Submission #406740

#	Time	Username	Problem	Language	Result	Execution time	Memory
406740		daniel920712	Wiring (IOI17_wiring)	C++14	20 / 100	1091 ms	103908 KiB

wiring

#include "wiring.h"
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <map>
#include <set>
#include <assert.h>
using namespace std;
long long N,M;


vector < int > x,y;
map < pair < int , int > , int > DP;
set < int > have;
map < int , int > cha;
int who1[100005];
int who2[100005];
int xx=0;
long long F(long long a,long long b)
{
    if(a==N&&b==M) return 0;
    if(a==N||b==M||(N>200||M>200)&&abs(who2[b]-who1[a])>=10) return 1e18;
    if(DP.find(make_pair(a,b))!=DP.end()) return DP[make_pair(a,b)];
    xx++;
    assert(xx<=1000000);
    DP[make_pair(a,b)]=(long long) abs(y[b]-x[a])+min(F(a+1,b+1),min(F(a+1,b),F(a,b+1)));
    return DP[make_pair(a,b)];
}
long long min_total_length(vector< int > r, vector < int > b)
{
    long long ans=0,i,now=0;
    N=r.size();
    M=b.size();
    x=r;
    y=b;
    for(auto i:r) have.insert(i);
    for(auto i:b) have.insert(i);
    for(auto i:have) cha[i]=now++;
    for(i=0;i<N;i++) who1[i]=cha[r[i]];
    for(i=0;i<M;i++) who2[i]=cha[b[i]];
    if(b[0]>r[N-1])
    {
        if(N<=M)
        {
            for(i=0;i<min(N,M);i++) ans+=(long long) b[i]-r[i];
            for(i=N;i<M;i++) ans+=(long long) b[i]-r[N-1];
        }
        else
        {
            for(i=1;i<=M;i++) ans+=(long long) b[M-i]-r[N-i];
            for(i=0;i<N-M;i++) ans+=(long long) b[0]-r[i];
        }

        return ans;
    }
    else return F(0,0);
}

Compilation message (stderr)

wiring.cpp: In function 'long long int F(long long int, long long int)':
wiring.cpp:22:34: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   22 |     if(a==N||b==M||(N>200||M>200)&&abs(who2[b]-who1[a])>=10) return 1e18;
      |                    ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 7 / 7
• Subtask 2: 13 / 13
• Subtask 3: 0 / 10
• Subtask 4: 0 / 25
• Subtask 5: 0 / 45