oj.uz

Submission #948633

# Submission time Handle Problem Language Result Execution time Memory
948633 2024-03-18T09:45:07 Z dimashhh Joker (BOI20_joker) C++17
14 / 100
 324 ms 262144 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = 2e5 + 5, MOD = 998244353;

int p[N],sz[N],n,m,q,d[N];
int cur_col = 0;
void reset(){
    cur_col = 0;
    for(int i = 1;i <= n;i++){
        sz[i] = 1;
        p[i] = i;
        d[i] = 0;
    }
}
pair<int, int> get(int v) {
    if(p[v] == v){
        return {v,0};
    }
    pair<int,int> x = get(p[v]);
    return {x.first,d[v]+x.second};
}
vector<array<int,5>> st;
bool merge(int a,int b){
    pair<int,int> x = get(a),y = get(b);
    if(sz[x.first] < sz[y.first]){
        swap(x,y);
    }
    a = x.first;
    b = y.first;
    if(a == b){
        if(x.second % 2 == y.second % 2){
            st.push_back({a,b,-1,1,0});
            cur_col++;
            return true;
        }
        st.push_back({a,b,-1,0,0});
        return false;
    }
    st.push_back({a,b,sz[a],p[b],d[b]});
    p[b] = a;
    sz[a] += sz[b];
    d[b] = (x.second % 2 == y.second % 2);
    return false;
}
queue<array<int,4>> qr;
void roll_back(){
    auto dd = st.back();
    st.pop_back();
    if(dd[2] == -1){
        cur_col -= dd[3];
        return;
    }
    sz[dd[0]] = dd[2];
    p[dd[1]] = dd[3];
    d[dd[1]] = dd[4];
}
int x[N],y[N],R[N];
void go(int l,int r,int _l,int _r){
    if(l > r) return;
    int t = (l + r) >> 1;
    int c = 0,c1 = 0;
    for(int i = l;i < t;++i){
        merge(x[i],y[i]);
    }
    R[t] = _r;
    while(R[t] >= t && cur_col == 0){
        c1++;
        merge(x[R[t]],y[R[t]]);
        R[t]--;
    }
    for(int i = 0;i < c1;i++){
        roll_back();
    }
    merge(x[t],y[t]);
    go(t+1,r,R[t],_r);
    for(int i = l;i <= t;i++){
        roll_back();
    }
    for(int i = _r;i > R[t];i--){
        merge(x[i],y[i]);
    }
    go(l,t-1,_l,R[t]);
}
void test(){
    cin >> n >> m >> q;
    for(int i = 1;i <= m;i++){
        cin >> x[i] >> y[i];
    }
    reset();
    go(1,m,1,m);
    reset();
    for(int i = 1;i <= m;i++){
        for(int j = 1;j < i;j++){
            merge(x[j],y[j]);
        }
        R[i] = m;
        while(R[i] >= i && cur_col == 0){
            merge(x[R[i]],y[R[i]]);
            R[i]--;
        }
        reset();
    }
    for(int i =1 ;i <= m;i++){
        R[i]++;
    }
    for(int i = 1;i <= q;i++){
        int l,r;
        cin >> l >> r;
        cout << (r < R[l] ? "YES\n":"NO\n");
    }
}
int main(){
    ios_base::sync_with_stdio(false);cin.tie(0);
    int T = 1;
//    cin >> T;
    while(T--){
        test();
    }
}

