oj.uz

Submission #865156

# Submission time Handle Problem Language Result Execution time Memory
865156 2023-10-24T06:06:48 Z vjudge1 Birthday gift (IZhO18_treearray) C++17
12 / 100
 2 ms 604 KB 
/// tree bends in youth
/// 24  .10.2023
/// success is doing same thing in every single day!!!
#include <bits/stdc++.h>
#define ll long long
#define pb push_back
#define all(x) x.begin(), x.end()
#define F first
#define S second
using namespace std;
const ll N =100+ 5;
const ll NN =2e6 + 5;
const ll INF = -1e1;
const ll MOD = 1e9 + 7;
const ll LG = 18;
const ll k = 316;
vector <int> g[501];
int tin[N],tout[N],a[N],cnt,used[N];
int p[N][16];
void dfs(int v){
    cnt++;
    used[v] = 1;
    tin[v] = cnt;
    for(int to : g[v]){
        if(used[to] == 0){
            p[to][0] = v;
            dfs(to);
        }
    }
    tout[v] = cnt;
}
bool upper(int x,int y){
    if(tin[x] <= tin[y] && tout[x] >= tout[y])return 1;
    else return 0;
}
int lca(int x,int y){
    if(upper(x,y) == 1){
        return x;

    }
    if(upper(y,x) == 1){
        return y;
    }
    for(int j = 6;j >= 0;j--){
        int h = p[x][j];
        if(upper(h,y) == 0){
            x = h;
        }
    }
    return p[x][0];
}
void solve(){
    int n,m,q;
    cin >> n >> m  >> q;
    for(int i = 1;i < n;i++){
        int u,v;
        cin >> u >> v;
        g[u].pb(v);
        g[v].pb(u);
    }
    p[1][0] = 1;
    dfs(1);
    for(int i = 1;i <= 6;i++){
        for(int j = 1;j <= n;j++){
            p[j][i] = p[p[j][i - 1]][i - 1];
        }
    }
    for(int i = 1;i <= m;i++){
        cin >> a[i];
    }
    bool was = 1;
    while(q--){
        int tp,l,r,x;
        cin >> tp >> l >> r;
        if(tp == 1){
            a[l] = r;
        }
        else{
            cin >> x;
            bool ok = 0;
            for(int j = l;j <= r;j++){
                int lc = a[j];
                if(lc == x){
                    cout << j << " " << j << '\n';
                    ok = 1;
                    break;
                }
                int i = j + 1;
                while(i <= r){
                    int lcc= lca(lc,a[i]);
                    if(lcc == x){
                        cout << j << ' ' << i << '\n';
                        ok = 1;
                        break;
                    }
                    lc = lcc;
                    i++;
                }
                if(ok)break;
            }
            if(!ok)cout << "-1 -1\n";
            was = 0;
        }
    }

}
main (){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
//    freopen("input.txt","r",stdin);
//    freopen("output.txt","w",stdout);
    ll abd= 1;
//    cin >> abd;
    for(ll i = 1;i <= abd;i++){
//        cout << "Case " << i << ":\n";
        solve();
    }
}

Compilation message

treearray.cpp: In function 'void solve()':
treearray.cpp:71:10: warning: variable 'was' set but not used [-Wunused-but-set-variable]
   71 |     bool was = 1;
      |          ^~~
treearray.cpp: At global scope:
treearray.cpp:107:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  107 | main (){
      | ^~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB n=5
2 Correct 0 ms 348 KB n=100
3 Correct 0 ms 344 KB n=100
4 Correct 1 ms 348 KB n=100
5 Correct 1 ms 348 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 2 ms 344 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 0 ms 344 KB n=100
10 Correct 1 ms 348 KB n=100
11 Correct 1 ms 348 KB n=100
12 Correct 1 ms 348 KB n=100
13 Correct 1 ms 344 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 0 ms 344 KB n=100
16 Correct 0 ms 348 KB n=100
17 Correct 0 ms 348 KB n=100
18 Correct 1 ms 348 KB n=100
19 Correct 0 ms 348 KB n=100
20 Correct 0 ms 344 KB n=100
21 Correct 0 ms 348 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 344 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100

Subtask #2
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB n=5
2 Correct 0 ms 348 KB n=100
3 Correct 0 ms 344 KB n=100
4 Correct 1 ms 348 KB n=100
5 Correct 1 ms 348 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 2 ms 344 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 0 ms 344 KB n=100
10 Correct 1 ms 348 KB n=100
11 Correct 1 ms 348 KB n=100
12 Correct 1 ms 348 KB n=100
13 Correct 1 ms 344 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 0 ms 344 KB n=100
16 Correct 0 ms 348 KB n=100
17 Correct 0 ms 348 KB n=100
18 Correct 1 ms 348 KB n=100
19 Correct 0 ms 348 KB n=100
20 Correct 0 ms 344 KB n=100
21 Correct 0 ms 348 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 344 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100
28 Runtime error 1 ms 604 KB Execution killed with signal 11
29 Halted 0 ms 0 KB -

Subtask #3
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB n=5
2 Correct 0 ms 348 KB n=100
3 Correct 0 ms 344 KB n=100
4 Correct 1 ms 348 KB n=100
5 Correct 1 ms 348 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 2 ms 344 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 0 ms 344 KB n=100
10 Correct 1 ms 348 KB n=100
11 Correct 1 ms 348 KB n=100
12 Correct 1 ms 348 KB n=100
13 Correct 1 ms 344 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 0 ms 344 KB n=100
16 Correct 0 ms 348 KB n=100
17 Correct 0 ms 348 KB n=100
18 Correct 1 ms 348 KB n=100
19 Correct 0 ms 348 KB n=100
20 Correct 0 ms 344 KB n=100
21 Correct 0 ms 348 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 344 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100
28 Runtime error 1 ms 604 KB Execution killed with signal 11
29 Halted 0 ms 0 KB -

Subtask #4
0 / 44.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB n=5
2 Correct 0 ms 348 KB n=100
3 Correct 0 ms 344 KB n=100
4 Correct 1 ms 348 KB n=100
5 Correct 1 ms 348 KB n=100
6 Correct 1 ms 348 KB n=100
7 Correct 2 ms 344 KB n=100
8 Correct 1 ms 348 KB n=100
9 Correct 0 ms 344 KB n=100
10 Correct 1 ms 348 KB n=100
11 Correct 1 ms 348 KB n=100
12 Correct 1 ms 348 KB n=100
13 Correct 1 ms 344 KB n=100
14 Correct 1 ms 348 KB n=100
15 Correct 0 ms 344 KB n=100
16 Correct 0 ms 348 KB n=100
17 Correct 0 ms 348 KB n=100
18 Correct 1 ms 348 KB n=100
19 Correct 0 ms 348 KB n=100
20 Correct 0 ms 344 KB n=100
21 Correct 0 ms 348 KB n=100
22 Correct 1 ms 348 KB n=100
23 Correct 1 ms 344 KB n=100
24 Correct 1 ms 344 KB n=100
25 Correct 1 ms 348 KB n=100
26 Correct 0 ms 348 KB n=12
27 Correct 1 ms 348 KB n=100
28 Runtime error 1 ms 604 KB Execution killed with signal 11
29 Halted 0 ms 0 KB -