
22 Correct 210 ms 211580 KB Output is correct
23 Correct 326 ms 129812 KB Output is correct
24 Correct 176 ms 129252 KB Output is correct
25 Correct 192 ms 128792 KB Output is correct
26 Correct 233 ms 128696 KB Output is correct
27 Correct 2 ms 3028 KB Output is correct
28 Correct 2 ms 3028 KB Output is correct
29 Correct 2 ms 3080 KB Output is correct
30 Correct 2 ms 3028 KB Output is correct
31 Correct 3 ms 3028 KB Output is correct
32 Correct 5 ms 7124 KB Output is correct
33 Correct 7 ms 7124 KB Output is correct
34 Correct 12 ms 7252 KB Output is correct
35 Correct 10 ms 7252 KB Output is correct
36 Correct 137 ms 212164 KB Output is correct
37 Correct 168 ms 211692 KB Output is correct
38 Correct 256 ms 212484 KB Output is correct
39 Correct 248 ms 212692 KB Output is correct
40 Correct 222 ms 212040 KB Output is correct
41 Correct 192 ms 128232 KB Output is correct
42 Correct 172 ms 128704 KB Output is correct
43 Correct 175 ms 212216 KB Output is correct
44 Correct 2 ms 3044 KB Output is correct
45 Correct 2 ms 3028 KB Output is correct
46 Correct 2 ms 3040 KB Output is correct
47 Correct 2 ms 3028 KB Output is correct
48 Correct 3 ms 3028 KB Output is correct
49 Correct 5 ms 7252 KB Output is correct
50 Correct 6 ms 7252 KB Output is correct
51 Correct 10 ms 7408 KB Output is correct
52 Correct 8 ms 7280 KB Output is correct
53 Correct 146 ms 212612 KB Output is correct
54 Correct 249 ms 212764 KB Output is correct
55 Correct 261 ms 213068 KB Output is correct
56 Correct 229 ms 212448 KB Output is correct
57 Correct 345 ms 213000 KB Output is correct
58 Correct 138 ms 212920 KB Output is correct
59 Correct 182 ms 212584 KB Output is correct