Submission #737013

#	Time	Username	Problem	Language	Result	Execution time	Memory
737013		ibm2006	Speedrun (RMI21_speedrun)	C++14	100 / 100	218 ms	856 KiB

speedrun

#include<bits/stdc++.h>
#include "speedrun.h"
using namespace std;
typedef int ll;
ll c[1100],d[1100],z,h[1100];
vector<ll> v[1100];
void f(ll x,ll y)
{
    ll i;
    c[x]=y;
    d[z]=x;
    z=x;
    for(i=0;i<h[x];i++)
    {
        if(v[x][i]==y)
            continue;
        f(v[x][i],x);
    }
}
void assignHints(ll subtask,ll N,ll A[],ll B[])
{

    ll i,n,x,j;
    n=N;
    for(i=1;i<=n;i++)
        {v[i].clear();   h[i]=0; }
    for(i=1;i<n;i++)
    {
        v[A[i]].push_back(B[i]);
    v[B[i]].push_back(A[i]);
    h[A[i]]++;
    h[B[i]]++;
    }
    f(1,0);
    setHintLen(20);
    for(i=1;i<=n;i++)
    {
        x=c[i];
        for(j=1;j<=10;j++)
        {
            setHint(i,j,x%2);
            x/=2;
        }
        x=d[i];
        for(j=11;j<=20;j++)
        {
            setHint(i,j,x%2);
            x/=2;
        }
    }
}
ll a[1100],b[1100];
ll g(ll x,ll y)
{
    //printf("%d\n",x);
    ll i,j,r,z,w;

        if(c[x]==0)
        {
            c[x]=1;
            w=0;
            r=1;
            for(i=1;i<=10;i++)
            {
                w=getHint(i);
                if(z==1)
                    w+=r;
                r*=2;
            }
            b[x]=w;
            w=0;
            r=1;
            for(i=1;i<=10;i++)
            {
                z=getHint(i+10);
                if(z==1)
                    w+=r;
                r*=2;
            }
            a[x]=w;
        }
        ll k=a[x];
    while(1)
    {
        if(k==0)
            return 0;
        if(goTo(k))
        {
            k=g(k,x);
        }
        else
        {
            goTo(y);
            return k;
        }
    }
}
void speedrun(ll subtask,ll N,ll start)
{
    ll i,x,y,r=1,z,n;
    bool t;
    x=start;
    n=N;
    for(i=1;i<=n;i++)
        c[i]=0;
    while(x!=1)
    {
        if(c[x]==0)
        {
            c[x]=1;
            y=0;
            r=1;
            for(i=1;i<=10;i++)
            {
                z=getHint(i);
                //printf("%d",z);
                if(z==1)
                    y+=r;
                r*=2;
            }
            b[x]=y;
            y=0;
            r=1;
            //printf(" ");
            for(i=1;i<=10;i++)
            {
                z=getHint(i+10);
                //printf("%d",z);
                if(z==1)
                    y+=r;
                r*=2;
            }
            a[x]=y;
        }
        x=b[x];
        //printf(" %d\n",x);
        t=goTo(x);
    }
    g(x,0);
}

Compilation message (stderr)

speedrun.cpp: In function 'll g(ll, ll)':
speedrun.cpp:56:10: warning: unused variable 'j' [-Wunused-variable]
   56 |     ll i,j,r,z,w;
      |          ^
speedrun.cpp: In function 'void speedrun(ll, ll, ll)':
speedrun.cpp:101:10: warning: variable 't' set but not used [-Wunused-but-set-variable]
  101 |     bool t;
      |          ^
speedrun.cpp: In function 'll g(ll, ll)':
speedrun.cpp:66:17: warning: 'z' may be used uninitialized in this function [-Wmaybe-uninitialized]
   66 |                 if(z==1)
      |                 ^~

• Subtask 1: 21 / 21
• Subtask 2: 8 / 8
• Subtask 3: 19 / 19
• Subtask 4: 12 / 12
• Subtask 5: 40 / 40