oj.uz

Submission #1106167

# Submission time Handle Problem Language Result Execution time Memory
1106167 2024-10-29T12:44:56 Z ro9669 Curtains (NOI23_curtains) C++17
100 / 100
 751 ms 81484 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
#define all(v) v.begin() , v.end()
#define sz(v) int(v.size())
#define unq(v) sort(all(v)); v.resize(unique(all(v)) - v.begin());
using namespace std;

typedef long long ll;
typedef pair<int , int> ii;
typedef pair<long long , int> lli;

const int maxN = int(5e5)+7;
const int inf = int(1e9)+7;

int n , m , q;
vector<int> event[maxN];
vector<ii> query[maxN];

struct node{
    int val , lazy;
    node(){
        val = lazy = inf;
    }
} st[4 * maxN];

#define lef(id) id * 2
#define rig(id) id * 2 + 1

void modify(int id , int x){
    st[id].val = min(st[id].val , x);
    st[id].lazy = min(st[id].lazy , x);
}

void down(int id , int l , int r){
    int &x = st[id].lazy;
    if (l == r) return;
    modify(lef(id) , x);
    modify(rig(id) , x);
}

void update(int id , int l , int r , int u , int v , int x){
    if (v < l || r < u) return;
    if (u <= l && r <= v){
        modify(id , x);
        //cout << l << " " << r << " " << st[id].val << "\n";
        return;
    }
    down(id , l , r);
    int mid = (l + r) / 2;
    update(lef(id) , l , mid , u , v , x);
    update(rig(id) , mid + 1 , r , u , v , x);
    st[id].val = max(st[lef(id)].val , st[rig(id)].val);
}

int get(int id , int l , int r , int u , int v){
    if (v < l || r < u) return -inf;
    if (u <= l && r <= v) return st[id].val;
    down(id , l , r);
    int mid = (l + r) / 2;
    return max(get(lef(id) , l , mid , u , v) , get(rig(id) , mid + 1 , r , u , v));
}

bool res[maxN];

void solve(){
    cin >> n >> m >> q;
    for (int i = 1 ; i <= m ; i++){
        int l , r;
        cin >> l >> r;
        event[l].push_back(r);
    }
    for (int i = 1 ; i <= q ; i++){
        int l , r;
        cin >> l >> r;
        query[l].push_back({r , i});
    }
    for (int i = n ; i >= 1 ; i--){
        for (auto it : event[i]){
            update(1 , 1 , n , i , it , it);
        }
        for (auto it : query[i]){
            res[it.se] = (get(1 , 1 , n , i , it.fi) <= it.fi);
        }
    }
    for (int i = 1 ; i <= q ; i++){
        if (res[i]) cout << "YES\n"; else cout << "NO\n";
    }
}

#define name "A"

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    if (fopen(name".INP" , "r")){
        freopen(name".INP" , "r" , stdin);
        freopen(name".OUT" , "w" , stdout);
    }
    int t = 1; //cin >> t;
    while (t--) solve();
    return 0;
}

Compilation message

curtains.cpp: In function 'int main()':
curtains.cpp:96:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   96 |         freopen(name".INP" , "r" , stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~
curtains.cpp:97:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   97 |         freopen(name".OUT" , "w" , stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 39760 KB Output is correct
2 Correct 7 ms 39760 KB Output is correct
3 Correct 9 ms 39760 KB Output is correct
4 Correct 8 ms 39760 KB Output is correct
5 Correct 8 ms 39760 KB Output is correct
6 Correct 9 ms 39760 KB Output is correct
7 Correct 8 ms 39760 KB Output is correct
8 Correct 7 ms 39760 KB Output is correct
9 Correct 8 ms 39760 KB Output is correct
10 Correct 8 ms 39760 KB Output is correct
11 Correct 8 ms 39760 KB Output is correct
12 Correct 8 ms 39868 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 39760 KB Output is correct
2 Correct 7 ms 39760 KB Output is correct
3 Correct 9 ms 39760 KB Output is correct
4 Correct 8 ms 39760 KB Output is correct
5 Correct 8 ms 39760 KB Output is correct
6 Correct 9 ms 39760 KB Output is correct
7 Correct 8 ms 39760 KB Output is correct
8 Correct 7 ms 39760 KB Output is correct
9 Correct 8 ms 39760 KB Output is correct
10 Correct 8 ms 39760 KB Output is correct
11 Correct 8 ms 39760 KB Output is correct
12 Correct 8 ms 39868 KB Output is correct
13 Correct 9 ms 40016 KB Output is correct
14 Correct 9 ms 40016 KB Output is correct
15 Correct 9 ms 40036 KB Output is correct
16 Correct 9 ms 40016 KB Output is correct
17 Correct 10 ms 39868 KB Output is correct
18 Correct 9 ms 40016 KB Output is correct
19 Correct 9 ms 40040 KB Output is correct
20 Correct 9 ms 40016 KB Output is correct
21 Correct 9 ms 40016 KB Output is correct

