oj.uz

Submission #1108709

# Submission time Handle Problem Language Result Execution time Memory
1108709 2024-11-04T20:04:18 Z vladilius Escape Route 2 (JOI24_escape2) C++17
100 / 100
 2297 ms 28572 KB 
#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
#define pb push_back
#define ff first
#define ss second
const ll inf = numeric_limits<ll> :: max();

int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    
    int n, D; cin>>n>>D;
    vector<int> x(n);
    vector<pii> t[n];
    for (int i = 1; i < n; i++){
        cin>>x[i];
        for (int j = 0; j < x[i]; j++){
            int a, b; cin>>a>>b;
            t[i].pb({a, b});
        }
    }
    
    for (int i = 1; i < n; i++){
        sort(t[i].begin(), t[i].end());
        vector<pii> nw;
        for (int j = 0; j < x[i]; j++){
            while (!nw.empty() && nw.back().ss >= t[i][j].ss){
                nw.pop_back();
            }
            if (nw.empty() || nw.back().ff != t[i][j].ff){
                nw.pb(t[i][j]);
            }
        }
        
        t[i] = nw;
        x[i] = (int) t[i].size();
    }
    
    vector<int> p(n);
    for (int i = 1; i < n; i++){
        p[i] = p[i - 1] + x[i];
    }
    int S = p.back();
    vector<int> g(S);
    vector<bool> e(S);
    for (int i = 1; i + 1 < n; i++){
        int k = x[i + 1] - 1, mn = 0;
        for (int j = x[i] - 1; j >= 0; j--){
            while (k >= 0 && t[i + 1][k].ff >= t[i][j].ss){
                mn = k--;
            }
            g[p[i - 1] + j] = p[i] + mn;
            e[p[i - 1] + j] = (t[i][j].ss > t[i + 1][mn].ff);
        }
    }
    
    const int lg = log2(S);
    vector<vector<pii>> sp(S, vector<pii>(lg + 1));
    for (int i = 0; i < S; i++) sp[i][0] = {g[i], e[i]};
    for (int j = 1; j <= lg; j++){
        for (int i = 0; i + (1 << j) <= S; i++){
            sp[i][j] = {sp[sp[i][j - 1].ff][j - 1].ff, sp[i][j - 1].ss + sp[sp[i][j - 1].ff][j - 1].ss};
        }
    }
    
    auto get = [&](int l, int r){
        ll out = inf;
        for (int i = 0; i < x[l]; i++){
            int tt = r - l - 1, f = p[l - 1] + i, cc = 0;
            for (int j = lg; j >= 0; j--){
                int k = (1 << j);
                if (tt >= k){
                    cc += sp[f][j].ss;
                    f = sp[f][j].ff;
                    tt -= k;
                }
            }
            out = min(out, 1LL * D * cc + (t[r - 1][f - p[r - 2]].ss - t[l][i].ff));
        }
        return out;
    };
    
    vector<vector<ll>> out;
    vector<int> all;
    const int A = 700;
    ll mn;
    for (int i = 1; i < n; i++){
        if (x[i] <= A) continue;
        all.pb(i);
        vector<pair<int, ll>> st, nw;
        for (int j = 0; j < x[i]; j++){
            st.pb({p[i - 1] + j, t[i][j].ss - t[i][j].ff});
        }
        vector<ll> add;
        for (int j = 0; j <= i; j++) add.pb(0);
        for (int j = i + 1; j <= n; j++){
            mn = inf;
            for (auto [x, y]: st){
                mn = min(mn, y);
            }
            add.pb(mn);
            if (j == n) break;
            for (auto& [x, y]: st){
                y += D * e[x] + (t[j][g[x] - p[j - 1]].ss - t[j - 1][x - p[j - 2]].ss);
                x = g[x];
            }
            nw.clear();
            int k = 0;
            while (k < st.size()){
                int h = k; mn = inf;
                while (h < st.size() && st[k].ff == st[h].ff){
                    mn = min(mn, st[h].ss);
                    h++;
                }
                nw.pb({st[k].ff, mn});
                k = h;
            }
            st = nw;
        }
        out.pb(add);
    }
    
    vector<int> :: iterator it;
    int q; cin>>q;
    for (int i = 1; i <= q; i++){
        int l, r; cin>>l>>r;
        if (x[l] <= A){
            cout<<get(l, r)<<"\n";
        }
        else {
            it = lower_bound(all.begin(), all.end(), l);
            int j = (int) (it - all.begin());
            cout<<out[j][r]<<"\n";
        }
    }
}

