oj.uz

Submission #971571

# Submission time Handle Problem Language Result Execution time Memory
971571 2024-04-29T02:39:05 Z Cookie Alternating Heights (CCO22_day1problem1) C++14
25 / 25
 260 ms 30696 KB 
#include<bits/stdc++.h>
#include<fstream>
using namespace std;
#define sz(a) (int)a.size()
#define ALL(v) v.begin(), v.end()
#define ALLR(v) v.rbegin(), v.rend()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
#define mpp make_pair
const ld PI = 3.14159265359, prec = 1e-9;;
//using u128 = __uint128_t;
//const int x[4] = {1, 0, -1, 0};
//const int y[4] = {0, -1, 0, 1};
const ll mod =1e9 + 7, pr = 31;
const int mxn = 5e5 + 5, mxq = 1e5 + 5, sq = 500, mxv = 5e4 + 1;
//const int base = (1 <<18);
const ll inf = 1e13 + 5, neg = -69420, inf2 = 1e14;
mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
// have fun!
int n, k, q;
int a[mxn + 1], nxt[mxn + 1], c[mxn + 1];
vt<pii>adj[mxn + 1];
bool cyc;
void dfs(int s, int l, int r){
    c[s] = 1;
    for(auto [v, id]: adj[s]){
        if(id < l || id >= r)continue;
        if(c[v] == 1)cyc = 1;
        else if(c[v] == 0){
            dfs(v, l, r);
        }
    }
    c[s] = 2;
}
bool check(int l, int r){
    for(int i = 1; i <= n; i++){
        c[i] = 0;
    }
    cyc = 0;
    for(int i = 1; i <= n; i++){
        if(!c[i])dfs(i, l, r);
    }
    return(!cyc);
}
void solve(){
    cin >> n >> k >> q;
    for(int i = 1; i <= n; i++)cin >> a[i];
    for(int i = 1; i < n; i++){
        if(i & 1)adj[a[i]].pb(mpp(a[i + 1], i));
        else adj[a[i + 1]].pb(mpp(a[i], i));
    }
    int r = 1;
    for(int i = 1; i <= n; i++){
        while(r < n && check(i, r + 1))r++;
        nxt[i] = r;
    }
    while(q--){
        int l, r; cin >> l >> r;
        cout << ((nxt[l] >= r) ? "YES" : "NO") << "\n";
    }
}



signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    //freopen("THREE.inp", "r", stdin);
    //freopen("THREE.out", "w", stdout);
    int tt; tt = 1;
    while(tt--){
        solve();

    }
    return(0);
}

Compilation message

Main.cpp: In function 'void dfs(int, int, int)':
Main.cpp:35:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   35 |     for(auto [v, id]: adj[s]){
      |              ^

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 219 ms 29268 KB Output is correct
2 Correct 221 ms 29392 KB Output is correct
3 Correct 227 ms 29392 KB Output is correct
4 Correct 123 ms 23800 KB Output is correct
5 Correct 127 ms 25848 KB Output is correct
6 Correct 226 ms 29268 KB Output is correct
7 Correct 218 ms 29268 KB Output is correct
8 Correct 221 ms 29264 KB Output is correct
9 Correct 227 ms 29732 KB Output is correct
10 Correct 216 ms 29776 KB Output is correct
11 Correct 190 ms 30684 KB Output is correct
12 Correct 218 ms 29776 KB Output is correct

Subtask #2
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 150 ms 27732 KB Output is correct
2 Correct 147 ms 27740 KB Output is correct
3 Correct 145 ms 27564 KB Output is correct
4 Correct 121 ms 25048 KB Output is correct
5 Correct 133 ms 25936 KB Output is correct
6 Correct 145 ms 27608 KB Output is correct
7 Correct 146 ms 27700 KB Output is correct
8 Correct 145 ms 27732 KB Output is correct
9 Correct 153 ms 28104 KB Output is correct
10 Correct 151 ms 28500 KB Output is correct
11 Correct 145 ms 28504 KB Output is correct
12 Correct 3 ms 16988 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 16988 KB Output is correct
2 Correct 107 ms 16988 KB Output is correct
3 Correct 106 ms 16872 KB Output is correct
4 Correct 73 ms 16988 KB Output is correct
5 Correct 4 ms 16984 KB Output is correct
6 Correct 5 ms 16988 KB Output is correct
7 Correct 94 ms 17104 KB Output is correct
8 Correct 92 ms 16976 KB Output is correct
9 Correct 92 ms 17112 KB Output is correct
10 Correct 60 ms 17116 KB Output is correct
11 Correct 61 ms 17108 KB Output is correct
12 Correct 61 ms 17124 KB Output is correct

Subtask #4
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 219 ms 29268 KB Output is correct
2 Correct 221 ms 29392 KB Output is correct
3 Correct 227 ms 29392 KB Output is correct
4 Correct 123 ms 23800 KB Output is correct
5 Correct 127 ms 25848 KB Output is correct
6 Correct 226 ms 29268 KB Output is correct
7 Correct 218 ms 29268 KB Output is correct
8 Correct 221 ms 29264 KB Output is correct
9 Correct 227 ms 29732 KB Output is correct
10 Correct 216 ms 29776 KB Output is correct
11 Correct 190 ms 30684 KB Output is correct
12 Correct 218 ms 29776 KB Output is correct
13 Correct 150 ms 27732 KB Output is correct
14 Correct 147 ms 27740 KB Output is correct
15 Correct 145 ms 27564 KB Output is correct
16 Correct 121 ms 25048 KB Output is correct
17 Correct 133 ms 25936 KB Output is correct
18 Correct 145 ms 27608 KB Output is correct
19 Correct 146 ms 27700 KB Output is correct
20 Correct 145 ms 27732 KB Output is correct
21 Correct 153 ms 28104 KB Output is correct
22 Correct 151 ms 28500 KB Output is correct
23 Correct 145 ms 28504 KB Output is correct
24 Correct 3 ms 16988 KB Output is correct
25 Correct 4 ms 16988 KB Output is correct
26 Correct 107 ms 16988 KB Output is correct
27 Correct 106 ms 16872 KB Output is correct
28 Correct 73 ms 16988 KB Output is correct
29 Correct 4 ms 16984 KB Output is correct
30 Correct 5 ms 16988 KB Output is correct
31 Correct 94 ms 17104 KB Output is correct
32 Correct 92 ms 16976 KB Output is correct
33 Correct 92 ms 17112 KB Output is correct
34 Correct 60 ms 17116 KB Output is correct
35 Correct 61 ms 17108 KB Output is correct
36 Correct 61 ms 17124 KB Output is correct
37 Correct 245 ms 30088 KB Output is correct
38 Correct 260 ms 29836 KB Output is correct
39 Correct 226 ms 29264 KB Output is correct
40 Correct 124 ms 24816 KB Output is correct
41 Correct 127 ms 26200 KB Output is correct
42 Correct 240 ms 29972 KB Output is correct
43 Correct 224 ms 30288 KB Output is correct
44 Correct 247 ms 30072 KB Output is correct
45 Correct 210 ms 30292 KB Output is correct
46 Correct 210 ms 30696 KB Output is correct
47 Correct 208 ms 30440 KB Output is correct