Subtask #3
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 39760 KB Output is correct
2 Correct 7 ms 39760 KB Output is correct
3 Correct 9 ms 39760 KB Output is correct
4 Correct 8 ms 39760 KB Output is correct
5 Correct 8 ms 39760 KB Output is correct
6 Correct 9 ms 39760 KB Output is correct
7 Correct 8 ms 39760 KB Output is correct
8 Correct 7 ms 39760 KB Output is correct
9 Correct 8 ms 39760 KB Output is correct
10 Correct 8 ms 39760 KB Output is correct
11 Correct 8 ms 39760 KB Output is correct
12 Correct 8 ms 39868 KB Output is correct
13 Correct 9 ms 40016 KB Output is correct
14 Correct 9 ms 40016 KB Output is correct
15 Correct 9 ms 40036 KB Output is correct
16 Correct 9 ms 40016 KB Output is correct
17 Correct 10 ms 39868 KB Output is correct
18 Correct 9 ms 40016 KB Output is correct
19 Correct 9 ms 40040 KB Output is correct
20 Correct 9 ms 40016 KB Output is correct
21 Correct 9 ms 40016 KB Output is correct
22 Correct 175 ms 52048 KB Output is correct
23 Correct 171 ms 52556 KB Output is correct
24 Correct 201 ms 53984 KB Output is correct
25 Correct 299 ms 59720 KB Output is correct
26 Correct 161 ms 52296 KB Output is correct
27 Correct 335 ms 59720 KB Output is correct
28 Correct 307 ms 59704 KB Output is correct
29 Correct 155 ms 52120 KB Output is correct
30 Correct 115 ms 49304 KB Output is correct
31 Correct 131 ms 50224 KB Output is correct
32 Correct 261 ms 57008 KB Output is correct
33 Correct 116 ms 49588 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 39760 KB Output is correct
2 Correct 9 ms 39760 KB Output is correct
3 Correct 9 ms 39760 KB Output is correct
4 Correct 10 ms 39760 KB Output is correct
5 Correct 9 ms 39872 KB Output is correct
6 Correct 9 ms 40016 KB Output is correct
7 Correct 10 ms 40016 KB Output is correct
8 Correct 127 ms 49440 KB Output is correct
9 Correct 141 ms 50100 KB Output is correct
10 Correct 276 ms 57020 KB Output is correct
11 Correct 120 ms 49612 KB Output is correct
12 Correct 101 ms 44988 KB Output is correct
13 Correct 95 ms 44736 KB Output is correct
14 Correct 78 ms 44996 KB Output is correct
15 Correct 82 ms 44992 KB Output is correct
16 Correct 81 ms 45124 KB Output is correct
17 Correct 85 ms 44996 KB Output is correct
18 Correct 543 ms 65836 KB Output is correct
19 Correct 562 ms 65976 KB Output is correct
20 Correct 434 ms 66488 KB Output is correct
21 Correct 428 ms 66480 KB Output is correct
22 Correct 449 ms 66476 KB Output is correct

