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Submission #694115

# Submission time Handle Problem Language Result Execution time Memory
694115 2023-02-03T20:41:33 Z vjudge1 Toll (BOI17_toll) C++17
100 / 100
 364 ms 160272 KB 
/*
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2,fma,bmi,bmi2,sse4.2,popcnt,lzcnt")
*/

#include <bits/stdc++.h>
#define taskname "disrupt"
#define all(x) x.begin(), x.end()
#define ll long long
#define ld long double
#define pb push_back
#define ff first
#define ss second
#define pii pair<int, int>
#define vi vector<int>
using namespace std;

const int mxN = 5e4 + 5;
const int mod = 1e9 + 7;
const int lim = 16;
const ll oo = 1e18;

struct matrix {
    ll a[5][5];

    matrix() {memset(a, 0x3f, sizeof a);}

    matrix operator + (const matrix &o) {
        matrix res;
        for(int i = 0; i < 5; ++i)
            for(int j = 0; j < 5; ++j)
                for(int k = 0; k < 5; ++k) {
                    if(a[i][j] > oo || o.a[j][k] > oo)
                        continue;
                    res.a[i][k] = min(res.a[i][k], a[i][j] + o.a[j][k]);
                }
        return res;
    }
};

int n, m, k, q;
int par[mxN][lim];
matrix path[mxN][lim];

void solve() {
    cin >> k >> n >> m >> q;
    for(int i = 0; i < n; ++i)
        par[i][0] = i + 1;
    par[n][0] = n;
    for(int i = 1; i <= m; ++i) {
        int u, v, t;
        cin >> u >> v >> t;
        path[u / k][0].a[u % k][v % k] = t;
    }
    for(int i = 1; i < lim; ++i) {
        for(int j = 0; j * k <= n; ++j) {
            par[j][i] = par[par[j][i - 1]][i - 1];
            path[j][i] = path[j][i - 1] + path[par[j][i - 1]][i - 1];
        }
    }
    while(q--) {
        int a, b;
        cin >> a >> b;
        if(b < a) {
            cout << "-1\n";
            continue;
        }
        if(a == b) {
            cout << "0\n";
            continue;
        }
        matrix res;
        for(int i = 0; i < 5; ++i)
            res.a[i][i] = 0;
        int floor_a = a / k, floor_b = b / k;
        for(int i = lim - 1; i >= 0; --i) {
            int en = floor_a + (1 << i);
            if(en <= floor_b) {
                res = res + path[floor_a][i];
                floor_a = par[floor_a][i];
            }
        }
        ll ans = res.a[a % k][b % k];
        if(ans > oo)
            ans = -1;
        cout << ans << "\n";
    }
}

signed main() {

#ifndef CDuongg
    if(fopen(taskname".in", "r"))
        assert(freopen(taskname".in", "r", stdin)), assert(freopen(taskname".out", "w", stdout));
#else
    freopen("bai3.inp", "r", stdin);
    freopen("bai3.out", "w", stdout);
    auto start = chrono::high_resolution_clock::now();
#endif

    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1; //cin >> t;
    while(t--) solve();

#ifdef CDuongg
    auto end = chrono::high_resolution_clock::now();
    cout << "\n"; for(int i = 1; i <= 100; ++i) cout << '=';
    cout << "\nExecution time: " << chrono::duration_cast<chrono::milliseconds> (end - start).count() << "[ms]" << endl;
#endif

}

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 350 ms 160260 KB Output is correct
2 Correct 61 ms 156876 KB Output is correct
3 Correct 63 ms 156752 KB Output is correct
4 Correct 62 ms 156868 KB Output is correct
5 Correct 65 ms 156928 KB Output is correct
6 Correct 67 ms 156876 KB Output is correct
7 Correct 67 ms 157016 KB Output is correct
8 Correct 350 ms 160144 KB Output is correct
9 Correct 346 ms 160076 KB Output is correct
10 Correct 329 ms 160072 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 231 ms 160104 KB Output is correct
2 Correct 61 ms 156820 KB Output is correct
3 Correct 60 ms 156820 KB Output is correct
4 Correct 59 ms 156788 KB Output is correct
5 Correct 63 ms 156804 KB Output is correct
6 Correct 62 ms 156880 KB Output is correct
7 Correct 76 ms 157024 KB Output is correct
8 Correct 83 ms 157020 KB Output is correct
9 Correct 338 ms 160272 KB Output is correct
10 Correct 194 ms 160260 KB Output is correct
11 Correct 229 ms 160256 KB Output is correct
12 Correct 180 ms 160248 KB Output is correct
13 Correct 127 ms 159076 KB Output is correct
14 Correct 133 ms 158924 KB Output is correct
15 Correct 113 ms 159016 KB Output is correct
16 Correct 110 ms 158988 KB Output is correct

Subtask #3
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 156876 KB Output is correct
2 Correct 61 ms 156852 KB Output is correct
3 Correct 61 ms 156856 KB Output is correct
4 Correct 60 ms 156832 KB Output is correct
5 Correct 61 ms 156768 KB Output is correct
6 Correct 69 ms 156848 KB Output is correct
7 Correct 63 ms 156968 KB Output is correct
8 Correct 63 ms 156916 KB Output is correct
9 Correct 64 ms 156980 KB Output is correct
10 Correct 323 ms 160184 KB Output is correct
11 Correct 201 ms 160200 KB Output is correct
12 Correct 180 ms 160252 KB Output is correct
13 Correct 187 ms 160204 KB Output is correct
14 Correct 169 ms 160180 KB Output is correct
15 Correct 105 ms 158964 KB Output is correct
16 Correct 106 ms 158956 KB Output is correct

