oj.uz

Submission #651536

# Submission time Handle Problem Language Result Execution time Memory
651536 2022-10-19T08:46:40 Z ghostwriter Toll (BOI17_toll) C++14
7 / 100
 287 ms 203296 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 + 5;
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 149 ms 202976 KB Output is correct
2 Correct 3 ms 3028 KB Output is correct
3 Correct 2 ms 3044 KB Output is correct
4 Correct 2 ms 3028 KB Output is correct
5 Correct 5 ms 6996 KB Output is correct
6 Correct 5 ms 6996 KB Output is correct
7 Correct 5 ms 7020 KB Output is correct
8 Correct 135 ms 203212 KB Output is correct
9 Correct 136 ms 203052 KB Output is correct
10 Correct 104 ms 201372 KB Output is correct

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 171 ms 202180 KB Output is correct
2 Correct 2 ms 3040 KB Output is correct
3 Correct 3 ms 3040 KB Output is correct
4 Correct 2 ms 3040 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 7232 KB Output is correct
8 Correct 9 ms 7252 KB Output is correct
9 Correct 139 ms 203036 KB Output is correct
10 Correct 247 ms 203296 KB Output is correct
11 Correct 180 ms 202616 KB Output is correct
12 Correct 184 ms 202212 KB Output is correct
13 Incorrect 287 ms 121900 KB Output isn't correct
14 Halted 0 ms 0 KB -

Subtask #3
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 3028 KB Output is correct
4 Correct 3 ms 3028 KB Output is correct
5 Correct 2 ms 3028 KB Output is correct
6 Correct 6 ms 6996 KB Output is correct
7 Correct 7 ms 6996 KB Output is correct
8 Correct 11 ms 6956 KB Output is correct
9 Correct 8 ms 7044 KB Output is correct
10 Correct 127 ms 202444 KB Output is correct
11 Correct 166 ms 202424 KB Output is correct
12 Correct 248 ms 202976 KB Output is correct
13 Correct 240 ms 203224 KB Output is correct
14 Correct 204 ms 202524 KB Output is correct
15 Incorrect 165 ms 120424 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #4
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 3028 KB Output is correct
4 Correct 3 ms 3028 KB Output is correct
5 Correct 2 ms 3028 KB Output is correct
6 Correct 6 ms 6996 KB Output is correct
7 Correct 7 ms 6996 KB Output is correct
8 Correct 11 ms 6956 KB Output is correct
9 Correct 8 ms 7044 KB Output is correct
10 Correct 127 ms 202444 KB Output is correct
11 Correct 166 ms 202424 KB Output is correct
12 Correct 248 ms 202976 KB Output is correct
13 Correct 240 ms 203224 KB Output is correct
14 Correct 204 ms 202524 KB Output is correct
15 Incorrect 165 ms 120424 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #5
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 149 ms 202976 KB Output is correct
2 Correct 3 ms 3028 KB Output is correct
3 Correct 2 ms 3044 KB Output is correct
4 Correct 2 ms 3028 KB Output is correct
5 Correct 5 ms 6996 KB Output is correct
6 Correct 5 ms 6996 KB Output is correct
7 Correct 5 ms 7020 KB Output is correct
8 Correct 135 ms 203212 KB Output is correct
9 Correct 136 ms 203052 KB Output is correct
10 Correct 104 ms 201372 KB Output is correct
11 Correct 171 ms 202180 KB Output is correct
12 Correct 2 ms 3040 KB Output is correct
13 Correct 3 ms 3040 KB Output is correct
14 Correct 2 ms 3040 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 7232 KB Output is correct
18 Correct 9 ms 7252 KB Output is correct
19 Correct 139 ms 203036 KB Output is correct
20 Correct 247 ms 203296 KB Output is correct
21 Correct 180 ms 202616 KB Output is correct
22 Correct 184 ms 202212 KB Output is correct
23 Incorrect 287 ms 121900 KB Output isn't correct
24 Halted 0 ms 0 KB -