Submission #112162

#	Time	Username	Problem	Language	Result	Execution time	Memory
112162		Runtime_error_	Palembang Bridges (APIO15_bridge)	C++14	22 / 100	114 ms	4384 KiB

bridge

#include <bits/stdc++.h>
#define ll long long
using namespace std;
ll k,n,ans,cnt,sum2;
vector<ll> v;

int main(){

    cin>>k>>n;
    for(ll i=1;i<=n;i++){
        char x,y;
        ll a,b;
        cin>>x>>a>>y>>b;
        if(x==y)
            ans+=abs(a-b);
        else
            v.push_back(a),v.push_back(b),cnt+=2,sum2+=a+b;
    }
    ans+=cnt/2;
    if(cnt){
        ll temp=1e18+9;
        sort(v.begin(),v.end());
        ll sum1=0,sz=v.size();
        for(ll i=0;i<v.size();i++)
            sum1+=v[i],sum2-=v[i],temp=min(temp,(ll)(i+1ll)*v[i]-sum1 + sum2-(sz-i-1ll)*v[i] );
        ans+=temp;
    }
    cout<<ans<<endl;
}

Compilation message (stderr)

bridge.cpp: In function 'int main()':
bridge.cpp:25:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         for(ll i=0;i<v.size();i++)
                    ~^~~~~~~~~

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