oj.uz

Submission #914677

# Submission time Handle Problem Language Result Execution time Memory
914677 2024-01-22T14:06:50 Z Amr Joker (BOI20_joker) C++14
49 / 100
 2000 ms 46552 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)};
            siz[yy] +=siz[xx];
            roll.push_back({xx,yy,1});
        }
        else
        {
            p[yy] = {xx,(paix.second==paiy.second)};
            siz[xx]+=siz[yy];
            roll.push_back({yy,xx,1});
        }
    }
}
void solve()
{

    cin >> n >> m >> q;
    sqr = 2e5+1;//sqr = max(2LL,m/int(sqrt(q)));
    for(int i = 1; i <= n; i++) p[i] = {i,0},siz[i] = 1;
    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];
    }
    for(int i = 1; i <= q; i++) qe[i][2] = i;
    sort(qe.begin()+1,qe.begin()+q+1,cmp);
    //for(int i = 1; i <= q; i++) cout << qe[i][1] << " "; cout << endl;
    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 14 ms 22872 KB Output is correct
2 Correct 15 ms 22876 KB Output is correct
3 Correct 15 ms 22872 KB Output is correct
4 Correct 15 ms 22872 KB Output is correct
5 Correct 15 ms 22876 KB Output is correct
6 Correct 14 ms 22876 KB Output is correct
7 Correct 19 ms 22876 KB Output is correct
8 Correct 16 ms 22876 KB Output is correct
9 Correct 16 ms 22900 KB Output is correct
10 Correct 18 ms 23132 KB Output is correct
11 Correct 16 ms 22876 KB Output is correct
12 Correct 15 ms 22872 KB Output is correct
13 Correct 17 ms 22872 KB Output is correct
14 Correct 15 ms 22876 KB Output is correct
15 Correct 16 ms 22872 KB Output is correct
16 Correct 17 ms 23060 KB Output is correct
17 Correct 16 ms 22892 KB Output is correct
18 Correct 16 ms 22876 KB Output is correct
19 Correct 17 ms 23020 KB Output is correct
20 Correct 19 ms 23128 KB Output is correct
21 Correct 16 ms 22876 KB Output is correct
22 Correct 16 ms 23060 KB Output is correct
23 Correct 17 ms 22872 KB Output is correct
24 Correct 19 ms 22872 KB Output is correct
25 Correct 16 ms 22872 KB Output is correct
26 Correct 16 ms 22872 KB Output is correct
27 Correct 16 ms 22876 KB Output is correct
28 Correct 16 ms 22984 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 22872 KB Output is correct
2 Correct 15 ms 22876 KB Output is correct
3 Correct 15 ms 22872 KB Output is correct
4 Correct 15 ms 22872 KB Output is correct
5 Correct 15 ms 22876 KB Output is correct
6 Correct 14 ms 22876 KB Output is correct
7 Correct 19 ms 22876 KB Output is correct
8 Correct 16 ms 22876 KB Output is correct
9 Correct 16 ms 22900 KB Output is correct
10 Correct 18 ms 23132 KB Output is correct
11 Correct 16 ms 22876 KB Output is correct
12 Correct 15 ms 22872 KB Output is correct
13 Correct 17 ms 22872 KB Output is correct
14 Correct 15 ms 22876 KB Output is correct
15 Correct 16 ms 22872 KB Output is correct
16 Correct 17 ms 23060 KB Output is correct
17 Correct 16 ms 22892 KB Output is correct
18 Correct 16 ms 22876 KB Output is correct
19 Correct 17 ms 23020 KB Output is correct
20 Correct 19 ms 23128 KB Output is correct
21 Correct 16 ms 22876 KB Output is correct
22 Correct 16 ms 23060 KB Output is correct
23 Correct 17 ms 22872 KB Output is correct
24 Correct 19 ms 22872 KB Output is correct
25 Correct 16 ms 22872 KB Output is correct
26 Correct 16 ms 22872 KB Output is correct
27 Correct 16 ms 22876 KB Output is correct
28 Correct 16 ms 22984 KB Output is correct
29 Correct 61 ms 23132 KB Output is correct
30 Correct 96 ms 23384 KB Output is correct
31 Correct 114 ms 23132 KB Output is correct
