oj.uz

답안 #480714

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
480714 2021-10-17T23:26:48 Z hidden1 Toll (BOI17_toll) C++14
100 / 100
 238 ms 32964 KB 
#include <bits/stdc++.h>
using namespace std;
//#pragma GCC optimize ("O3")
//#pragma GCC target ("sse4")
#define endl "\n"
typedef long long ll;
template<class T, class T2> inline ostream &operator <<(ostream &out, const pair<T, T2> &x) { out << x.first << " " << x.second; return out;}
template<class T, class T2> inline istream &operator >>(istream &in, pair<T, T2> &x) { in >> x.first >> x.second; return in;}
template<class T, class T2> inline bool chkmax(T &x, const T2 &y) { return x < y ? x = y, 1 : 0; }
template<class T, class T2> inline bool chkmin(T &x, const T2 &y) { return x > y ? x = y, 1 : 0; }
const ll mod = 1e15 + 7;
#ifndef LOCAL
#define cerr if(false) cerr
#endif

typedef vector<vector<ll> > mat;

const ll MAX_N = 1e5 + 10;
ll n, m, k, q;

mat mult(const mat &a, const mat &b) {
    mat ret = mat(k, vector<ll>(k, mod));
    if(a.empty()) { return b; }
    if(b.empty()) { return a; }
    for(ll i = 0; i < k; i ++) {
        for(ll j = 0; j < k; j ++) {
            for(ll mid = 0; mid < k; mid ++) {
                chkmin(ret[i][j], a[i][mid] + b[mid][j]);
            }
        }
    }
    return ret;
}

vector<pair<ll, ll> > g[MAX_N];

mat prec[MAX_N];
mat tree[4 * MAX_N];

void build(int curr, int l, int r) {
    if(l == r) {
        tree[curr] = prec[l];
        return;
    }
    int m = (l + r) / 2ll;
    build(curr * 2, l, m);
    build(curr * 2 + 1, m + 1, r);
    tree[curr] = mult(tree[curr * 2], tree[curr * 2 + 1]);
}

mat quer(int curr, int l, int r, int ql, int qr) {
    if(ql <= l && r <= qr) {
        return tree[curr];
    } else if(ql > r || l > qr) {
        return {};
    }
    int m = (l + r) / 2ll;
    return mult(
            quer(curr * 2, l, m, ql, qr),
            quer(curr * 2 + 1, m + 1, r, ql, qr)
        );
}

signed main() {
    ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
    cin >> k >> n >> m >> q;
    for(ll i = 0; i < m; i ++) {
        ll a, b, c;
        cin >> a >> b >> c;
        g[a].push_back({b, c});
    }
    for(ll i = 0; i < n; i += k) {
        prec[i / k] = mat(k, vector<ll>(k, mod));
        for(ll j = i; j < i + k; j ++) {
            for(auto it : g[j]) {
                chkmin(prec[i / k][j % k][it.first % k], it.second);
            }
        }
    }
    build(1, 0, MAX_N - 1);
    while(q --) {
        ll a, b;
        cin >> a >> b;
        if(a / k >= b / k) {
            cout << -1 << endl; 
            continue;
        } 
        mat ret = quer(1, 0, MAX_N - 1, a / k, b / k - 1);

        if(ret[a % k][b % k] == mod) {
            cout << -1 << endl; 
        } else {
            cout << ret[a % k][b % k] << endl;
        }
    }
    return 0;
}

Subtask #1
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 105 ms 25320 KB Output is correct
2 Correct 18 ms 14412 KB Output is correct
3 Correct 17 ms 14376 KB Output is correct
4 Correct 20 ms 14376 KB Output is correct
5 Correct 23 ms 14628 KB Output is correct
6 Correct 24 ms 14540 KB Output is correct
7 Correct 25 ms 14568 KB Output is correct
8 Correct 105 ms 25372 KB Output is correct
9 Correct 102 ms 25280 KB Output is correct
10 Correct 86 ms 23756 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 126 ms 26172 KB Output is correct
2 Correct 17 ms 14344 KB Output is correct
3 Correct 19 ms 14284 KB Output is correct
4 Correct 22 ms 14408 KB Output is correct
5 Correct 25 ms 14392 KB Output is correct
6 Correct 28 ms 14284 KB Output is correct
7 Correct 41 ms 14700 KB Output is correct
8 Correct 54 ms 14768 KB Output is correct
9 Correct 107 ms 26276 KB Output is correct
10 Correct 143 ms 28852 KB Output is correct
11 Correct 138 ms 27936 KB Output is correct
12 Correct 114 ms 26180 KB Output is correct
13 Correct 128 ms 27784 KB Output is correct
14 Correct 81 ms 23420 KB Output is correct
15 Correct 92 ms 23920 KB Output is correct
16 Correct 91 ms 23996 KB Output is correct

Subtask #3
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 14400 KB Output is correct
2 Correct 20 ms 14284 KB Output is correct
3 Correct 21 ms 14284 KB Output is correct
4 Correct 27 ms 14408 KB Output is correct
5 Correct 29 ms 14408 KB Output is correct
6 Correct 19 ms 14616 KB Output is correct
7 Correct 28 ms 14548 KB Output is correct
8 Correct 33 ms 14756 KB Output is correct
9 Correct 28 ms 14708 KB Output is correct
10 Correct 55 ms 25304 KB Output is correct
11 Correct 76 ms 26044 KB Output is correct
12 Correct 89 ms 26524 KB Output is correct
13 Correct 109 ms 26984 KB Output is correct
14 Correct 85 ms 25796 KB Output is correct
15 Correct 66 ms 22724 KB Output is correct
16 Correct 69 ms 22712 KB Output is correct

