Submission #542803

#	Time	Username	Problem	Language	Result	Execution time	Memory
542803		Sho10	Mechanical Doll (IOI18_doll)	C++17	0 / 100	171 ms	262144 KiB

doll

#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho
#include "doll.h"
using ll=int;
using ld=long double;
int const INF=1000000005;
//ll const LINF=1000000000000000005;
int const nmax = 400000;
ll const mod=1000000007;
ld const PI=3.14159265359;
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define endl '\n'
#define CODE_START  ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll lt[nmax+1],rt[nmax+1],b[nmax+1],ans[nmax+1],switches=0,added=0;
vector<int>a;
ll build(ll node,ll realnodes){
if(realnodes==0){
    return -1;
}
if(node==1){
    return (added++);
}
ll centr=-(++switches);
lt[-centr]=build(node/2,realnodes-min(node/2,realnodes));
rt[-centr]=build(node/2,min(node/2,realnodes));
return centr;
}
ll dfs(ll node){
if(node>=0){
    return node;
}
b[-node]=!b[-node];
if(b[-node]==1){
    dfs(lt[-node]);
}else dfs(rt[-node]);
}
void create_circuit(int M,vector<int>A){
vector<int>C(M+1);
for(ll i=0;i<A.size();i++)
{
    a.pb(i);
}
C[0]=-1;
for(int i=1;i<=M;i++)
{
    C[i]=-1;
}
a.pb(0);
ll nodes=1;
while(nodes<a.size()){
    nodes*=2;
}
build(nodes,a.size());
for(ll i=0;i<a.size();i++)
{
ans[dfs(-1)]=a[i];
}
vector<int> X(switches),Y(switches);
for(ll i=1;i<=switches;i++)
{
X[i-1]=lt[i];
Y[i-1]=rt[i];
if(X[i-1]>=0){
    X[i-1]=ans[X[i-1]];
}
if(Y[i-1]>=0){
    Y[i-1]=ans[Y[i-1]];
}
}
answer(C,X,Y);
}

Compilation message (stderr)

doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:44:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 | for(ll i=0;i<A.size();i++)
      |            ~^~~~~~~~~
doll.cpp:55:12: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   55 | while(nodes<a.size()){
      |       ~~~~~^~~~~~~~~
doll.cpp:59:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   59 | for(ll i=0;i<a.size();i++)
      |            ~^~~~~~~~~
doll.cpp: In function 'll dfs(ll)':
doll.cpp:41:1: warning: control reaches end of non-void function [-Wreturn-type]
   41 | }
      | ^

• Subtask 1: 0 / 2
• Subtask 2: 0 / 4
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 18
• Subtask 6: 0 / 56