oj.uz

Submission #948634

# Submission time Handle Problem Language Result Execution time Memory
948634 2024-03-18T09:48:09 Z dimashhh Joker (BOI20_joker) C++17
14 / 100
 2000 ms 15312 KB 
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

const int N = 3e5 + 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;
        int c1 = 0;
        while(R[i] >= i && cur_col == 0){
            merge(x[R[i]],y[R[i]]);
            c1++;
            R[i]--;
        }
//        cout << c1 << "x\n";
        for(int j = 0;j < c1 + i - 1;j++){
            roll_back();
        }
    }
    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 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6644 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6572 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6488 KB Output is correct
24 Correct 4 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 2 ms 6492 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6644 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6572 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6488 KB Output is correct
24 Correct 4 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 2 ms 6492 KB Output is correct
29 Correct 19 ms 6872 KB Output is correct
30 Correct 34 ms 6744 KB Output is correct
31 Correct 40 ms 6748 KB Output is correct
32 Correct 36 ms 6760 KB Output is correct
33 Correct 36 ms 6748 KB Output is correct
34 Correct 37 ms 6784 KB Output is correct
35 Correct 41 ms 6948 KB Output is correct
36 Correct 38 ms 6740 KB Output is correct
37 Correct 50 ms 6972 KB Output is correct
38 Correct 62 ms 6972 KB Output is correct
39 Correct 32 ms 6744 KB Output is correct
40 Correct 33 ms 6736 KB Output is correct
41 Correct 32 ms 6744 KB Output is correct
42 Correct 31 ms 6744 KB Output is correct
43 Correct 35 ms 6748 KB Output is correct
44 Correct 36 ms 6760 KB Output is correct
45 Correct 36 ms 6752 KB Output is correct
46 Correct 45 ms 6900 KB Output is correct
47 Correct 36 ms 6748 KB Output is correct
48 Correct 37 ms 6748 KB Output is correct
49 Correct 38 ms 6752 KB Output is correct
50 Correct 41 ms 6752 KB Output is correct
51 Correct 35 ms 6744 KB Output is correct
52 Correct 36 ms 6996 KB Output is correct
53 Correct 38 ms 7000 KB Output is correct
54 Correct 40 ms 6748 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Execution timed out 2032 ms 13400 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6644 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6572 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6488 KB Output is correct
24 Correct 4 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 2 ms 6492 KB Output is correct
29 Execution timed out 2032 ms 13400 KB Time limit exceeded
30 Halted 0 ms 0 KB -

Subtask #5
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6644 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6572 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6488 KB Output is correct
24 Correct 4 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 2 ms 6492 KB Output is correct
29 Correct 19 ms 6872 KB Output is correct
30 Correct 34 ms 6744 KB Output is correct
31 Correct 40 ms 6748 KB Output is correct
32 Correct 36 ms 6760 KB Output is correct
33 Correct 36 ms 6748 KB Output is correct
34 Correct 37 ms 6784 KB Output is correct
35 Correct 41 ms 6948 KB Output is correct
36 Correct 38 ms 6740 KB Output is correct
37 Correct 50 ms 6972 KB Output is correct
38 Correct 62 ms 6972 KB Output is correct
39 Correct 32 ms 6744 KB Output is correct
40 Correct 33 ms 6736 KB Output is correct
41 Correct 32 ms 6744 KB Output is correct
42 Correct 31 ms 6744 KB Output is correct
43 Correct 35 ms 6748 KB Output is correct
44 Correct 36 ms 6760 KB Output is correct
45 Correct 36 ms 6752 KB Output is correct
46 Correct 45 ms 6900 KB Output is correct
47 Correct 36 ms 6748 KB Output is correct
48 Correct 37 ms 6748 KB Output is correct
49 Correct 38 ms 6752 KB Output is correct
50 Correct 41 ms 6752 KB Output is correct
51 Correct 35 ms 6744 KB Output is correct
52 Correct 36 ms 6996 KB Output is correct
53 Correct 38 ms 7000 KB Output is correct
54 Correct 40 ms 6748 KB Output is correct
55 Execution timed out 2033 ms 15312 KB Time limit exceeded
56 Halted 0 ms 0 KB -

Subtask #6
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 6492 KB Output is correct
2 Correct 1 ms 6492 KB Output is correct
3 Correct 1 ms 6492 KB Output is correct
4 Correct 1 ms 6492 KB Output is correct
5 Correct 1 ms 6492 KB Output is correct
6 Correct 1 ms 6492 KB Output is correct
7 Correct 1 ms 6492 KB Output is correct
8 Correct 2 ms 6492 KB Output is correct
9 Correct 2 ms 6492 KB Output is correct
10 Correct 1 ms 6488 KB Output is correct
11 Correct 1 ms 6492 KB Output is correct
12 Correct 1 ms 6644 KB Output is correct
13 Correct 1 ms 6492 KB Output is correct
14 Correct 2 ms 6492 KB Output is correct
15 Correct 2 ms 6492 KB Output is correct
16 Correct 1 ms 6492 KB Output is correct
17 Correct 1 ms 6492 KB Output is correct
18 Correct 1 ms 6492 KB Output is correct
19 Correct 1 ms 6492 KB Output is correct
20 Correct 1 ms 6492 KB Output is correct
21 Correct 1 ms 6572 KB Output is correct
22 Correct 1 ms 6492 KB Output is correct
23 Correct 1 ms 6488 KB Output is correct
24 Correct 4 ms 6492 KB Output is correct
25 Correct 1 ms 6492 KB Output is correct
26 Correct 1 ms 6492 KB Output is correct
27 Correct 1 ms 6492 KB Output is correct
28 Correct 2 ms 6492 KB Output is correct
29 Correct 19 ms 6872 KB Output is correct
30 Correct 34 ms 6744 KB Output is correct
31 Correct 40 ms 6748 KB Output is correct
32 Correct 36 ms 6760 KB Output is correct
33 Correct 36 ms 6748 KB Output is correct
34 Correct 37 ms 6784 KB Output is correct
35 Correct 41 ms 6948 KB Output is correct
36 Correct 38 ms 6740 KB Output is correct
37 Correct 50 ms 6972 KB Output is correct
38 Correct 62 ms 6972 KB Output is correct
39 Correct 32 ms 6744 KB Output is correct
40 Correct 33 ms 6736 KB Output is correct
41 Correct 32 ms 6744 KB Output is correct
42 Correct 31 ms 6744 KB Output is correct
43 Correct 35 ms 6748 KB Output is correct
44 Correct 36 ms 6760 KB Output is correct
45 Correct 36 ms 6752 KB Output is correct
46 Correct 45 ms 6900 KB Output is correct
47 Correct 36 ms 6748 KB Output is correct
48 Correct 37 ms 6748 KB Output is correct
49 Correct 38 ms 6752 KB Output is correct
50 Correct 41 ms 6752 KB Output is correct
51 Correct 35 ms 6744 KB Output is correct
52 Correct 36 ms 6996 KB Output is correct
53 Correct 38 ms 7000 KB Output is correct
54 Correct 40 ms 6748 KB Output is correct
55 Execution timed out 2032 ms 13400 KB Time limit exceeded
56 Halted 0 ms 0 KB -