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Submission #914500

# Submission time Handle Problem Language Result Execution time Memory
914500 2024-01-22T09:30:09 Z Amr Joker (BOI20_joker) C++14
14 / 100
 2000 ms 36016 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;
}
ll n , m , q;
pair<ll,ll> p[N];
pair<ll,ll>  a[N];
vector<vector<ll> > qe(N,vector<ll> (3));
ll ans[N];
ll siz[N];
ll cycles = 0;
vector<vector<ll>> roll;
ll sqr = 4;
bool cmp(vector<ll> x, vector<ll> y)
{
    if(x[0]/sqr==y[0]/sqr) return x[1] > y[1];
    return x[0]<y[0];
}
pair<ll,ll> get(ll x)
{
    if(p[x].first==x) return {x,0};
    pair<ll,ll> ho = get(p[x].first);
    return {ho.first, p[x].second^ho.second};
}
void nonmerge(vector<ll> v)
{
    ll x= v[0] , y = v[1] , b = v[2];
    if(b)
    {
    siz[y] -= siz[x];
    p[x] = {x,0};
    return;
    }
    else
    {
        pair<ll,ll> paix = get(x);
        pair<ll,ll> paiy = get(y);
        if(paix.second==paiy.second) cycles--;
    }
}
void merg(ll x, ll y)
{

    pair<ll,ll> paix = get(x);
    pair<ll,ll> paiy = get(y);
    if(paix.first==paiy.first)
    {
        if(paix.second==paiy.second) cycles++;
        roll.push_back({x,y,0});
    }
    else
    {
        ll xx = paix.first , yy = paiy.first;
        if(siz[xx]<siz[yy])
        {
            p[xx] = {yy,(paix.second==paiy.second)};
            roll.push_back({xx,yy,1});
        }
        else
        {
            p[yy] = {xx,(paix.second==paiy.second)};
            roll.push_back({yy,xx,1});
        }
    }
}
void solve()
{

    cin >> n >> m >> q;
    sqr = max(2LL,m/int(sqrt(q))); sqr = 200000000;
    for(int i = 1; i <= n; i++) p[i] = {i,0};
    for(int i = 1; i <= m; i++) cin >> a[i].first >> a[i].second;
    for(int i = 1; i <= q; i++)
    {
        cin >> qe[i][0] >> qe[i][1];
        qe[i][2] = i;
    }
    sort(qe.begin()+1,qe.begin()+q+1,cmp);
    ll st = 0, en = m+1;
    for(int i = 1; i <= q; i++)
    {
        ll l = qe[i][0] , r = qe[i][1];
        while(roll.sz&&st>0)
        {
            //
            nonmerge(roll.back());
            roll.pop_back();
            st--;
        }

        while(roll.sz&&en<=r)
        {
            //
            nonmerge(roll.back());
            roll.pop_back();
            en++;
        }
        while(en>r+1)
        {
            en--;
            merg(a[en].first,a[en].second);

            // mege en
        }
        while(st<l-1)
        {
            st++;
            merg(a[st].first,a[st].second);
          //  cout << cycles << endl;
            // merge st;
        }
        //cout << endl;
        //for(int i = 1; i <= n; i++) cout << p[i].first << " " << p[i].second << endl;
        //cout << l << " " << r << ": " << st << " " << en<< " " << cycles  << endl;
         ans[qe[i][2]] = bool(cycles);
    }
    for(int i = 1; i <= q; i++)
    {
        if(ans[i]) Yes; else No;
    }
}
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 15 ms 22872 KB Output is correct
2 Correct 15 ms 22872 KB Output is correct
3 Correct 16 ms 22832 KB Output is correct
4 Correct 16 ms 23064 KB Output is correct
5 Correct 15 ms 22872 KB Output is correct
6 Correct 15 ms 22880 KB Output is correct
7 Correct 17 ms 22876 KB Output is correct