Compilation message

Joker.cpp: In function 'void go(int, int, int, int)':
Joker.cpp:65:9: warning: unused variable 'c' [-Wunused-variable]
   65 |     int c = 0,c1 = 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 4440 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4600 KB Output is correct
7 Correct 1 ms 4924 KB Output is correct
8 Correct 2 ms 5272 KB Output is correct
9 Correct 1 ms 5272 KB Output is correct
10 Correct 2 ms 5272 KB Output is correct
11 Correct 2 ms 5272 KB Output is correct
12 Correct 2 ms 5268 KB Output is correct
13 Correct 1 ms 5272 KB Output is correct
14 Correct 2 ms 5972 KB Output is correct
15 Correct 2 ms 5972 KB Output is correct
16 Correct 2 ms 5268 KB Output is correct
17 Correct 1 ms 5272 KB Output is correct
18 Correct 1 ms 5272 KB Output is correct
19 Correct 2 ms 5272 KB Output is correct
20 Correct 1 ms 5272 KB Output is correct
21 Correct 1 ms 5272 KB Output is correct
22 Correct 2 ms 5272 KB Output is correct
23 Correct 1 ms 5272 KB Output is correct
24 Correct 2 ms 5272 KB Output is correct
25 Correct 2 ms 5272 KB Output is correct
26 Correct 2 ms 5144 KB Output is correct
27 Correct 1 ms 5272 KB Output is correct
28 Correct 1 ms 5164 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4600 KB Output is correct
7 Correct 1 ms 4924 KB Output is correct
8 Correct 2 ms 5272 KB Output is correct
9 Correct 1 ms 5272 KB Output is correct
10 Correct 2 ms 5272 KB Output is correct
11 Correct 2 ms 5272 KB Output is correct
12 Correct 2 ms 5268 KB Output is correct
13 Correct 1 ms 5272 KB Output is correct
14 Correct 2 ms 5972 KB Output is correct
15 Correct 2 ms 5972 KB Output is correct
16 Correct 2 ms 5268 KB Output is correct
17 Correct 1 ms 5272 KB Output is correct
18 Correct 1 ms 5272 KB Output is correct
19 Correct 2 ms 5272 KB Output is correct
20 Correct 1 ms 5272 KB Output is correct
21 Correct 1 ms 5272 KB Output is correct
22 Correct 2 ms 5272 KB Output is correct
23 Correct 1 ms 5272 KB Output is correct
24 Correct 2 ms 5272 KB Output is correct
25 Correct 2 ms 5272 KB Output is correct
26 Correct 2 ms 5144 KB Output is correct
27 Correct 1 ms 5272 KB Output is correct
28 Correct 1 ms 5164 KB Output is correct
29 Correct 25 ms 26820 KB Output is correct
30 Correct 67 ms 88376 KB Output is correct
31 Correct 54 ms 87976 KB Output is correct
32 Correct 49 ms 86816 KB Output is correct
33 Correct 42 ms 46016 KB Output is correct
34 Correct 54 ms 87996 KB Output is correct
35 Correct 62 ms 88480 KB Output is correct
36 Correct 53 ms 88736 KB Output is correct
37 Correct 69 ms 88476 KB Output is correct
38 Correct 77 ms 88736 KB Output is correct
39 Correct 41 ms 45760 KB Output is correct
40 Correct 40 ms 45760 KB Output is correct
41 Correct 41 ms 46780 KB Output is correct
42 Correct 39 ms 46012 KB Output is correct
43 Correct 42 ms 47572 KB Output is correct
44 Correct 51 ms 88728 KB Output is correct
45 Correct 53 ms 87564 KB Output is correct
46 Correct 56 ms 86956 KB Output is correct
47 Correct 50 ms 88228 KB Output is correct
48 Correct 52 ms 87268 KB Output is correct
49 Correct 54 ms 87204 KB Output is correct
50 Correct 56 ms 87200 KB Output is correct
51 Correct 41 ms 46508 KB Output is correct
52 Correct 51 ms 87968 KB Output is correct
53 Correct 52 ms 88648 KB Output is correct
54 Correct 56 ms 86948 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Runtime error 324 ms 262144 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4600 KB Output is correct
7 Correct 1 ms 4924 KB Output is correct
8 Correct 2 ms 5272 KB Output is correct
9 Correct 1 ms 5272 KB Output is correct
10 Correct 2 ms 5272 KB Output is correct
11 Correct 2 ms 5272 KB Output is correct
12 Correct 2 ms 5268 KB Output is correct
13 Correct 1 ms 5272 KB Output is correct
14 Correct 2 ms 5972 KB Output is correct
15 Correct 2 ms 5972 KB Output is correct
16 Correct 2 ms 5268 KB Output is correct
17 Correct 1 ms 5272 KB Output is correct
18 Correct 1 ms 5272 KB Output is correct
19 Correct 2 ms 5272 KB Output is correct
20 Correct 1 ms 5272 KB Output is correct
21 Correct 1 ms 5272 KB Output is correct
22 Correct 2 ms 5272 KB Output is correct
23 Correct 1 ms 5272 KB Output is correct
24 Correct 2 ms 5272 KB Output is correct
25 Correct 2 ms 5272 KB Output is correct
26 Correct 2 ms 5144 KB Output is correct
27 Correct 1 ms 5272 KB Output is correct
28 Correct 1 ms 5164 KB Output is correct
29 Runtime error 324 ms 262144 KB Execution killed with signal 9
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 4440 KB Output is correct
