제출 #404616

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
404616		sad	Palembang Bridges (APIO15_bridge)	C++14	0 / 100	1 ms	204 KiB

bridge

#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define pb push_back
using namespace std;
int k,n;ll re=0;
map<ll,int>st,en;
ll no=0,fin=0;
int main()
{
    cin>>k>>n;ll w=0;
    for(int i=0;i<n;i++)
    {
        char a,b;
        int x,y;
        cin>>a>>x>>b>>y;
        re+=abs(x-y);
        if(a==b)continue;
        re++;
        if(x>y)swap(x,y);
        st[x]++;
        st[y];no++;
        en[y]++;w+=x;
    }
    ll mn=1e17;
    ll last=0;
    for(auto it:st)
    {
        w+=fin*(it.fi-last);
        w-=no*(it.fi-last);
        fin+=en[it.fi];
        no-=st[it.fi];
        mn=min(mn,w);last=it.fi;
       // cout<<it.fi<<" "<<w<<endl;
    }
    re+=mn*2;
    cout<<re;
}

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