8 Correct 17 ms 23024 KB Output is correct
9 Correct 17 ms 22872 KB Output is correct
10 Correct 17 ms 22944 KB Output is correct
11 Correct 19 ms 22876 KB Output is correct
12 Correct 16 ms 22872 KB Output is correct
13 Correct 19 ms 22876 KB Output is correct
14 Correct 16 ms 22872 KB Output is correct
15 Correct 17 ms 22876 KB Output is correct
16 Correct 18 ms 22872 KB Output is correct
17 Correct 16 ms 22872 KB Output is correct
18 Correct 18 ms 22872 KB Output is correct
19 Correct 17 ms 22876 KB Output is correct
20 Correct 18 ms 22876 KB Output is correct
21 Correct 19 ms 22876 KB Output is correct
22 Correct 20 ms 23052 KB Output is correct
23 Correct 19 ms 22872 KB Output is correct
24 Correct 17 ms 22872 KB Output is correct
25 Correct 17 ms 23068 KB Output is correct
26 Correct 17 ms 22872 KB Output is correct
27 Correct 19 ms 22876 KB Output is correct
28 Correct 17 ms 22876 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 22872 KB Output is correct
2 Correct 15 ms 22872 KB Output is correct
3 Correct 16 ms 22832 KB Output is correct
4 Correct 16 ms 23064 KB Output is correct
5 Correct 15 ms 22872 KB Output is correct
6 Correct 15 ms 22880 KB Output is correct
7 Correct 17 ms 22876 KB Output is correct
8 Correct 17 ms 23024 KB Output is correct
9 Correct 17 ms 22872 KB Output is correct
10 Correct 17 ms 22944 KB Output is correct
11 Correct 19 ms 22876 KB Output is correct
12 Correct 16 ms 22872 KB Output is correct
13 Correct 19 ms 22876 KB Output is correct
14 Correct 16 ms 22872 KB Output is correct
15 Correct 17 ms 22876 KB Output is correct
16 Correct 18 ms 22872 KB Output is correct
17 Correct 16 ms 22872 KB Output is correct
18 Correct 18 ms 22872 KB Output is correct
19 Correct 17 ms 22876 KB Output is correct
20 Correct 18 ms 22876 KB Output is correct
21 Correct 19 ms 22876 KB Output is correct
22 Correct 20 ms 23052 KB Output is correct
23 Correct 19 ms 22872 KB Output is correct
24 Correct 17 ms 22872 KB Output is correct
25 Correct 17 ms 23068 KB Output is correct
26 Correct 17 ms 22872 KB Output is correct
27 Correct 19 ms 22876 KB Output is correct
28 Correct 17 ms 22876 KB Output is correct
29 Correct 60 ms 23132 KB Output is correct
30 Correct 180 ms 23132 KB Output is correct
31 Correct 457 ms 23212 KB Output is correct
32 Correct 727 ms 23384 KB Output is correct
33 Correct 896 ms 23192 KB Output is correct
34 Correct 271 ms 23376 KB Output is correct
35 Correct 282 ms 23132 KB Output is correct
36 Correct 1837 ms 23208 KB Output is correct
37 Correct 101 ms 23132 KB Output is correct
38 Correct 114 ms 23132 KB Output is correct
39 Correct 299 ms 23208 KB Output is correct
40 Correct 630 ms 23384 KB Output is correct
41 Correct 592 ms 23208 KB Output is correct
42 Correct 573 ms 23128 KB Output is correct
43 Correct 1420 ms 23204 KB Output is correct
44 Correct 1456 ms 23376 KB Output is correct
45 Correct 1084 ms 23200 KB Output is correct
46 Correct 733 ms 23212 KB Output is correct
47 Correct 878 ms 23200 KB Output is correct
48 Correct 400 ms 23128 KB Output is correct
49 Correct 326 ms 23212 KB Output is correct
50 Correct 311 ms 23128 KB Output is correct
51 Correct 959 ms 23204 KB Output is correct
52 Correct 790 ms 23208 KB Output is correct
