Submission #838955

#	Time	Username	Problem	Language	Result	Execution time	Memory
838955		drkarlicio2107	Palembang Bridges (APIO15_bridge)	C++14	0 / 100	1 ms	232 KiB

bridge

#include <bits/stdc++.h>
using namespace std;
vector < pair <int, int> > v;
int pos [20010][2];
int main (){
    int n, k; cin >> k >> n; long long int sol=0; int ind=0;
    for (int i=0; i<n; i++){
        long long int a, b; char x, y; cin >> x >> a >> y >> b;
        if (x==y){
            sol+=abs (a-b); continue;
        }
        v.push_back ({a, 0});
        v.push_back ({b, 1}); pos [ind][0]=a; pos [ind][1]=b; ind++;
    }
    long long int ans=1e18;
    for (int i=0; i<v.size(); i++){
        int po=v [i].first; long long int curr=0;
        for (int j=0; j<ind; j++){
            if (!(po<=pos [j][1] && po>=pos [j][0])) curr+=2*min (abs (pos [j][0]-po), abs (pos [j][1]-po));
            curr+=(abs (pos [j][0]-pos [j][1])+1);
        }
        ans=min (ans, curr);

        po=v [i].first-1; curr=0;
        for (int j=0; j<ind; j++){
            if (!(po<=pos [j][1] && po>=pos [j][0])) curr+=2*min (abs (pos [j][0]-po), abs (pos [j][1]-po));
            curr+=(abs (pos [j][0]-pos [j][1])+1);
        }
        ans=min (ans, curr);

        po=v [i].first+1; curr=0;
        for (int j=0; j<ind; j++){
            if (!(po<=pos [j][1] && po>=pos [j][0])) curr+=2*min (abs (pos [j][0]-po), abs (pos [j][1]-po));
            curr+=(abs (pos [j][0]-pos [j][1])+1);
        }
        ans=min (ans, curr);
        //cout << ans << endl;
    }
    cout << sol+ans << endl;
    return 0;
}

Compilation message (stderr)

bridge.cpp: In function 'int main()':
bridge.cpp:16:20: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for (int i=0; i<v.size(); i++){
      |                   ~^~~~~~~~~

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