#include <bits/stdc++.h>
//eolibraries
#define lnf 3999999999999999999
#define inf 999999999
#define fi first
#define se second
#define pb push_back
#define all(c) (c).begin(),(c).end()
#define sz(c) (int)(c).size()
#define make_unique(a) sort(all(a)),a.erase(unique(all(a)),a.end());
#define rep(i,n) for(int i=0;i<n;i++)
#define drep(i,n) for(int i=n-1;i>=0;i--)
#define crep(i,x,n) for(int i=x;i<n;i++)
#define vec(...) vector<__VA_ARGS__>
#define _3ioVv0Q ios_base::sync_with_stdio(false),cin.tie(0),cout.tie(0)
//eodefine
using namespace std;
typedef long long ll;
typedef long double ld;
using pii=pair<int,int>;
using vi=vec(int);
const int mxn=12000;
vi adj[mxn];
int main(){
_3ioVv0Q;
ll k;
cin>>k;
assert(k<25);
ll u=abs(k);
vi candies;
for(ll j=0;j<=60;j++){
if(u&(1ll<<j)){
candies.pb(j);
}
}
int nodes=1,root=0;
int magicalnode=0,additional_node=0;
auto push=[&](int u,int v){
adj[u].pb(v);
};
vec(pii) parent_candies;
vec(pii) additional_candies;
auto f=[&](int x){
pii parent={-1,-1};
bool pok=(x%2==0);
while(x>0){
if(parent.fi==-1){
push(root,nodes);
push(root,nodes+1);
}else{
push(parent.fi,nodes);
push(parent.fi,nodes+1);
push(parent.se,nodes);
push(parent.se,nodes+1);
}
parent={nodes,nodes+1};
nodes+=2;
x=x-1;
}
if(pok) additional_candies.pb(parent);
else parent_candies.pb(parent);
};
for(auto x : candies){
if(x==0) continue;
f(x);
}
magicalnode=nodes+1;
additional_node=nodes;
if(candies.front()==0){
push(root,additional_node);
}
for(auto p : additional_candies){
push(p.fi,additional_node);
push(p.se,additional_node);
}
push(additional_node,magicalnode);
for(auto p : parent_candies){
push(p.fi,magicalnode);
push(p.se,magicalnode);
}
cout<<nodes+2<<"\n";
rep(v,nodes+1){
for(auto u : adj[v]){
cout<<v+1<<" "<<u+1<<"\n";
}
}
//
return 0;
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1 ms |
972 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
588 KB |
Wrong answer. |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1 ms |
972 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Runtime error |
1 ms |
972 KB |
Execution killed with signal 6 |
| 2 |
Halted |
0 ms |
0 KB |
- |
