oj.uz

Submission #242943

# Submission time Handle Problem Language Result Execution time Memory
242943 2020-06-30T01:31:02 Z neihcr7j Palembang Bridges (APIO15_bridge) C++14
100 / 100
 387 ms 15312 KB 
#include<bits/stdc++.h>

#define oo ll(1e15)
#define maxn 100005

using namespace std;
typedef long long ll;

ll n, k;
vector < pair < ll, ll > > L;

ll a[maxn], b[maxn];

void calc(vector < pair < ll, ll > >& L, ll a[]){
  multiset < ll > s, tem;
  s.clear(); tem.clear();

  ll sum = 0, ret = 0;

  a[0] = 0;
  for (ll i = 1; i <= n; ++i) {
    ll x = L[i - 1].first, y = L[i - 1].second;

    sum += x + y;
    s.insert(x); ret += x;
    s.insert(y); ret += y;

    while (s.size() > i) {
      ret -= *s.begin();
      tem.insert(-(*s.begin()));
      s.erase(s.begin());
    }

    while (-(*tem.begin()) > *s.begin()) {
      ret -= *tem.begin() + *s.begin();
      ll tg = -*tem.begin();
      tem.erase(tem.begin());
      tem.insert(-*s.begin());
      s.erase(s.begin());
      s.insert(tg);
    }

    a[i] = 2 * ret - sum;
  }
}

int main(){
  #define TASK "ABC"
 // freopen(TASK".inp", "r", stdin); freopen(TASK".out", "w", stdout);
  ios_base::sync_with_stdio(0);

  ll ret = 0;

  cin >> k >> n;

  for (ll i = 0; i < n; ++i) {
    char ch1, ch2;
    ll x, y;
    cin >> ch1 >> x >> ch2 >> y;

    if (x > y) swap(x, y);

    if (ch1 == ch2) {
      ret += y - x;
      continue;
    }

    L.push_back({x, y});
  }

  n = L.size();

  sort(L.begin(), L.end(), [](pair < ll, ll > i, pair < ll, ll > j){
    return i.first + i.second < j.first + j.second;
  });

  calc(L, a);
  reverse(L.begin(), L.end());
  calc(L, b);

  ll ans = a[n] + ret + n;

  if (k == 1)
    cout << ans;
  else {
    for (ll i = 1; i < n; ++i) {
   //   cerr << i << ' ' << b[4] << '\n';
      ans = min(ans, a[i] + b[n - i] + ret + n);
    }
    cout << ans;
  }

  return 0;
}

Compilation message

bridge.cpp: In function 'void calc(std::vector<std::pair<long long int, long long int> >&, ll*)':
bridge.cpp:28:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     while (s.size() > i) {
            ~~~~~~~~~^~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 6 ms 512 KB Output is correct
4 Correct 6 ms 512 KB Output is correct
5 Correct 6 ms 512 KB Output is correct
6 Correct 5 ms 512 KB Output is correct
7 Correct 6 ms 512 KB Output is correct
8 Correct 6 ms 512 KB Output is correct
9 Correct 6 ms 512 KB Output is correct
10 Correct 6 ms 512 KB Output is correct
11 Correct 6 ms 512 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 4 ms 384 KB Output is correct
3 Correct 5 ms 512 KB Output is correct
4 Correct 6 ms 512 KB Output is correct
5 Correct 6 ms 512 KB Output is correct
6 Correct 6 ms 512 KB Output is correct
7 Correct 6 ms 512 KB Output is correct
8 Correct 6 ms 512 KB Output is correct
9 Correct 6 ms 512 KB Output is correct
10 Correct 5 ms 512 KB Output is correct
11 Correct 6 ms 512 KB Output is correct
12 Correct 132 ms 13672 KB Output is correct
13 Correct 316 ms 15312 KB Output is correct
14 Correct 268 ms 12776 KB Output is correct
15 Correct 146 ms 9072 KB Output is correct
16 Correct 144 ms 14568 KB Output is correct
17 Correct 189 ms 15208 KB Output is correct
18 Correct 126 ms 14864 KB Output is correct
19 Correct 186 ms 15208 KB Output is correct
20 Correct 157 ms 14696 KB Output is correct
21 Correct 219 ms 14952 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 4 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 5 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 512 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 5 ms 512 KB Output is correct
14 Correct 6 ms 512 KB Output is correct
15 Correct 6 ms 512 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 512 KB Output is correct
20 Correct 6 ms 512 KB Output is correct
21 Correct 5 ms 512 KB Output is correct
22 Correct 6 ms 512 KB Output is correct
23 Correct 6 ms 512 KB Output is correct
24 Correct 6 ms 512 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 384 KB Output is correct
2 Correct 5 ms 384 KB Output is correct
3 Correct 4 ms 384 KB Output is correct
4 Correct 5 ms 384 KB Output is correct
5 Correct 5 ms 384 KB Output is correct
6 Correct 5 ms 384 KB Output is correct
7 Correct 5 ms 384 KB Output is correct
8 Correct 5 ms 384 KB Output is correct
9 Correct 5 ms 384 KB Output is correct
10 Correct 5 ms 384 KB Output is correct
11 Correct 5 ms 384 KB Output is correct
12 Correct 5 ms 384 KB Output is correct
13 Correct 6 ms 640 KB Output is correct
14 Correct 6 ms 640 KB Output is correct
15 Correct 6 ms 512 KB Output is correct
16 Correct 5 ms 384 KB Output is correct
17 Correct 5 ms 384 KB Output is correct
18 Correct 5 ms 384 KB Output is correct
19 Correct 5 ms 512 KB Output is correct
20 Correct 6 ms 512 KB Output is correct
21 Correct 6 ms 512 KB Output is correct
22 Correct 6 ms 512 KB Output is correct
23 Correct 6 ms 512 KB Output is correct
24 Correct 6 ms 512 KB Output is correct
25 Correct 139 ms 13672 KB Output is correct
26 Correct 238 ms 13804 KB Output is correct
27 Correct 321 ms 14828 KB Output is correct
28 Correct 387 ms 15212 KB Output is correct
29 Correct 367 ms 15180 KB Output is correct
30 Correct 126 ms 8176 KB Output is correct
31 Correct 141 ms 14564 KB Output is correct
32 Correct 193 ms 15204 KB Output is correct
33 Correct 124 ms 14824 KB Output is correct
34 Correct 196 ms 15208 KB Output is correct
35 Correct 155 ms 14824 KB Output is correct
36 Correct 194 ms 15080 KB Output is correct
37 Correct 136 ms 13672 KB Output is correct