#include<bits/stdc++.h>
using namespace std;
void DBG() { cerr << "]\n"; }
template<class H, class... T> void DBG(H h, T... t) {
cerr << h; if(sizeof...(t)) cerr << ", ";
DBG(t...);
}
#ifdef LOCAL
#define dbg(...) cerr << "[" << #__VA_ARGS__ << "]: [", DBG(__VA_ARGS__)
#else
#define dbg(...) 0
#endif // LOCAL
#define FOR(i,a,b) for(int i = (a) ; i<(b) ; i++)
#define F0R(i,a) FOR(i,0,a)
#define ROF(i,a,b) for(int i = (b)-1 ; i>=(a) ; i--)
#define R0F(i,a) ROF(i,0,a)
#define each(e,a) for(auto &e : (a))
#define sz(v) (int)(v).size()
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define pb push_back
#define tcT template<class T
#define nl "\n"
using ll = long long;
using vi = vector<int>;
using pi = pair<int,int>;
using str = string;
tcT> using V = vector<T>;
tcT> using pqg = priority_queue<T,vector<T>,greater<T>>;
void setIO(string NAME = "") {
cin.tie(0)->sync_with_stdio(0);
if(sz(NAME)) {
freopen((NAME + ".inp").c_str(),"r",stdin);
freopen((NAME + ".out").c_str(),"w",stdout);
}
}
tcT> bool ckmax(T&a, const T&b) {
return b > a ? a = b,1 : 0;
}
const int MX = 2e6+10;
int best[MX], N, w[MX], ind;
vi adj[MX];
void dfs(int u, int dep) {
if(u>=N) {
ckmax(best[dep], w[u]);
return;
}
dfs(adj[u][0], dep+1);
dfs(adj[u][1], dep+1);
}
void solve() {
memset(best,-1, sizeof best);
cin>>N;
ind = N;
F0R(i,N) {
int a, b;
cin>>a>>b;
if(a>0) {
adj[i].pb(a-1);
}
else {
w[ind] = -a;
adj[i].pb(ind++);
}
if(b>0) {
adj[i].pb(b-1);
}
else {
w[ind] = -b;
adj[i].pb(ind++);
}
}
dfs(0,0);
int res, res_dep; res = res_dep = -1;
F0R(i,MX) if(~best[i]) {
bool ok = false;
if(res == -1) {
ok = true;
}
else {
int tmp = (res + best[i] -1)/best[i];
int pw2 = 1;
F0R(_,i-res_dep) {
pw2 = pw2*2;
if(tmp <= pw2) {
ok = true;
break;
}
}
}
if(ok) {
res = best[i];
res_dep = i;
}
}
vi ans;
F0R(_,res_dep) ans.pb(0);
while(res>0) ans.pb(res&1), res>>=1;
reverse(all(ans));
each(e,ans) cout << e;
cout << nl;
}
int main() {
setIO();
int t=1;
//cin>>t;
while(t-->0) {
solve();
}
return 0;
}
Compilation message
poklon.cpp: In function 'void setIO(std::string)':
poklon.cpp:37:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
37 | freopen((NAME + ".inp").c_str(),"r",stdin);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
poklon.cpp:38:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
38 | freopen((NAME + ".out").c_str(),"w",stdout);
| ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| # |
결과 |
실행 시간 |
메모리 |
Grader output |
| 1 |
Correct |
35 ms |
55020 KB |
Output is correct |
| 2 |
Correct |
33 ms |
55224 KB |
Output is correct |
| 3 |
Correct |
34 ms |
55108 KB |
Output is correct |
| 4 |
Correct |
38 ms |
55048 KB |
Output is correct |
| 5 |
Correct |
41 ms |
55128 KB |
Output is correct |
| 6 |
Correct |
43 ms |
54988 KB |
Output is correct |
| 7 |
Correct |
41 ms |
55000 KB |
Output is correct |
| 8 |
Correct |
40 ms |
55100 KB |
Output is correct |
| 9 |
Correct |
34 ms |
55112 KB |
Output is correct |
| 10 |
Correct |
36 ms |
55172 KB |
Output is correct |
| 11 |
Correct |
44 ms |
55752 KB |
Output is correct |
| 12 |
Correct |
46 ms |
55752 KB |
Output is correct |
| 13 |
Correct |
68 ms |
58336 KB |
Output is correct |
| 14 |
Correct |
91 ms |
61544 KB |
Output is correct |
| 15 |
Correct |
78 ms |
60176 KB |
Output is correct |
| 16 |
Correct |
171 ms |
75824 KB |
Output is correct |
| 17 |
Correct |
427 ms |
102764 KB |
Output is correct |
| 18 |
Correct |
388 ms |
104880 KB |
Output is correct |
| 19 |
Correct |
471 ms |
111888 KB |
Output is correct |
| 20 |
Correct |
710 ms |
143992 KB |
Output is correct |