Subtask #5
36.0 / 36.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 39760 KB Output is correct
2 Correct 7 ms 39760 KB Output is correct
3 Correct 9 ms 39760 KB Output is correct
4 Correct 8 ms 39760 KB Output is correct
5 Correct 8 ms 39760 KB Output is correct
6 Correct 9 ms 39760 KB Output is correct
7 Correct 8 ms 39760 KB Output is correct
8 Correct 7 ms 39760 KB Output is correct
9 Correct 8 ms 39760 KB Output is correct
10 Correct 8 ms 39760 KB Output is correct
11 Correct 8 ms 39760 KB Output is correct
12 Correct 8 ms 39868 KB Output is correct
13 Correct 9 ms 40016 KB Output is correct
14 Correct 9 ms 40016 KB Output is correct
15 Correct 9 ms 40036 KB Output is correct
16 Correct 9 ms 40016 KB Output is correct
17 Correct 10 ms 39868 KB Output is correct
18 Correct 9 ms 40016 KB Output is correct
19 Correct 9 ms 40040 KB Output is correct
20 Correct 9 ms 40016 KB Output is correct
21 Correct 9 ms 40016 KB Output is correct
22 Correct 91 ms 44360 KB Output is correct
23 Correct 94 ms 44356 KB Output is correct
24 Correct 127 ms 46340 KB Output is correct
25 Correct 130 ms 46408 KB Output is correct
26 Correct 111 ms 47780 KB Output is correct
27 Correct 109 ms 47824 KB Output is correct
28 Correct 102 ms 45640 KB Output is correct
29 Correct 107 ms 47432 KB Output is correct
30 Correct 120 ms 46244 KB Output is correct
31 Correct 123 ms 46408 KB Output is correct
32 Correct 117 ms 46664 KB Output is correct
33 Correct 120 ms 46932 KB Output is correct
34 Correct 112 ms 45952 KB Output is correct
35 Correct 118 ms 45956 KB Output is correct
36 Correct 112 ms 46180 KB Output is correct
37 Correct 96 ms 44988 KB Output is correct
38 Correct 96 ms 44736 KB Output is correct
39 Correct 83 ms 44944 KB Output is correct
40 Correct 88 ms 44992 KB Output is correct
41 Correct 81 ms 44996 KB Output is correct
42 Correct 77 ms 44992 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 39760 KB Output is correct
2 Correct 7 ms 39760 KB Output is correct
3 Correct 9 ms 39760 KB Output is correct
4 Correct 8 ms 39760 KB Output is correct
5 Correct 8 ms 39760 KB Output is correct
6 Correct 9 ms 39760 KB Output is correct
7 Correct 8 ms 39760 KB Output is correct
8 Correct 7 ms 39760 KB Output is correct
9 Correct 8 ms 39760 KB Output is correct
10 Correct 8 ms 39760 KB Output is correct
11 Correct 8 ms 39760 KB Output is correct
12 Correct 8 ms 39868 KB Output is correct
13 Correct 9 ms 40016 KB Output is correct
14 Correct 9 ms 40016 KB Output is correct
15 Correct 9 ms 40036 KB Output is correct
16 Correct 9 ms 40016 KB Output is correct
17 Correct 10 ms 39868 KB Output is correct
18 Correct 9 ms 40016 KB Output is correct
19 Correct 9 ms 40040 KB Output is correct
20 Correct 9 ms 40016 KB Output is correct
21 Correct 9 ms 40016 KB Output is correct
22 Correct 175 ms 52048 KB Output is correct
23 Correct 171 ms 52556 KB Output is correct
24 Correct 201 ms 53984 KB Output is correct
25 Correct 299 ms 59720 KB Output is correct
26 Correct 161 ms 52296 KB Output is correct
27 Correct 335 ms 59720 KB Output is correct
28 Correct 307 ms 59704 KB Output is correct
29 Correct 155 ms 52120 KB Output is correct
30 Correct 115 ms 49304 KB Output is correct
31 Correct 131 ms 50224 KB Output is correct
32 Correct 261 ms 57008 KB Output is correct
33 Correct 116 ms 49588 KB Output is correct
34 Correct 8 ms 39760 KB Output is correct
35 Correct 9 ms 39760 KB Output is correct
36 Correct 9 ms 39760 KB Output is correct
37 Correct 10 ms 39760 KB Output is correct
38 Correct 9 ms 39872 KB Output is correct
39 Correct 9 ms 40016 KB Output is correct
40 Correct 10 ms 40016 KB Output is correct
41 Correct 127 ms 49440 KB Output is correct
42 Correct 141 ms 50100 KB Output is correct
43 Correct 276 ms 57020 KB Output is correct
44 Correct 120 ms 49612 KB Output is correct
45 Correct 101 ms 44988 KB Output is correct
46 Correct 95 ms 44736 KB Output is correct
47 Correct 78 ms 44996 KB Output is correct
48 Correct 82 ms 44992 KB Output is correct
49 Correct 81 ms 45124 KB Output is correct
50 Correct 85 ms 44996 KB Output is correct
51 Correct 543 ms 65836 KB Output is correct
52 Correct 562 ms 65976 KB Output is correct
53 Correct 434 ms 66488 KB Output is correct
54 Correct 428 ms 66480 KB Output is correct
55 Correct 449 ms 66476 KB Output is correct
56 Correct 91 ms 44360 KB Output is correct
57 Correct 94 ms 44356 KB Output is correct
58 Correct 127 ms 46340 KB Output is correct
59 Correct 130 ms 46408 KB Output is correct
60 Correct 111 ms 47780 KB Output is correct
61 Correct 109 ms 47824 KB Output is correct
62 Correct 102 ms 45640 KB Output is correct
63 Correct 107 ms 47432 KB Output is correct
64 Correct 120 ms 46244 KB Output is correct
65 Correct 123 ms 46408 KB Output is correct
66 Correct 117 ms 46664 KB Output is correct
67 Correct 120 ms 46932 KB Output is correct
68 Correct 112 ms 45952 KB Output is correct
69 Correct 118 ms 45956 KB Output is correct
70 Correct 112 ms 46180 KB Output is correct
71 Correct 96 ms 44988 KB Output is correct
72 Correct 96 ms 44736 KB Output is correct
73 Correct 83 ms 44944 KB Output is correct
74 Correct 88 ms 44992 KB Output is correct
75 Correct 81 ms 44996 KB Output is correct
76 Correct 77 ms 44992 KB Output is correct
77 Correct 751 ms 73800 KB Output is correct
78 Correct 742 ms 73864 KB Output is correct
79 Correct 707 ms 81484 KB Output is correct
80 Correct 710 ms 81464 KB Output is correct
81 Correct 566 ms 79176 KB Output is correct
82 Correct 606 ms 80712 KB Output is correct
83 Correct 702 ms 73800 KB Output is correct
84 Correct 653 ms 73668 KB Output is correct
85 Correct 723 ms 74764 KB Output is correct
86 Correct 719 ms 70344 KB Output is correct
87 Correct 674 ms 69612 KB Output is correct
88 Correct 662 ms 78096 KB Output is correct