Subtask #4
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 60 ms 156876 KB Output is correct
2 Correct 61 ms 156852 KB Output is correct
3 Correct 61 ms 156856 KB Output is correct
4 Correct 60 ms 156832 KB Output is correct
5 Correct 61 ms 156768 KB Output is correct
6 Correct 69 ms 156848 KB Output is correct
7 Correct 63 ms 156968 KB Output is correct
8 Correct 63 ms 156916 KB Output is correct
9 Correct 64 ms 156980 KB Output is correct
10 Correct 323 ms 160184 KB Output is correct
11 Correct 201 ms 160200 KB Output is correct
12 Correct 180 ms 160252 KB Output is correct
13 Correct 187 ms 160204 KB Output is correct
14 Correct 169 ms 160180 KB Output is correct
15 Correct 105 ms 158964 KB Output is correct
16 Correct 106 ms 158956 KB Output is correct
17 Correct 213 ms 160220 KB Output is correct
18 Correct 62 ms 156872 KB Output is correct
19 Correct 61 ms 156876 KB Output is correct
20 Correct 65 ms 156824 KB Output is correct
21 Correct 61 ms 156864 KB Output is correct
22 Correct 61 ms 156876 KB Output is correct
23 Correct 68 ms 156956 KB Output is correct
24 Correct 67 ms 157004 KB Output is correct
25 Correct 66 ms 157016 KB Output is correct
26 Correct 67 ms 157004 KB Output is correct
27 Correct 364 ms 160244 KB Output is correct
28 Correct 184 ms 160260 KB Output is correct
29 Correct 180 ms 160260 KB Output is correct
30 Correct 177 ms 160132 KB Output is correct

Subtask #5
44.0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 350 ms 160260 KB Output is correct
2 Correct 61 ms 156876 KB Output is correct
3 Correct 63 ms 156752 KB Output is correct
4 Correct 62 ms 156868 KB Output is correct
5 Correct 65 ms 156928 KB Output is correct
6 Correct 67 ms 156876 KB Output is correct
7 Correct 67 ms 157016 KB Output is correct
8 Correct 350 ms 160144 KB Output is correct
9 Correct 346 ms 160076 KB Output is correct
10 Correct 329 ms 160072 KB Output is correct
11 Correct 231 ms 160104 KB Output is correct
12 Correct 61 ms 156820 KB Output is correct
13 Correct 60 ms 156820 KB Output is correct
14 Correct 59 ms 156788 KB Output is correct
15 Correct 63 ms 156804 KB Output is correct
16 Correct 62 ms 156880 KB Output is correct
17 Correct 76 ms 157024 KB Output is correct
18 Correct 83 ms 157020 KB Output is correct
19 Correct 338 ms 160272 KB Output is correct
20 Correct 194 ms 160260 KB Output is correct
21 Correct 229 ms 160256 KB Output is correct
22 Correct 180 ms 160248 KB Output is correct
23 Correct 127 ms 159076 KB Output is correct
24 Correct 133 ms 158924 KB Output is correct
25 Correct 113 ms 159016 KB Output is correct
26 Correct 110 ms 158988 KB Output is correct
27 Correct 60 ms 156876 KB Output is correct
28 Correct 61 ms 156852 KB Output is correct
29 Correct 61 ms 156856 KB Output is correct
30 Correct 60 ms 156832 KB Output is correct
31 Correct 61 ms 156768 KB Output is correct
32 Correct 69 ms 156848 KB Output is correct
33 Correct 63 ms 156968 KB Output is correct
34 Correct 63 ms 156916 KB Output is correct
35 Correct 64 ms 156980 KB Output is correct
36 Correct 323 ms 160184 KB Output is correct
37 Correct 201 ms 160200 KB Output is correct
38 Correct 180 ms 160252 KB Output is correct
39 Correct 187 ms 160204 KB Output is correct
40 Correct 169 ms 160180 KB Output is correct
41 Correct 105 ms 158964 KB Output is correct
42 Correct 106 ms 158956 KB Output is correct
43 Correct 213 ms 160220 KB Output is correct
44 Correct 62 ms 156872 KB Output is correct
45 Correct 61 ms 156876 KB Output is correct
46 Correct 65 ms 156824 KB Output is correct
47 Correct 61 ms 156864 KB Output is correct
48 Correct 61 ms 156876 KB Output is correct
49 Correct 68 ms 156956 KB Output is correct
50 Correct 67 ms 157004 KB Output is correct
51 Correct 66 ms 157016 KB Output is correct
52 Correct 67 ms 157004 KB Output is correct
53 Correct 364 ms 160244 KB Output is correct
54 Correct 184 ms 160260 KB Output is correct
55 Correct 180 ms 160260 KB Output is correct
56 Correct 177 ms 160132 KB Output is correct
57 Correct 187 ms 160204 KB Output is correct
58 Correct 345 ms 160132 KB Output is correct
59 Correct 227 ms 160152 KB Output is correct