Subtask #4
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 17 ms 14400 KB Output is correct
2 Correct 20 ms 14284 KB Output is correct
3 Correct 21 ms 14284 KB Output is correct
4 Correct 27 ms 14408 KB Output is correct
5 Correct 29 ms 14408 KB Output is correct
6 Correct 19 ms 14616 KB Output is correct
7 Correct 28 ms 14548 KB Output is correct
8 Correct 33 ms 14756 KB Output is correct
9 Correct 28 ms 14708 KB Output is correct
10 Correct 55 ms 25304 KB Output is correct
11 Correct 76 ms 26044 KB Output is correct
12 Correct 89 ms 26524 KB Output is correct
13 Correct 109 ms 26984 KB Output is correct
14 Correct 85 ms 25796 KB Output is correct
15 Correct 66 ms 22724 KB Output is correct
16 Correct 69 ms 22712 KB Output is correct
17 Correct 97 ms 26104 KB Output is correct
18 Correct 17 ms 14408 KB Output is correct
19 Correct 21 ms 14404 KB Output is correct
20 Correct 22 ms 14284 KB Output is correct
21 Correct 29 ms 14284 KB Output is correct
22 Correct 28 ms 14284 KB Output is correct
23 Correct 29 ms 14540 KB Output is correct
24 Correct 36 ms 14540 KB Output is correct
25 Correct 62 ms 14700 KB Output is correct
26 Correct 54 ms 14696 KB Output is correct
27 Correct 70 ms 25316 KB Output is correct
28 Correct 122 ms 26564 KB Output is correct
29 Correct 129 ms 27184 KB Output is correct
30 Correct 114 ms 25924 KB Output is correct

Subtask #5
44.0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Correct 105 ms 25320 KB Output is correct
2 Correct 18 ms 14412 KB Output is correct
3 Correct 17 ms 14376 KB Output is correct
4 Correct 20 ms 14376 KB Output is correct
5 Correct 23 ms 14628 KB Output is correct
6 Correct 24 ms 14540 KB Output is correct
7 Correct 25 ms 14568 KB Output is correct
8 Correct 105 ms 25372 KB Output is correct
9 Correct 102 ms 25280 KB Output is correct
10 Correct 86 ms 23756 KB Output is correct
11 Correct 126 ms 26172 KB Output is correct
12 Correct 17 ms 14344 KB Output is correct
13 Correct 19 ms 14284 KB Output is correct
14 Correct 22 ms 14408 KB Output is correct
15 Correct 25 ms 14392 KB Output is correct
16 Correct 28 ms 14284 KB Output is correct
17 Correct 41 ms 14700 KB Output is correct
18 Correct 54 ms 14768 KB Output is correct
19 Correct 107 ms 26276 KB Output is correct
20 Correct 143 ms 28852 KB Output is correct
21 Correct 138 ms 27936 KB Output is correct
22 Correct 114 ms 26180 KB Output is correct
23 Correct 128 ms 27784 KB Output is correct
24 Correct 81 ms 23420 KB Output is correct
25 Correct 92 ms 23920 KB Output is correct
26 Correct 91 ms 23996 KB Output is correct
27 Correct 17 ms 14400 KB Output is correct
28 Correct 20 ms 14284 KB Output is correct
29 Correct 21 ms 14284 KB Output is correct
30 Correct 27 ms 14408 KB Output is correct
31 Correct 29 ms 14408 KB Output is correct
32 Correct 19 ms 14616 KB Output is correct
33 Correct 28 ms 14548 KB Output is correct
34 Correct 33 ms 14756 KB Output is correct
35 Correct 28 ms 14708 KB Output is correct
36 Correct 55 ms 25304 KB Output is correct
37 Correct 76 ms 26044 KB Output is correct
38 Correct 89 ms 26524 KB Output is correct
39 Correct 109 ms 26984 KB Output is correct
40 Correct 85 ms 25796 KB Output is correct
41 Correct 66 ms 22724 KB Output is correct
42 Correct 69 ms 22712 KB Output is correct
43 Correct 97 ms 26104 KB Output is correct
44 Correct 17 ms 14408 KB Output is correct
45 Correct 21 ms 14404 KB Output is correct
46 Correct 22 ms 14284 KB Output is correct
47 Correct 29 ms 14284 KB Output is correct
48 Correct 28 ms 14284 KB Output is correct
49 Correct 29 ms 14540 KB Output is correct
50 Correct 36 ms 14540 KB Output is correct
51 Correct 62 ms 14700 KB Output is correct
52 Correct 54 ms 14696 KB Output is correct
53 Correct 70 ms 25316 KB Output is correct
54 Correct 122 ms 26564 KB Output is correct
55 Correct 129 ms 27184 KB Output is correct
56 Correct 114 ms 25924 KB Output is correct
57 Correct 238 ms 32964 KB Output is correct
58 Correct 112 ms 26320 KB Output is correct
59 Correct 149 ms 28024 KB Output is correct