53 Correct 573 ms 23208 KB Output is correct
54 Correct 279 ms 23376 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 22872 KB Output is correct
2 Correct 15 ms 22872 KB Output is correct
3 Execution timed out 2102 ms 36016 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 22872 KB Output is correct
2 Correct 15 ms 22872 KB Output is correct
3 Correct 16 ms 22832 KB Output is correct
4 Correct 16 ms 23064 KB Output is correct
5 Correct 15 ms 22872 KB Output is correct
6 Correct 15 ms 22880 KB Output is correct
7 Correct 17 ms 22876 KB Output is correct
8 Correct 17 ms 23024 KB Output is correct
9 Correct 17 ms 22872 KB Output is correct
10 Correct 17 ms 22944 KB Output is correct
11 Correct 19 ms 22876 KB Output is correct
12 Correct 16 ms 22872 KB Output is correct
13 Correct 19 ms 22876 KB Output is correct
14 Correct 16 ms 22872 KB Output is correct
15 Correct 17 ms 22876 KB Output is correct
16 Correct 18 ms 22872 KB Output is correct
17 Correct 16 ms 22872 KB Output is correct
18 Correct 18 ms 22872 KB Output is correct
19 Correct 17 ms 22876 KB Output is correct
20 Correct 18 ms 22876 KB Output is correct
21 Correct 19 ms 22876 KB Output is correct
22 Correct 20 ms 23052 KB Output is correct
23 Correct 19 ms 22872 KB Output is correct
24 Correct 17 ms 22872 KB Output is correct
25 Correct 17 ms 23068 KB Output is correct
26 Correct 17 ms 22872 KB Output is correct
27 Correct 19 ms 22876 KB Output is correct
28 Correct 17 ms 22876 KB Output is correct
29 Execution timed out 2102 ms 36016 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 22872 KB Output is correct
2 Correct 15 ms 22872 KB Output is correct
3 Correct 16 ms 22832 KB Output is correct
4 Correct 16 ms 23064 KB Output is correct
5 Correct 15 ms 22872 KB Output is correct
6 Correct 15 ms 22880 KB Output is correct
7 Correct 17 ms 22876 KB Output is correct
8 Correct 17 ms 23024 KB Output is correct
9 Correct 17 ms 22872 KB Output is correct
10 Correct 17 ms 22944 KB Output is correct
11 Correct 19 ms 22876 KB Output is correct
12 Correct 16 ms 22872 KB Output is correct
13 Correct 19 ms 22876 KB Output is correct
14 Correct 16 ms 22872 KB Output is correct
15 Correct 17 ms 22876 KB Output is correct
16 Correct 18 ms 22872 KB Output is correct
17 Correct 16 ms 22872 KB Output is correct
18 Correct 18 ms 22872 KB Output is correct
19 Correct 17 ms 22876 KB Output is correct
20 Correct 18 ms 22876 KB Output is correct
21 Correct 19 ms 22876 KB Output is correct
22 Correct 20 ms 23052 KB Output is correct
23 Correct 19 ms 22872 KB Output is correct
24 Correct 17 ms 22872 KB Output is correct
25 Correct 17 ms 23068 KB Output is correct
26 Correct 17 ms 22872 KB Output is correct
27 Correct 19 ms 22876 KB Output is correct
28 Correct 17 ms 22876 KB Output is correct
29 Correct 60 ms 23132 KB Output is correct
30 Correct 180 ms 23132 KB Output is correct
31 Correct 457 ms 23212 KB Output is correct
32 Correct 727 ms 23384 KB Output is correct
33 Correct 896 ms 23192 KB Output is correct
34 Correct 271 ms 23376 KB Output is correct
35 Correct 282 ms 23132 KB Output is correct
36 Correct 1837 ms 23208 KB Output is correct
37 Correct 101 ms 23132 KB Output is correct
38 Correct 114 ms 23132 KB Output is correct
39 Correct 299 ms 23208 KB Output is correct
