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Submission #1048167

# Submission time Handle Problem Language Result Execution time Memory
1048167 2024-08-08T03:38:39 Z nmts Palembang Bridges (APIO15_bridge) C++17
100 / 100
 58 ms 9428 KB 
#include <bits/stdc++.h>

#define file(name) freopen(name".inp" , " r " , stdin);freopen(name".out" , " w " , stdout);
#define faster    ios_base :: sync_with_stdio(false) ; cin.tie(0) ; cout.tie(0) ;
#define pii pair < int , int >
#define fi first
#define se second
#define mii map< int , int>
#define reset(a,val) memset(a ,val , sizeof(a) )
#define count_bit(i) __builtin_popcountll(i) 
#define mask(i) ((1LL << (i)))  
#define status(x, i) (((x) >> (i)) & 1)  
#define set_on(x, i) ((x) | mask(i)) 
#define set_off(x, i) ((x) & ~mask(i))
#define endl '\n'    
#define ll long long
#define int ll
const int maxn = 1e6 + 6;
const int mod= 1e9 + 7;
const ll INFLL= 3e18 + 5;
const int INF = 1e9 + 5 ;
const int LOG = 20 ;


template <class T> inline T sqr(T x) { return x * x; };

template <class T> inline int Power(T x, int y) 

{ if (!y) return 1; if (y & 1) return sqr(Power(x, y / 2)) % mod * x % mod; return sqr(Power(x, y / 2)) % mod; }

template<class T> bool minimize(T& a, const T& b) { return b < a ? a = b, 1 : 0; }
template<class T> bool maximize(T& a, const T& b) { return a < b ? a = b, 1 : 0; }

inline int gcd(int x, int y) 
{ return y ? gcd(y , x % y) : x;}

inline int lcm(int x, int y) { return x * y / gcd(x, y); }

using namespace std;

int k , n;

int dist = 0;

vector<pii> path;

// sub1 2

int calc(int x)
{

    int res = 0;

    for (int i = 0 ; i < path.size() ; ++i)
        res += (abs(path[i].fi - x) + abs(path[i].se - x));

    return res;
}

void solve1()
{

    vector<int> a;
    for (int i = 0 ; i < path.size() ; ++i)
        a.push_back(path[i].fi) , a.push_back(path[i].se);
    
    sort(a.begin() ,a.end());

    int k = (a.size() + 1) / 2 - 1;
    cout << dist + min(calc(a[k]) , min(calc(a[k - 1]) , calc(a[k + 1]))) << endl;

    // cout << a[k] << " " << calc(a[k]) << endl;

}


//----------------------------------------------------------------------------------------------


// sub 3 4 5

priority_queue<int , vector<int> , less<int>> low;
priority_queue<int , vector<int> , greater<int>> up;

int sum_low = 0;
int sum_up = 0;
int f[maxn];

void INSERT(int val)
{

    int a = (low.empty() ? INF : low.top());

    if (a < val)
        {
            up.push(val);
            sum_up += val;
        }
    else 
        {
            low.push(val);
            sum_low += val;
        }
    
    if (up.size() + 1 < low.size())
        {

            sum_low -= low.top();
            sum_up += low.top();
            up.push(low.top());
            low.pop();

        }
    
    if (low.size() < up.size())
        {
            sum_up -= up.top();
            sum_low += up.top();
            low.push(up.top());
            up.pop();
        }

}

void solve2()
{

    sort(path.begin() , path.end() , [&](pii a , pii b)
        {
            return a.fi + a.se < b.fi + b.se;
        });
    
    sum_low = 0;
    sum_up = 0;

    for (int i = 0 ; i < path.size() ; ++i)
        {
            INSERT(path[i].fi);
            INSERT(path[i].se);

            f[i] = sum_up - sum_low;

        }

    sum_low = 0;
    sum_up = 0;

    while (up.size()) up.pop();
    while (low.size()) low.pop();

    int ans = f[path.size() - 1];

    for (int i = path.size() - 1 ;  i >= 0 ; --i)
        {
            INSERT(path[i].fi);
            INSERT(path[i].se);
            minimize(ans , sum_up - sum_low + f[i - 1]);
        }

    cout << ans + dist << endl;

}

void solve()
{

    cin >> k >> n ;

    for (int i = 1 ; i <= n; ++i)
        {
            char a , b ; int x , y ; cin >> a >> x >> b >> y;
            if (a == b) dist += abs(x - y);
            else path.push_back({x , y});
        }

    dist += path.size(); 

    if (k == 1) solve1();
    if (k == 2) solve2();

}


int32_t main()
{
    faster;
    // file("txt");
    // int t ; cin >> t ; while (t--)
    solve();
    return 0;
}

Compilation message

bridge.cpp: In function 'long long int calc(long long int)':
bridge.cpp:54:24: 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]
   54 |     for (int i = 0 ; i < path.size() ; ++i)
      |                      ~~^~~~~~~~~~~~~
bridge.cpp: In function 'void solve1()':
bridge.cpp:64:24: 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]
   64 |     for (int i = 0 ; i < path.size() ; ++i)
      |                      ~~^~~~~~~~~~~~~
bridge.cpp: In function 'void solve2()':
bridge.cpp:136:24: 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]
  136 |     for (int i = 0 ; i < path.size() ; ++i)
      |                      ~~^~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 15 ms 4880 KB Output is correct
13 Correct 25 ms 5076 KB Output is correct
14 Correct 19 ms 4820 KB Output is correct
15 Correct 14 ms 2776 KB Output is correct
16 Correct 16 ms 5076 KB Output is correct
17 Correct 18 ms 5072 KB Output is correct
18 Correct 21 ms 5076 KB Output is correct
19 Correct 24 ms 5072 KB Output is correct
20 Correct 16 ms 5076 KB Output is correct
21 Correct 22 ms 5072 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 460 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 1 ms 348 KB Output is correct
14 Correct 1 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 472 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 1 ms 348 KB Output is correct
21 Correct 0 ms 512 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 464 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 464 KB Output is correct
11 Correct 0 ms 468 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 1 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 604 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 1 ms 348 KB Output is correct
22 Correct 1 ms 344 KB Output is correct
23 Correct 0 ms 496 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 22 ms 7760 KB Output is correct
26 Correct 42 ms 8248 KB Output is correct
27 Correct 51 ms 8744 KB Output is correct
28 Correct 58 ms 9420 KB Output is correct
29 Correct 52 ms 8984 KB Output is correct
30 Correct 27 ms 6100 KB Output is correct
31 Correct 24 ms 8224 KB Output is correct
32 Correct 39 ms 9368 KB Output is correct
33 Correct 42 ms 9428 KB Output is correct
34 Correct 47 ms 9412 KB Output is correct
35 Correct 28 ms 8908 KB Output is correct
36 Correct 41 ms 9168 KB Output is correct
37 Correct 27 ms 7768 KB Output is correct