Compilation message

Main.cpp: In function 'int main()':
Main.cpp:112:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  112 |             while (k < st.size()){
      |                    ~~^~~~~~~~~~~
Main.cpp:114:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  114 |                 while (h < st.size() && st[k].ff == st[h].ff){
      |                        ~~^~~~~~~~~~~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 37 ms 3320 KB Output is correct
3 Correct 51 ms 3664 KB Output is correct
4 Correct 78 ms 4692 KB Output is correct
5 Correct 59 ms 3656 KB Output is correct
6 Correct 74 ms 4496 KB Output is correct
7 Correct 72 ms 4636 KB Output is correct
8 Correct 52 ms 3656 KB Output is correct
9 Correct 76 ms 4544 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 37 ms 3320 KB Output is correct
3 Correct 51 ms 3664 KB Output is correct
4 Correct 78 ms 4692 KB Output is correct
5 Correct 59 ms 3656 KB Output is correct
6 Correct 74 ms 4496 KB Output is correct
7 Correct 72 ms 4636 KB Output is correct
8 Correct 52 ms 3656 KB Output is correct
9 Correct 76 ms 4544 KB Output is correct
10 Correct 1 ms 504 KB Output is correct
11 Correct 83 ms 4088 KB Output is correct
12 Correct 83 ms 4168 KB Output is correct
13 Correct 78 ms 3972 KB Output is correct
14 Correct 78 ms 4168 KB Output is correct
15 Correct 74 ms 4424 KB Output is correct
16 Correct 38 ms 3408 KB Output is correct
17 Correct 68 ms 4564 KB Output is correct
18 Correct 80 ms 4488 KB Output is correct
19 Correct 71 ms 4512 KB Output is correct
20 Correct 68 ms 4424 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 37 ms 3320 KB Output is correct
3 Correct 51 ms 3664 KB Output is correct
4 Correct 78 ms 4692 KB Output is correct
5 Correct 59 ms 3656 KB Output is correct
6 Correct 74 ms 4496 KB Output is correct
7 Correct 72 ms 4636 KB Output is correct
8 Correct 52 ms 3656 KB Output is correct
9 Correct 76 ms 4544 KB Output is correct
10 Correct 207 ms 21780 KB Output is correct
11 Correct 376 ms 27976 KB Output is correct
12 Correct 361 ms 28048 KB Output is correct
13 Correct 325 ms 26696 KB Output is correct
14 Correct 244 ms 27976 KB Output is correct
15 Correct 307 ms 27976 KB Output is correct
16 Correct 160 ms 21576 KB Output is correct
17 Correct 282 ms 27976 KB Output is correct
18 Correct 160 ms 22344 KB Output is correct
19 Correct 87 ms 22344 KB Output is correct
20 Correct 100 ms 22344 KB Output is correct
21 Correct 101 ms 22344 KB Output is correct

