oj.uz

Submission #914447

# Submission time Handle Problem Language Result Execution time Memory
914447 2024-01-22T07:15:09 Z Amr Joker (BOI20_joker) C++14
41 / 100
 871 ms 14096 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef long double ld;
#define S second
#define F first
#define all(x) (x).begin(),(x).end()
#define sz size()
#define Yes cout << "YES" << endl
#define No cout << "NO" << endl
#define pb(x) push_back(x);
#define endl '\n'
#define fast ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
const int N=3e5+7;
ll INF=INT_MAX,mod=1e9+7;
int TT=1;
ll power(ll x, unsigned int y)
{
    ll res = 1;
    x = x; // % mod;
    if (x == 0) return 0;
    while (y > 0)
    {
        if (y & 1) res = (res*x)  ; // % mod;
        y = y>>1;
        x = (x*x) ; // % mod;
    }
    return res;
}
pair<ll,ll> p[N];
ll siz[N];
pair<ll,ll> get(ll x)
{
    if(p[x].F==x) return p[x];
    pair<ll,ll> hi = get(p[x].F);
    return p[x] = {hi.F,hi.S^p[x].S};
}
pair<ll,ll> a[N];
ll ans[201];
void solve()
{

    ll n , m, q; cin >> n >> m >> q;

    ll lst = 0;
    ll ho = 199;
    if(n<=5000&&q<=5000&&m<=5000) ho = 5000;

    for(int i = 1; i <= m ; i++) cin >> a[i].F >> a[i].S;
    for(int j = 0; j <= min(m,ho); j++){
        for(int i = 1; i <= n; i++) siz[i] = 1,p[i] = {i,0};
        lst = 0;
        for(int i = 1; i <= j; i++)
        {
            ll x = a[i].F , y = a[i].S;
    pair<ll,ll> paix = get(x);
    pair<ll,ll> paiy = get(y);
    ll xx = paix.F, yy = paiy.F;
   // cout << xx << " " << yy << endl;
    if(xx!=yy)
    {
        bool b = (paix.S==paiy.S);
        if(siz[xx]<siz[yy])
        {
            p[xx] = {yy,b};
            siz[yy]+=siz[xx];

        }
        else
        {
            p[yy] = {xx,b};
            siz[xx]+=siz[yy];
        }
    }
    else
    {
        if(paix.S==paiy.S&&lst==0) {lst = i; break;}
    }
        }
       if(lst!=0) {ans[j] = m+1; continue;}


     lst = 0;
    for(int i = m; i >j; i--)
    {
        ll x = a[i].F , y = a[i].S;
        pair<ll,ll> paix = get(x);
        pair<ll,ll> paiy = get(y);
        ll xx = paix.F, yy = paiy.F;
       // cout << xx << " " << yy << endl;
        if(xx!=yy)
        {
            bool b = (paix.S==paiy.S);
            if(siz[xx]<siz[yy])
            {
                p[xx] = {yy,b};
                siz[yy]+=siz[xx];

            }
            else
            {
                p[yy] = {xx,b};
                siz[xx]+=siz[yy];
            }
        }
        else
        {
            if(paix.S==paiy.S&&lst==0) {lst = i; break;}
        }
    }
   ans[j] = lst;
}
    while(q--)
    {
        ll l, r; cin >> l >> r;
        if(r<ans[l-1])  cout << "YES" << endl;
        else cout << "NO" << endl;
    }
}
int main(){
    //freopen("friday.in","r",stdin);
    //freopen("friday.out","w",stdout);
    fast;
    //cin >> TT;
    while(TT--)
        solve();

    return 0;
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 2 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4696 KB Output is correct
14 Correct 2 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4560 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4440 KB Output is correct
19 Correct 2 ms 4444 KB Output is correct
20 Correct 1 ms 4440 KB Output is correct
21 Correct 1 ms 4568 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 2 ms 4444 KB Output is correct
24 Correct 1 ms 4576 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4440 KB Output is correct