40 Correct 630 ms 23384 KB Output is correct
41 Correct 592 ms 23208 KB Output is correct
42 Correct 573 ms 23128 KB Output is correct
43 Correct 1420 ms 23204 KB Output is correct
44 Correct 1456 ms 23376 KB Output is correct
45 Correct 1084 ms 23200 KB Output is correct
46 Correct 733 ms 23212 KB Output is correct
47 Correct 878 ms 23200 KB Output is correct
48 Correct 400 ms 23128 KB Output is correct
49 Correct 326 ms 23212 KB Output is correct
50 Correct 311 ms 23128 KB Output is correct
51 Correct 959 ms 23204 KB Output is correct
52 Correct 790 ms 23208 KB Output is correct
53 Correct 573 ms 23208 KB Output is correct
54 Correct 279 ms 23376 KB Output is correct
55 Execution timed out 2054 ms 32772 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 22872 KB Output is correct
2 Correct 15 ms 22872 KB Output is correct
3 Correct 16 ms 22832 KB Output is correct
4 Correct 16 ms 23064 KB Output is correct
5 Correct 15 ms 22872 KB Output is correct
6 Correct 15 ms 22880 KB Output is correct
7 Correct 17 ms 22876 KB Output is correct
8 Correct 17 ms 23024 KB Output is correct
9 Correct 17 ms 22872 KB Output is correct
10 Correct 17 ms 22944 KB Output is correct
11 Correct 19 ms 22876 KB Output is correct
12 Correct 16 ms 22872 KB Output is correct
13 Correct 19 ms 22876 KB Output is correct
14 Correct 16 ms 22872 KB Output is correct
15 Correct 17 ms 22876 KB Output is correct
16 Correct 18 ms 22872 KB Output is correct
17 Correct 16 ms 22872 KB Output is correct
18 Correct 18 ms 22872 KB Output is correct
19 Correct 17 ms 22876 KB Output is correct
20 Correct 18 ms 22876 KB Output is correct
21 Correct 19 ms 22876 KB Output is correct
22 Correct 20 ms 23052 KB Output is correct
23 Correct 19 ms 22872 KB Output is correct
24 Correct 17 ms 22872 KB Output is correct
25 Correct 17 ms 23068 KB Output is correct
26 Correct 17 ms 22872 KB Output is correct
27 Correct 19 ms 22876 KB Output is correct
28 Correct 17 ms 22876 KB Output is correct
29 Correct 60 ms 23132 KB Output is correct
30 Correct 180 ms 23132 KB Output is correct
31 Correct 457 ms 23212 KB Output is correct
32 Correct 727 ms 23384 KB Output is correct
33 Correct 896 ms 23192 KB Output is correct
34 Correct 271 ms 23376 KB Output is correct
35 Correct 282 ms 23132 KB Output is correct
36 Correct 1837 ms 23208 KB Output is correct
37 Correct 101 ms 23132 KB Output is correct
38 Correct 114 ms 23132 KB Output is correct
39 Correct 299 ms 23208 KB Output is correct
40 Correct 630 ms 23384 KB Output is correct
41 Correct 592 ms 23208 KB Output is correct
42 Correct 573 ms 23128 KB Output is correct
43 Correct 1420 ms 23204 KB Output is correct
44 Correct 1456 ms 23376 KB Output is correct
45 Correct 1084 ms 23200 KB Output is correct
46 Correct 733 ms 23212 KB Output is correct
47 Correct 878 ms 23200 KB Output is correct
48 Correct 400 ms 23128 KB Output is correct
49 Correct 326 ms 23212 KB Output is correct
50 Correct 311 ms 23128 KB Output is correct
51 Correct 959 ms 23204 KB Output is correct
52 Correct 790 ms 23208 KB Output is correct
53 Correct 573 ms 23208 KB Output is correct
54 Correct 279 ms 23376 KB Output is correct
55 Execution timed out 2102 ms 36016 KB Time limit exceeded
56 Halted 0 ms 0 KB -