32 Correct 124 ms 23176 KB Output is correct
33 Correct 140 ms 23132 KB Output is correct
34 Correct 107 ms 23132 KB Output is correct
35 Correct 108 ms 23176 KB Output is correct
36 Correct 102 ms 23168 KB Output is correct
37 Correct 98 ms 23132 KB Output is correct
38 Correct 95 ms 23180 KB Output is correct
39 Correct 98 ms 23168 KB Output is correct
40 Correct 114 ms 23128 KB Output is correct
41 Correct 114 ms 23172 KB Output is correct
42 Correct 115 ms 23424 KB Output is correct
43 Correct 146 ms 23384 KB Output is correct
44 Correct 146 ms 23132 KB Output is correct
45 Correct 142 ms 23168 KB Output is correct
46 Correct 123 ms 23172 KB Output is correct
47 Correct 118 ms 23128 KB Output is correct
48 Correct 122 ms 23172 KB Output is correct
49 Correct 111 ms 23128 KB Output is correct
50 Correct 105 ms 23180 KB Output is correct
51 Correct 134 ms 23132 KB Output is correct
52 Correct 125 ms 23164 KB Output is correct
53 Correct 120 ms 23380 KB Output is correct
54 Correct 115 ms 23072 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 22872 KB Output is correct
2 Correct 15 ms 22876 KB Output is correct
3 Correct 247 ms 40796 KB Output is correct
4 Correct 242 ms 44404 KB Output is correct
5 Correct 244 ms 46552 KB Output is correct
6 Correct 227 ms 45304 KB Output is correct
7 Correct 239 ms 45072 KB Output is correct
8 Correct 225 ms 43000 KB Output is correct
9 Correct 235 ms 45560 KB Output is correct
10 Correct 233 ms 45820 KB Output is correct
11 Correct 238 ms 45304 KB Output is correct
12 Correct 240 ms 45052 KB Output is correct
13 Correct 230 ms 41392 KB Output is correct
14 Correct 237 ms 44232 KB Output is correct
15 Correct 236 ms 44820 KB Output is correct
16 Correct 262 ms 46156 KB Output is correct

Subtask #4
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 22872 KB Output is correct
2 Correct 15 ms 22876 KB Output is correct
3 Correct 15 ms 22872 KB Output is correct
4 Correct 15 ms 22872 KB Output is correct
5 Correct 15 ms 22876 KB Output is correct
6 Correct 14 ms 22876 KB Output is correct
7 Correct 19 ms 22876 KB Output is correct
8 Correct 16 ms 22876 KB Output is correct
9 Correct 16 ms 22900 KB Output is correct
10 Correct 18 ms 23132 KB Output is correct
11 Correct 16 ms 22876 KB Output is correct
12 Correct 15 ms 22872 KB Output is correct
13 Correct 17 ms 22872 KB Output is correct
14 Correct 15 ms 22876 KB Output is correct
15 Correct 16 ms 22872 KB Output is correct
16 Correct 17 ms 23060 KB Output is correct
17 Correct 16 ms 22892 KB Output is correct
18 Correct 16 ms 22876 KB Output is correct
19 Correct 17 ms 23020 KB Output is correct
20 Correct 19 ms 23128 KB Output is correct
21 Correct 16 ms 22876 KB Output is correct
22 Correct 16 ms 23060 KB Output is correct
23 Correct 17 ms 22872 KB Output is correct
24 Correct 19 ms 22872 KB Output is correct
25 Correct 16 ms 22872 KB Output is correct
26 Correct 16 ms 22872 KB Output is correct
27 Correct 16 ms 22876 KB Output is correct
28 Correct 16 ms 22984 KB Output is correct
29 Correct 247 ms 40796 KB Output is correct
30 Correct 242 ms 44404 KB Output is correct
31 Correct 244 ms 46552 KB Output is correct
32 Correct 227 ms 45304 KB Output is correct
33 Correct 239 ms 45072 KB Output is correct
34 Correct 225 ms 43000 KB Output is correct
35 Correct 235 ms 45560 KB Output is correct
36 Correct 233 ms 45820 KB Output is correct
37 Correct 238 ms 45304 KB Output is correct
38 Correct 240 ms 45052 KB Output is correct
39 Correct 230 ms 41392 KB Output is correct