Subtask #2
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 2 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4696 KB Output is correct
14 Correct 2 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4560 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4440 KB Output is correct
19 Correct 2 ms 4444 KB Output is correct
20 Correct 1 ms 4440 KB Output is correct
21 Correct 1 ms 4568 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 2 ms 4444 KB Output is correct
24 Correct 1 ms 4576 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4440 KB Output is correct
29 Incorrect 5 ms 4444 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 377 ms 13948 KB Output is correct
4 Correct 871 ms 13408 KB Output is correct
5 Correct 135 ms 13652 KB Output is correct
6 Correct 118 ms 13696 KB Output is correct
7 Correct 125 ms 13692 KB Output is correct
8 Correct 238 ms 11400 KB Output is correct
9 Correct 252 ms 13704 KB Output is correct
10 Correct 429 ms 13648 KB Output is correct
11 Correct 435 ms 13692 KB Output is correct
12 Correct 400 ms 13696 KB Output is correct
13 Correct 270 ms 11756 KB Output is correct
14 Correct 241 ms 11644 KB Output is correct
15 Correct 381 ms 13908 KB Output is correct
16 Correct 439 ms 13692 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 2 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4696 KB Output is correct
14 Correct 2 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4560 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4440 KB Output is correct
19 Correct 2 ms 4444 KB Output is correct
20 Correct 1 ms 4440 KB Output is correct
21 Correct 1 ms 4568 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 2 ms 4444 KB Output is correct
24 Correct 1 ms 4576 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4440 KB Output is correct
29 Correct 377 ms 13948 KB Output is correct
30 Correct 871 ms 13408 KB Output is correct
31 Correct 135 ms 13652 KB Output is correct
32 Correct 118 ms 13696 KB Output is correct
33 Correct 125 ms 13692 KB Output is correct
34 Correct 238 ms 11400 KB Output is correct
35 Correct 252 ms 13704 KB Output is correct
36 Correct 429 ms 13648 KB Output is correct
37 Correct 435 ms 13692 KB Output is correct
38 Correct 400 ms 13696 KB Output is correct
39 Correct 270 ms 11756 KB Output is correct
40 Correct 241 ms 11644 KB Output is correct
41 Correct 381 ms 13908 KB Output is correct
42 Correct 439 ms 13692 KB Output is correct
43 Correct 368 ms 13764 KB Output is correct
44 Correct 869 ms 13952 KB Output is correct
45 Correct 795 ms 13932 KB Output is correct
46 Correct 101 ms 13652 KB Output is correct
47 Correct 105 ms 13696 KB Output is correct
48 Correct 286 ms 13652 KB Output is correct
49 Correct 473 ms 13948 KB Output is correct
50 Correct 505 ms 11804 KB Output is correct
51 Correct 440 ms 14096 KB Output is correct
52 Correct 395 ms 14068 KB Output is correct
53 Correct 230 ms 11600 KB Output is correct
54 Correct 275 ms 11604 KB Output is correct
55 Correct 390 ms 13880 KB Output is correct
56 Correct 467 ms 13904 KB Output is correct

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 2 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4696 KB Output is correct
14 Correct 2 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4560 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4440 KB Output is correct
19 Correct 2 ms 4444 KB Output is correct
20 Correct 1 ms 4440 KB Output is correct
21 Correct 1 ms 4568 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 2 ms 4444 KB Output is correct
24 Correct 1 ms 4576 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4440 KB Output is correct
29 Incorrect 5 ms 4444 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4444 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4444 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4444 KB Output is correct
7 Correct 1 ms 4444 KB Output is correct
8 Correct 1 ms 4440 KB Output is correct
9 Correct 1 ms 4444 KB Output is correct
10 Correct 2 ms 4444 KB Output is correct
11 Correct 1 ms 4444 KB Output is correct
12 Correct 1 ms 4444 KB Output is correct
13 Correct 1 ms 4696 KB Output is correct
14 Correct 2 ms 4444 KB Output is correct
15 Correct 1 ms 4444 KB Output is correct
16 Correct 1 ms 4560 KB Output is correct
17 Correct 1 ms 4444 KB Output is correct
18 Correct 1 ms 4440 KB Output is correct
19 Correct 2 ms 4444 KB Output is correct
20 Correct 1 ms 4440 KB Output is correct
21 Correct 1 ms 4568 KB Output is correct
22 Correct 1 ms 4444 KB Output is correct
23 Correct 2 ms 4444 KB Output is correct
24 Correct 1 ms 4576 KB Output is correct
25 Correct 1 ms 4444 KB Output is correct
26 Correct 1 ms 4444 KB Output is correct
27 Correct 1 ms 4444 KB Output is correct
28 Correct 1 ms 4440 KB Output is correct
29 Incorrect 5 ms 4444 KB Output isn't correct
30 Halted 0 ms 0 KB -