Subtask #4
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 37 ms 3320 KB Output is correct
3 Correct 51 ms 3664 KB Output is correct
4 Correct 78 ms 4692 KB Output is correct
5 Correct 59 ms 3656 KB Output is correct
6 Correct 74 ms 4496 KB Output is correct
7 Correct 72 ms 4636 KB Output is correct
8 Correct 52 ms 3656 KB Output is correct
9 Correct 76 ms 4544 KB Output is correct
10 Correct 1 ms 504 KB Output is correct
11 Correct 83 ms 4088 KB Output is correct
12 Correct 83 ms 4168 KB Output is correct
13 Correct 78 ms 3972 KB Output is correct
14 Correct 78 ms 4168 KB Output is correct
15 Correct 74 ms 4424 KB Output is correct
16 Correct 38 ms 3408 KB Output is correct
17 Correct 68 ms 4564 KB Output is correct
18 Correct 80 ms 4488 KB Output is correct
19 Correct 71 ms 4512 KB Output is correct
20 Correct 68 ms 4424 KB Output is correct
21 Correct 207 ms 21780 KB Output is correct
22 Correct 376 ms 27976 KB Output is correct
23 Correct 361 ms 28048 KB Output is correct
24 Correct 325 ms 26696 KB Output is correct
25 Correct 244 ms 27976 KB Output is correct
26 Correct 307 ms 27976 KB Output is correct
27 Correct 160 ms 21576 KB Output is correct
28 Correct 282 ms 27976 KB Output is correct
29 Correct 160 ms 22344 KB Output is correct
30 Correct 87 ms 22344 KB Output is correct
31 Correct 100 ms 22344 KB Output is correct
32 Correct 101 ms 22344 KB Output is correct
33 Correct 301 ms 23304 KB Output is correct
34 Correct 378 ms 23372 KB Output is correct
35 Correct 243 ms 21324 KB Output is correct
36 Correct 243 ms 21320 KB Output is correct
37 Correct 212 ms 22344 KB Output is correct
38 Correct 198 ms 20272 KB Output is correct
39 Correct 254 ms 25788 KB Output is correct
40 Correct 235 ms 17480 KB Output is correct
41 Correct 174 ms 18248 KB Output is correct
42 Correct 226 ms 23888 KB Output is correct
43 Correct 176 ms 17992 KB Output is correct
44 Correct 213 ms 19276 KB Output is correct
45 Correct 104 ms 20552 KB Output is correct
46 Correct 101 ms 19016 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 813 ms 17596 KB Output is correct
4 Correct 826 ms 17480 KB Output is correct
5 Correct 945 ms 17552 KB Output is correct
6 Correct 1018 ms 17480 KB Output is correct
7 Correct 965 ms 17484 KB Output is correct
8 Correct 320 ms 10060 KB Output is correct
9 Correct 588 ms 17888 KB Output is correct
10 Correct 41 ms 10220 KB Output is correct
11 Correct 129 ms 22608 KB Output is correct
12 Correct 104 ms 20552 KB Output is correct
13 Correct 110 ms 19016 KB Output is correct
14 Correct 87 ms 19940 KB Output is correct
15 Correct 79 ms 19892 KB Output is correct
16 Correct 77 ms 18504 KB Output is correct
17 Correct 105 ms 23364 KB Output is correct
18 Correct 120 ms 17784 KB Output is correct
19 Correct 560 ms 17480 KB Output is correct
20 Correct 491 ms 21272 KB Output is correct
21 Correct 413 ms 21064 KB Output is correct
22 Correct 680 ms 19272 KB Output is correct
23 Correct 522 ms 19272 KB Output is correct
24 Correct 64 ms 20872 KB Output is correct
25 Correct 62 ms 21396 KB Output is correct
26 Correct 77 ms 22528 KB Output is correct
27 Correct 106 ms 22252 KB Output is correct
28 Correct 108 ms 22392 KB Output is correct
29 Correct 100 ms 22344 KB Output is correct
30 Correct 57 ms 4288 KB Output is correct
31 Correct 101 ms 2060 KB Output is correct
32 Correct 77 ms 5768 KB Output is correct
33 Correct 55 ms 2496 KB Output is correct
34 Correct 78 ms 3920 KB Output is correct