40 Correct 237 ms 44232 KB Output is correct
41 Correct 236 ms 44820 KB Output is correct
42 Correct 262 ms 46156 KB Output is correct
43 Correct 1082 ms 45048 KB Output is correct
44 Correct 1020 ms 45272 KB Output is correct
45 Correct 1044 ms 46332 KB Output is correct
46 Correct 1043 ms 45912 KB Output is correct
47 Correct 1101 ms 45168 KB Output is correct
48 Correct 1260 ms 45032 KB Output is correct
49 Correct 1220 ms 46080 KB Output is correct
50 Correct 1188 ms 45356 KB Output is correct
51 Correct 1144 ms 46328 KB Output is correct
52 Correct 1048 ms 45280 KB Output is correct
53 Correct 1267 ms 40884 KB Output is correct
54 Correct 1122 ms 45220 KB Output is correct
55 Correct 1080 ms 45776 KB Output is correct
56 Correct 1077 ms 46324 KB Output is correct

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 22872 KB Output is correct
2 Correct 15 ms 22876 KB Output is correct
3 Correct 15 ms 22872 KB Output is correct
4 Correct 15 ms 22872 KB Output is correct
5 Correct 15 ms 22876 KB Output is correct
6 Correct 14 ms 22876 KB Output is correct
7 Correct 19 ms 22876 KB Output is correct
8 Correct 16 ms 22876 KB Output is correct
9 Correct 16 ms 22900 KB Output is correct
10 Correct 18 ms 23132 KB Output is correct
11 Correct 16 ms 22876 KB Output is correct
12 Correct 15 ms 22872 KB Output is correct
13 Correct 17 ms 22872 KB Output is correct
14 Correct 15 ms 22876 KB Output is correct
15 Correct 16 ms 22872 KB Output is correct
16 Correct 17 ms 23060 KB Output is correct
17 Correct 16 ms 22892 KB Output is correct
18 Correct 16 ms 22876 KB Output is correct
19 Correct 17 ms 23020 KB Output is correct
20 Correct 19 ms 23128 KB Output is correct
21 Correct 16 ms 22876 KB Output is correct
22 Correct 16 ms 23060 KB Output is correct
23 Correct 17 ms 22872 KB Output is correct
24 Correct 19 ms 22872 KB Output is correct
25 Correct 16 ms 22872 KB Output is correct
26 Correct 16 ms 22872 KB Output is correct
27 Correct 16 ms 22876 KB Output is correct
28 Correct 16 ms 22984 KB Output is correct
29 Correct 61 ms 23132 KB Output is correct
30 Correct 96 ms 23384 KB Output is correct
31 Correct 114 ms 23132 KB Output is correct
32 Correct 124 ms 23176 KB Output is correct
33 Correct 140 ms 23132 KB Output is correct
34 Correct 107 ms 23132 KB Output is correct
35 Correct 108 ms 23176 KB Output is correct
36 Correct 102 ms 23168 KB Output is correct
37 Correct 98 ms 23132 KB Output is correct
38 Correct 95 ms 23180 KB Output is correct
39 Correct 98 ms 23168 KB Output is correct
40 Correct 114 ms 23128 KB Output is correct
41 Correct 114 ms 23172 KB Output is correct
42 Correct 115 ms 23424 KB Output is correct
43 Correct 146 ms 23384 KB Output is correct
44 Correct 146 ms 23132 KB Output is correct
45 Correct 142 ms 23168 KB Output is correct
46 Correct 123 ms 23172 KB Output is correct
47 Correct 118 ms 23128 KB Output is correct
48 Correct 122 ms 23172 KB Output is correct
49 Correct 111 ms 23128 KB Output is correct
50 Correct 105 ms 23180 KB Output is correct
51 Correct 134 ms 23132 KB Output is correct
52 Correct 125 ms 23164 KB Output is correct
53 Correct 120 ms 23380 KB Output is correct
54 Correct 115 ms 23072 KB Output is correct
55 Execution timed out 2068 ms 40704 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 22872 KB Output is correct
2 Correct 15 ms 22876 KB Output is correct
3 Correct 15 ms 22872 KB Output is correct
4 Correct 15 ms 22872 KB Output is correct
5 Correct 15 ms 22876 KB Output is correct
