#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace std;
using namespace __gnu_pbds;
typedef long long ll;
template <class T> using ordered_set = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
mt19937/*_64*/ rng(chrono::steady_clock::now().time_since_epoch().count());
#define printArr(arr, n) cerr << #arr << " = ["; for(int i=0; i<(n); i++){if (i) cerr << ", "; cerr << arr[i];} cerr << "]\n"
template<class A> ostream& operator<<(ostream &cout, vector<A> const &v) {cout << "["; for(int i = 0; i < v.size(); i++) {if (i) cout << ", "; cout << v[i];} return cout << "]";};
template<class A, class B> ostream& operator<<(ostream &cout, const pair<A,B> &x) {return cout << "(" <<x.first << ", " << x.second << ")";};
void _print() {cerr << "]\n";}
template <class T, class... V> void _print(T t, V... v) {cerr << t; if (sizeof...(v)) cerr << ", "; _print(v...);}
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)
#define fi first
#define se second
#define SZ(x) (int)((x).size())
#define pii pair<int,int>
const int mx = 1e6+50;
ll a[mx], b[mx], depth[mx];
vector<pii> stuff;
void dfs(int v)
{
if (a[v] <= 0) {
stuff.emplace_back(-a[v],depth[v]+1);
} else {
depth[a[v]] = depth[v]+1;
dfs(a[v]);
}
if (b[v] <= 0) {
stuff.emplace_back(-b[v],depth[v]+1);
} else {
depth[b[v]] = depth[v]+1;
dfs(b[v]);
}
}
const ll inf = (1LL<<33);
int main()
{
ios::sync_with_stdio(0);
cin.tie(0);
int n;
cin >> n;
for (int q = 1; q <= n; q++) cin >> a[q] >> b[q];
dfs(1);
vector<pair<ll,ll>> things;
for (pii e : stuff) {
if (e.fi == 0) {
things.emplace_back(-1,0);
continue;
}
int msb = 31 - __builtin_clz(e.fi);
ll x = e.fi;
if (msb+e.se >= 33) {
while (x < inf) x *= 2;
} else {
int msb1 = e.se;
while (msb1 > 0) {
msb1--;
x *= 2;
}
}
things.emplace_back(msb+e.se,x);
}
sort(things.begin(), things.end());
ll x,y;
tie(x,y) = things.back();
if (x == -1) {
cout << "0\n";
return 0;
}
if (x < 33) {
for (int q = x; q >= 0; q--) {
cout << (((1LL<<q)&y) > 0 ? 1 : 0);
}
cout << "\n";
} else {
for (int q = 33; q >= 0; q--) {
cout << ((((1LL<<q)&y) > 0) ? 1 : 0);
x--;
}
while (x >= 0) {
cout << 0;
x--;
}
cout << "\n";
}
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
1 ms |
364 KB |
Output is correct |
| 2 |
Correct |
1 ms |
364 KB |
Output is correct |
| 3 |
Correct |
1 ms |
364 KB |
Output is correct |
| 4 |
Correct |
1 ms |
364 KB |
Output is correct |
| 5 |
Correct |
1 ms |
364 KB |
Output is correct |
| 6 |
Correct |
1 ms |
364 KB |
Output is correct |
| 7 |
Correct |
1 ms |
364 KB |
Output is correct |
| 8 |
Correct |
1 ms |
364 KB |
Output is correct |
| 9 |
Correct |
1 ms |
364 KB |
Output is correct |
| 10 |
Correct |
1 ms |
364 KB |
Output is correct |
| 11 |
Correct |
4 ms |
1388 KB |
Output is correct |
| 12 |
Correct |
5 ms |
1408 KB |
Output is correct |
| 13 |
Correct |
21 ms |
4592 KB |
Output is correct |
| 14 |
Correct |
41 ms |
8940 KB |
Output is correct |
| 15 |
Correct |
40 ms |
5740 KB |
Output is correct |
| 16 |
Correct |
145 ms |
27108 KB |
Output is correct |
| 17 |
Correct |
365 ms |
57832 KB |
Output is correct |
| 18 |
Correct |
374 ms |
60756 KB |
Output is correct |
| 19 |
Correct |
454 ms |
59480 KB |
Output is correct |
| 20 |
Correct |
406 ms |
111192 KB |
Output is correct |