Subtask #6
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 37 ms 3320 KB Output is correct
3 Correct 51 ms 3664 KB Output is correct
4 Correct 78 ms 4692 KB Output is correct
5 Correct 59 ms 3656 KB Output is correct
6 Correct 74 ms 4496 KB Output is correct
7 Correct 72 ms 4636 KB Output is correct
8 Correct 52 ms 3656 KB Output is correct
9 Correct 76 ms 4544 KB Output is correct
10 Correct 1 ms 504 KB Output is correct
11 Correct 83 ms 4088 KB Output is correct
12 Correct 83 ms 4168 KB Output is correct
13 Correct 78 ms 3972 KB Output is correct
14 Correct 78 ms 4168 KB Output is correct
15 Correct 74 ms 4424 KB Output is correct
16 Correct 38 ms 3408 KB Output is correct
17 Correct 68 ms 4564 KB Output is correct
18 Correct 80 ms 4488 KB Output is correct
19 Correct 71 ms 4512 KB Output is correct
20 Correct 68 ms 4424 KB Output is correct
21 Correct 207 ms 21780 KB Output is correct
22 Correct 376 ms 27976 KB Output is correct
23 Correct 361 ms 28048 KB Output is correct
24 Correct 325 ms 26696 KB Output is correct
25 Correct 244 ms 27976 KB Output is correct
26 Correct 307 ms 27976 KB Output is correct
27 Correct 160 ms 21576 KB Output is correct
28 Correct 282 ms 27976 KB Output is correct
29 Correct 160 ms 22344 KB Output is correct
30 Correct 87 ms 22344 KB Output is correct
31 Correct 100 ms 22344 KB Output is correct
32 Correct 101 ms 22344 KB Output is correct
33 Correct 301 ms 23304 KB Output is correct
34 Correct 378 ms 23372 KB Output is correct
35 Correct 243 ms 21324 KB Output is correct
36 Correct 243 ms 21320 KB Output is correct
37 Correct 212 ms 22344 KB Output is correct
38 Correct 198 ms 20272 KB Output is correct
39 Correct 254 ms 25788 KB Output is correct
40 Correct 235 ms 17480 KB Output is correct
41 Correct 174 ms 18248 KB Output is correct
42 Correct 226 ms 23888 KB Output is correct
43 Correct 176 ms 17992 KB Output is correct
44 Correct 213 ms 19276 KB Output is correct
45 Correct 104 ms 20552 KB Output is correct
46 Correct 101 ms 19016 KB Output is correct
47 Correct 1 ms 336 KB Output is correct
48 Correct 1 ms 336 KB Output is correct
49 Correct 813 ms 17596 KB Output is correct
50 Correct 826 ms 17480 KB Output is correct
51 Correct 945 ms 17552 KB Output is correct
52 Correct 1018 ms 17480 KB Output is correct
53 Correct 965 ms 17484 KB Output is correct
54 Correct 320 ms 10060 KB Output is correct
55 Correct 588 ms 17888 KB Output is correct
56 Correct 41 ms 10220 KB Output is correct
57 Correct 129 ms 22608 KB Output is correct
58 Correct 104 ms 20552 KB Output is correct
59 Correct 110 ms 19016 KB Output is correct
60 Correct 87 ms 19940 KB Output is correct
61 Correct 79 ms 19892 KB Output is correct
62 Correct 77 ms 18504 KB Output is correct
63 Correct 105 ms 23364 KB Output is correct
64 Correct 120 ms 17784 KB Output is correct
65 Correct 560 ms 17480 KB Output is correct
66 Correct 491 ms 21272 KB Output is correct
67 Correct 413 ms 21064 KB Output is correct
68 Correct 680 ms 19272 KB Output is correct
69 Correct 522 ms 19272 KB Output is correct
70 Correct 64 ms 20872 KB Output is correct
71 Correct 62 ms 21396 KB Output is correct
72 Correct 77 ms 22528 KB Output is correct
73 Correct 106 ms 22252 KB Output is correct
74 Correct 108 ms 22392 KB Output is correct
75 Correct 100 ms 22344 KB Output is correct
76 Correct 57 ms 4288 KB Output is correct
77 Correct 101 ms 2060 KB Output is correct
78 Correct 77 ms 5768 KB Output is correct
79 Correct 55 ms 2496 KB Output is correct
80 Correct 78 ms 3920 KB Output is correct
81 Correct 1946 ms 21284 KB Output is correct
82 Correct 1810 ms 21320 KB Output is correct
83 Correct 1712 ms 21096 KB Output is correct
84 Correct 1724 ms 21080 KB Output is correct
85 Correct 1676 ms 21064 KB Output is correct
86 Correct 668 ms 13128 KB Output is correct
87 Correct 1213 ms 22088 KB Output is correct
88 Correct 1359 ms 21936 KB Output is correct
89 Correct 1431 ms 21832 KB Output is correct
90 Correct 560 ms 14152 KB Output is correct
91 Correct 70 ms 11204 KB Output is correct
92 Correct 173 ms 24696 KB Output is correct
93 Correct 205 ms 24584 KB Output is correct
94 Correct 176 ms 23368 KB Output is correct
95 Correct 219 ms 28572 KB Output is correct
96 Correct 328 ms 22116 KB Output is correct
97 Correct 1674 ms 21840 KB Output is correct
98 Correct 1741 ms 26248 KB Output is correct
99 Correct 1300 ms 26028 KB Output is correct
100 Correct 2297 ms 24348 KB Output is correct
101 Correct 1676 ms 24316 KB Output is correct
102 Correct 141 ms 25628 KB Output is correct
103 Correct 133 ms 26448 KB Output is correct
104 Correct 155 ms 27580 KB Output is correct
105 Correct 120 ms 5624 KB Output is correct
106 Correct 246 ms 4392 KB Output is correct
107 Correct 195 ms 9092 KB Output is correct
108 Correct 150 ms 5116 KB Output is correct
109 Correct 247 ms 6676 KB Output is correct