Submission #542815

#	Time	Username	Problem	Language	Result	Execution time	Memory
542815		Sho10	Mechanical Doll (IOI18_doll)	C++17	0 / 100	157 ms	262144 KiB

doll

#include <iostream>
#include <vector>
#include "doll.h"
#define MIN(a, b) (((a) < (b)) ? (a) : (b))
using ll=int;
int const nmax = 400000;
using namespace std;
ll leftp[nmax+1];
int rightp[nmax+1];
int cng[nmax+1];
int switches=0,added=0;
ll creategraph(ll nodes,ll realnodes){
if(realnodes==0){
    return -1;
}
if(nodes==1){
    return (added++);
}
ll centr=-(++switches);
leftp[-centr]=creategraph(nodes/2,realnodes-MIN(nodes/2,realnodes));
rightp[-centr]=creategraph(nodes/2,MIN(nodes/2,realnodes));
return centr;
}
std::vector<int>dest;
int real[nmax+1];
ll dfs(ll node){
if(node>=0){
    return node;
}else {
cng[-node]=(!cng[-node]);
if(cng[-node]==1){
    dfs(leftp[-node]);
}else dfs(rightp[-node]);
}
}
void create_circuit(int M,vector<int>A){
vector<int>C(M+1);
C[0]=-1;
for(int i=1;i<=M;i++)
{
    C[i]=-1;
}
for(ll i=0;i<A.size();i++)
{
    dest.push_back(A[i]);
}
dest.push_back(0);
int nodes=1;
while(nodes<dest.size()){
    nodes*=2;
}
creategraph(nodes,dest.size());
for(int i=0;i<dest.size();i++)
{
    real[dfs(-1)]=dest[i];
}
vector<int>X(switches),Y(switches);
for(ll k=1;k<=switches;k++)
{
    X[k-1]=leftp[k];
    Y[k-1]=rightp[k];
    if(X[k-1]>=0){
        X[k-1]=real[X[k-1]];
    }
    if(Y[k-1]>=0){
            Y[k-1]=real[Y[k-1]];
}
}
answer(C,X,Y);
}

Compilation message (stderr)

doll.cpp: In function 'void create_circuit(int, std::vector<int>)':
doll.cpp:43:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   43 | for(ll i=0;i<A.size();i++)
      |            ~^~~~~~~~~
doll.cpp:49:12: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   49 | while(nodes<dest.size()){
      |       ~~~~~^~~~~~~~~~~~
doll.cpp:53:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 | for(int i=0;i<dest.size();i++)
      |             ~^~~~~~~~~~~~
doll.cpp: In function 'll dfs(ll)':
doll.cpp:35:1: warning: control reaches end of non-void function [-Wreturn-type]
   35 | }
      | ^

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