Submission #739153

#	Time	Username	Problem	Language	Result	Execution time	Memory
739153		Mauve	Palembang Bridges (APIO15_bridge)	C++14	22 / 100	42 ms	2512 KiB

bridge

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define pb push_back
#define INF 1e18
ll m,n,l,r,T,i,j,ii,jj,k,D[200005],ans;
vector<ll> pos;
int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
    cin>>T>>n;
    ans=INF;
    for(i=0;i<n;i++){
        char a,b;
        cin>>a>>l>>b>>r;
        if(a==b) k+=abs(l-r);
        else{
            pos.pb(l);
            pos.pb(r);
            k++;
        }
    }
    sort(pos.begin(),pos.end());
    n=pos.size();
    if(T==1){
        for(ll it : pos) k+=abs(pos[n/2]-it);
        cout<<k;
    }
    else{
        for(i=0;i<n;i++) D[0]+=abs(pos[0]-pos[i]);
        for(i=1;i<n;i++) D[i]=D[i-1]+(pos[i]-pos[i-1])*i-(pos[i]-pos[i-1])*(n-i);
        for(i=0;i<n;i++)
        for(j=i+1;j<n;j++) ans=min(ans,D[i]+D[j]+k);
        cout<<ans;
    }
}

• Subtask 1: 8 / 8
• Subtask 2: 14 / 14
• Subtask 3: 0 / 9
• Subtask 4: 0 / 32
• Subtask 5: 0 / 37