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Submission #971234

# Submission time Handle Problem Language Result Execution time Memory
971234 2024-04-28T08:13:58 Z kebine Palembang Bridges (APIO15_bridge) C++17
100 / 100
 71 ms 9680 KB 
#include <bits/stdc++.h>
using namespace std;

#define ll long long
#define db double
#define pairll pair<ll,ll>
#define lpairll pair<ll,pairll>

#define repp(i,a,b) for (ll i = a; i <= b; i++)
#define repz(i,a,b) for (ll i = a; i < b; i++)
#define repm(i,a,b) for (ll i = a; i >= b; i--)
#define fr first
#define sc second
#define mp make_pair
#define pb push_back

const ll N = 2e5+5, MOD = 1e9+7, M = 1e5+5;
ll tc = 1, n, m, sf[N], pr[N], R, L;
ll x, y, k, otsum, dg, dsum, idx;
string s, s1, s2, ye = "YES", no = "NO";
pairll ar[N];

priority_queue<ll> le;
priority_queue<ll,vector<ll>,greater<ll> > ri;

bool cmp(pairll a, pairll b){
  return(a.fr+a.sc < b.fr+b.sc);
}

void add(ll val){
  if (le.empty() || le.top() >= val) le.push(val), L += val;
  else ri.push(val), R += val;

  ll ls = le.size(), rs = ri.size();
  //move from left to right
  if (ls > rs+1){
    ll tt = le.top();
    le.pop();
    ri.push(tt);
    L -= tt;
    R += tt;
  }
  //move from right to left
  else if (rs > ls){
    ll tt = ri.top();
    ri.pop();
    le.push(tt);
    L += tt;
    R -= tt;
  }
}

void input(){
  cin >> k >> n;
  repp(i,1,n){
    char A, B;
    ll L, R;
    cin >> A >> L >> B >> R;
    if (L > R) swap(L,R);
    if (A == B) otsum += abs(R-L);
    else{
      otsum++;
      idx++;
      ar[idx] = mp(L,R);
    }
  }
}

void solve(){
  sort(ar+1,ar+idx+1,cmp);
  //build prefix
  L = R = 0;
  repp(i,1,idx){
    add(ar[i].fr);
    add(ar[i].sc);
    pr[i] = R-L;
  }

  //build suffix
  while(le.size()) le.pop();
  while(ri.size()) ri.pop();
  L = R = 0;
  repm(i,idx,1){
    add(ar[i].fr);
    add(ar[i].sc);
    sf[i] = R-L;
  }
  ll ans = LLONG_MAX;
  pr[0] = pr[idx+1] = 0;
  if (k == 1) ans = pr[idx];
  else{
    repp(i,1,idx+1){
      ans = min(ans,pr[i-1]+sf[i]);
      //cout << i << " " << pr[i-1] << " " << sf[i] << endl;
    }
  }
  cout << ans+otsum << endl;
}

int main(){
  ios_base::sync_with_stdio(0);
  cin.tie(NULL);
  cout.tie(NULL);
  //cin >> tc;
  while(tc--){
    input();
    solve();
  }
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2532 KB Output is correct
6 Correct 1 ms 2532 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2532 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2484 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2392 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 27 ms 7888 KB Output is correct
13 Correct 71 ms 9680 KB Output is correct
14 Correct 52 ms 7968 KB Output is correct
15 Correct 37 ms 7512 KB Output is correct
16 Correct 26 ms 8784 KB Output is correct
17 Correct 53 ms 9356 KB Output is correct
18 Correct 43 ms 9004 KB Output is correct
19 Correct 63 ms 9516 KB Output is correct
20 Correct 36 ms 9148 KB Output is correct
21 Correct 56 ms 9144 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2516 KB Output is correct
3 Correct 1 ms 2648 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2392 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2452 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2396 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 1 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2392 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2392 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2396 KB Output is correct
15 Correct 1 ms 2396 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2396 KB Output is correct
18 Correct 1 ms 2392 KB Output is correct
19 Correct 1 ms 2396 KB Output is correct
20 Correct 1 ms 2532 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2392 KB Output is correct
23 Correct 1 ms 2396 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2520 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2488 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Correct 0 ms 2396 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2396 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2400 KB Output is correct
15 Correct 1 ms 2392 KB Output is correct
16 Correct 1 ms 2396 KB Output is correct
17 Correct 1 ms 2400 KB Output is correct
18 Correct 1 ms 2396 KB Output is correct
19 Correct 1 ms 2400 KB Output is correct
20 Correct 1 ms 2400 KB Output is correct
21 Correct 1 ms 2396 KB Output is correct
22 Correct 1 ms 2400 KB Output is correct
23 Correct 1 ms 2400 KB Output is correct
24 Correct 1 ms 2396 KB Output is correct
25 Correct 28 ms 7884 KB Output is correct
26 Correct 49 ms 8312 KB Output is correct
27 Correct 63 ms 8832 KB Output is correct
28 Correct 68 ms 9496 KB Output is correct
29 Correct 64 ms 9508 KB Output is correct
30 Correct 34 ms 7000 KB Output is correct
31 Correct 25 ms 8640 KB Output is correct
32 Correct 53 ms 9148 KB Output is correct
33 Correct 36 ms 8784 KB Output is correct
34 Correct 58 ms 8972 KB Output is correct
35 Correct 37 ms 8492 KB Output is correct
36 Correct 56 ms 9004 KB Output is correct
37 Correct 29 ms 7880 KB Output is correct