Submission #1100097

#	Time	Username	Problem	Language	Result	Execution time	Memory
1100097		Omar_Elgedawy	Palembang Bridges (APIO15_bridge)	C++17	0 / 100	1 ms	608 KiB

bridge

#include <bits/stdc++.h>

using namespace std;
#define int long long
#define ld long double
#define F first
#define S second
#define el '\n'
#define cout(x) for(auto v:x)cout<<v<<' ';cout<<el
#define coutp(x) for(auto v:x)cout<<v.F<<' '<<v.S<<el
#define cin(x) for(auto &v:x)cin>>v;
#define pb(x) push_back(x)
#define all(x)  x.begin(),x.end()

const int N = 2e6 + 5, M = 1e2 + 5, Mod = 1e9 + 7;
int dx[8] = {1, -1, 0, 0, 1, -1, 1, -1};
int dy[8] = {0, 0, 1, -1, 1, -1, -1, 1};

void solve(int T)
{
    int k, n;
    cin >> k >> n;
    vector<pair<int,int>> v;
    int sum = 0;
    for (int i = 0; i < n; i++)
    {
        char zn1, zn2;
        int loc1, loc2;
        cin >> zn1 >> loc1 >> zn2 >> loc2;
        if (zn1 == zn2)
            sum += abs(loc1 - loc2);
        else
        {
            if (zn1 == 'B')
                swap(loc1, loc2);
            v.emplace_back(loc1, loc2);
        }
    }
    sort(all(v));
    // coutp(v);
    int mn = 1e18;
    for (int i = 0; i < v.size(); i++)
    {
        int cur = 0,cur2=0;
        int loc = v[i].F;
        for (int j = 0; j < v.size(); j++)
        {
            cur += abs(v[j].F - v[j].S);
            if (min(v[j].F, v[j].S) <= loc && loc <= max(v[j].F, v[j].S))cur += 1;
            else cur+=1+2*min(abs(v[j].F-loc),abs(v[j].S-loc));
        }
        loc = v[i].S;
        for (int j = 0; j < v.size(); j++)
        {
            cur2 += abs(v[j].F - v[j].S);
            if (min(v[j].F, v[j].S) <= loc && loc <= max(v[j].F, v[j].S))cur2 += 1;
            else cur2+=1+2*min(abs(v[j].F-loc),abs(v[j].S-loc));
        }
        mn=min({mn,cur,cur2});
        // cout<<cur<<' '<<cur2<<el;
    }
    cout<<mn+sum<<el;
}

int32_t main()
{
// #ifndef ONLINE_JUDGE
    // freopen("input.txt", "r", stdin);
    // freopen("output.txt", "w", stdout);
// #endif
    // freopen(".in", "r", stdin);
    // freopen(".out", "w", stdout);
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int tc = 1;
    // cin >> tc;
    for (int i = 1; i <= tc; i++)solve(i);
    return 0;
}

Compilation message (stderr)

bridge.cpp: In function 'void solve(long long int)':
bridge.cpp:42:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |     for (int i = 0; i < v.size(); i++)
      |                     ~~^~~~~~~~~~
bridge.cpp:46:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         for (int j = 0; j < v.size(); j++)
      |                         ~~^~~~~~~~~~
bridge.cpp:53:27: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |         for (int j = 0; j < v.size(); j++)
      |                         ~~^~~~~~~~~~

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