6 Correct 14 ms 22876 KB Output is correct
7 Correct 19 ms 22876 KB Output is correct
8 Correct 16 ms 22876 KB Output is correct
9 Correct 16 ms 22900 KB Output is correct
10 Correct 18 ms 23132 KB Output is correct
11 Correct 16 ms 22876 KB Output is correct
12 Correct 15 ms 22872 KB Output is correct
13 Correct 17 ms 22872 KB Output is correct
14 Correct 15 ms 22876 KB Output is correct
15 Correct 16 ms 22872 KB Output is correct
16 Correct 17 ms 23060 KB Output is correct
17 Correct 16 ms 22892 KB Output is correct
18 Correct 16 ms 22876 KB Output is correct
19 Correct 17 ms 23020 KB Output is correct
20 Correct 19 ms 23128 KB Output is correct
21 Correct 16 ms 22876 KB Output is correct
22 Correct 16 ms 23060 KB Output is correct
23 Correct 17 ms 22872 KB Output is correct
24 Correct 19 ms 22872 KB Output is correct
25 Correct 16 ms 22872 KB Output is correct
26 Correct 16 ms 22872 KB Output is correct
27 Correct 16 ms 22876 KB Output is correct
28 Correct 16 ms 22984 KB Output is correct
29 Correct 61 ms 23132 KB Output is correct
30 Correct 96 ms 23384 KB Output is correct
31 Correct 114 ms 23132 KB Output is correct
32 Correct 124 ms 23176 KB Output is correct
33 Correct 140 ms 23132 KB Output is correct
34 Correct 107 ms 23132 KB Output is correct
35 Correct 108 ms 23176 KB Output is correct
36 Correct 102 ms 23168 KB Output is correct
37 Correct 98 ms 23132 KB Output is correct
38 Correct 95 ms 23180 KB Output is correct
39 Correct 98 ms 23168 KB Output is correct
40 Correct 114 ms 23128 KB Output is correct
41 Correct 114 ms 23172 KB Output is correct
42 Correct 115 ms 23424 KB Output is correct
43 Correct 146 ms 23384 KB Output is correct
44 Correct 146 ms 23132 KB Output is correct
45 Correct 142 ms 23168 KB Output is correct
46 Correct 123 ms 23172 KB Output is correct
47 Correct 118 ms 23128 KB Output is correct
48 Correct 122 ms 23172 KB Output is correct
49 Correct 111 ms 23128 KB Output is correct
50 Correct 105 ms 23180 KB Output is correct
51 Correct 134 ms 23132 KB Output is correct
52 Correct 125 ms 23164 KB Output is correct
53 Correct 120 ms 23380 KB Output is correct
54 Correct 115 ms 23072 KB Output is correct
55 Correct 247 ms 40796 KB Output is correct
56 Correct 242 ms 44404 KB Output is correct
57 Correct 244 ms 46552 KB Output is correct
58 Correct 227 ms 45304 KB Output is correct
59 Correct 239 ms 45072 KB Output is correct
60 Correct 225 ms 43000 KB Output is correct
61 Correct 235 ms 45560 KB Output is correct
62 Correct 233 ms 45820 KB Output is correct
63 Correct 238 ms 45304 KB Output is correct
64 Correct 240 ms 45052 KB Output is correct
65 Correct 230 ms 41392 KB Output is correct
66 Correct 237 ms 44232 KB Output is correct
67 Correct 236 ms 44820 KB Output is correct
68 Correct 262 ms 46156 KB Output is correct
69 Correct 1082 ms 45048 KB Output is correct
70 Correct 1020 ms 45272 KB Output is correct
71 Correct 1044 ms 46332 KB Output is correct
72 Correct 1043 ms 45912 KB Output is correct
73 Correct 1101 ms 45168 KB Output is correct
74 Correct 1260 ms 45032 KB Output is correct
75 Correct 1220 ms 46080 KB Output is correct
76 Correct 1188 ms 45356 KB Output is correct
77 Correct 1144 ms 46328 KB Output is correct
78 Correct 1048 ms 45280 KB Output is correct
79 Correct 1267 ms 40884 KB Output is correct
80 Correct 1122 ms 45220 KB Output is correct
81 Correct 1080 ms 45776 KB Output is correct
82 Correct 1077 ms 46324 KB Output is correct
83 Execution timed out 2068 ms 40704 KB Time limit exceeded
84 Halted 0 ms 0 KB -