2 Correct 1 ms 4440 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4600 KB Output is correct
7 Correct 1 ms 4924 KB Output is correct
8 Correct 2 ms 5272 KB Output is correct
9 Correct 1 ms 5272 KB Output is correct
10 Correct 2 ms 5272 KB Output is correct
11 Correct 2 ms 5272 KB Output is correct
12 Correct 2 ms 5268 KB Output is correct
13 Correct 1 ms 5272 KB Output is correct
14 Correct 2 ms 5972 KB Output is correct
15 Correct 2 ms 5972 KB Output is correct
16 Correct 2 ms 5268 KB Output is correct
17 Correct 1 ms 5272 KB Output is correct
18 Correct 1 ms 5272 KB Output is correct
19 Correct 2 ms 5272 KB Output is correct
20 Correct 1 ms 5272 KB Output is correct
21 Correct 1 ms 5272 KB Output is correct
22 Correct 2 ms 5272 KB Output is correct
23 Correct 1 ms 5272 KB Output is correct
24 Correct 2 ms 5272 KB Output is correct
25 Correct 2 ms 5272 KB Output is correct
26 Correct 2 ms 5144 KB Output is correct
27 Correct 1 ms 5272 KB Output is correct
28 Correct 1 ms 5164 KB Output is correct
29 Correct 25 ms 26820 KB Output is correct
30 Correct 67 ms 88376 KB Output is correct
31 Correct 54 ms 87976 KB Output is correct
32 Correct 49 ms 86816 KB Output is correct
33 Correct 42 ms 46016 KB Output is correct
34 Correct 54 ms 87996 KB Output is correct
35 Correct 62 ms 88480 KB Output is correct
36 Correct 53 ms 88736 KB Output is correct
37 Correct 69 ms 88476 KB Output is correct
38 Correct 77 ms 88736 KB Output is correct
39 Correct 41 ms 45760 KB Output is correct
40 Correct 40 ms 45760 KB Output is correct
41 Correct 41 ms 46780 KB Output is correct
42 Correct 39 ms 46012 KB Output is correct
43 Correct 42 ms 47572 KB Output is correct
44 Correct 51 ms 88728 KB Output is correct
45 Correct 53 ms 87564 KB Output is correct
46 Correct 56 ms 86956 KB Output is correct
47 Correct 50 ms 88228 KB Output is correct
48 Correct 52 ms 87268 KB Output is correct
49 Correct 54 ms 87204 KB Output is correct
50 Correct 56 ms 87200 KB Output is correct
51 Correct 41 ms 46508 KB Output is correct
52 Correct 51 ms 87968 KB Output is correct
53 Correct 52 ms 88648 KB Output is correct
54 Correct 56 ms 86948 KB Output is correct
55 Runtime error 299 ms 262144 KB Execution killed with signal 9
56 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 4440 KB Output is correct
3 Correct 1 ms 4444 KB Output is correct
4 Correct 1 ms 4440 KB Output is correct
5 Correct 1 ms 4444 KB Output is correct
6 Correct 1 ms 4600 KB Output is correct
7 Correct 1 ms 4924 KB Output is correct
8 Correct 2 ms 5272 KB Output is correct
9 Correct 1 ms 5272 KB Output is correct
10 Correct 2 ms 5272 KB Output is correct
11 Correct 2 ms 5272 KB Output is correct
12 Correct 2 ms 5268 KB Output is correct
13 Correct 1 ms 5272 KB Output is correct
14 Correct 2 ms 5972 KB Output is correct
15 Correct 2 ms 5972 KB Output is correct
16 Correct 2 ms 5268 KB Output is correct
17 Correct 1 ms 5272 KB Output is correct
18 Correct 1 ms 5272 KB Output is correct
19 Correct 2 ms 5272 KB Output is correct
20 Correct 1 ms 5272 KB Output is correct
21 Correct 1 ms 5272 KB Output is correct
22 Correct 2 ms 5272 KB Output is correct
23 Correct 1 ms 5272 KB Output is correct
24 Correct 2 ms 5272 KB Output is correct
25 Correct 2 ms 5272 KB Output is correct
26 Correct 2 ms 5144 KB Output is correct
27 Correct 1 ms 5272 KB Output is correct
28 Correct 1 ms 5164 KB Output is correct
29 Correct 25 ms 26820 KB Output is correct
30 Correct 67 ms 88376 KB Output is correct
31 Correct 54 ms 87976 KB Output is correct
32 Correct 49 ms 86816 KB Output is correct
33 Correct 42 ms 46016 KB Output is correct
34 Correct 54 ms 87996 KB Output is correct
35 Correct 62 ms 88480 KB Output is correct
36 Correct 53 ms 88736 KB Output is correct
37 Correct 69 ms 88476 KB Output is correct
38 Correct 77 ms 88736 KB Output is correct
39 Correct 41 ms 45760 KB Output is correct
40 Correct 40 ms 45760 KB Output is correct
41 Correct 41 ms 46780 KB Output is correct
42 Correct 39 ms 46012 KB Output is correct
43 Correct 42 ms 47572 KB Output is correct
44 Correct 51 ms 88728 KB Output is correct
45 Correct 53 ms 87564 KB Output is correct
46 Correct 56 ms 86956 KB Output is correct
47 Correct 50 ms 88228 KB Output is correct
48 Correct 52 ms 87268 KB Output is correct
49 Correct 54 ms 87204 KB Output is correct
50 Correct 56 ms 87200 KB Output is correct
51 Correct 41 ms 46508 KB Output is correct
52 Correct 51 ms 87968 KB Output is correct
53 Correct 52 ms 88648 KB Output is correct
54 Correct 56 ms 86948 KB Output is correct
55 Runtime error 324 ms 262144 KB Execution killed with signal 9
56 Halted 0 ms 0 KB -