oj.uz

Submission #725317

# Submission time Handle Problem Language Result Execution time Memory
725317 2023-04-17T08:42:38 Z quiet_space Palembang Bridges (APIO15_bridge) C++14
100 / 100
 88 ms 5968 KB 
#include <bits/stdc++.h>
#define FOR(i,j,k) for(int i=j; i<=k; ++i)
#define ROF(i,j,k) for(int i=j; i>=k; --i)
inline int read (void) {
  int x = 0, f = 1, ch = getchar();
  while(!isdigit(ch)) { if(ch == '-') f = -f; ch = getchar(); }
  while(isdigit(ch)) { x = x * 10 + ch - '0'; ch = getchar(); }
  return x * f;
}
using ll = long long;
using pii = std::pair <int, int>;
const int maxn = 100005;
inline bool cmp (pii p, pii q) {
  return p.first + p.second < q.first + q.second;
}
char chp[5], chq[5];
pii p[maxn];
int a[maxn<<1];
ll pre[maxn], suf[maxn];
struct Node1 {
  ll tot; std::priority_queue <int> q;
  inline int top (void) { return q.top(); }
  inline void push (int v) { tot += v; q.push(v); }
  inline void pop (void) { tot -= q.top(); q.pop(); }
  inline void clear (void) { tot = 0; while(!q.empty()) q.pop(); }
} q1;
struct Node2 {
  ll tot; std::priority_queue <int, std::vector <int>, std::greater <int> > q;
  inline int top (void) { return q.top(); }
  inline void push (int v) { tot += v; q.push(v); }
  inline void pop (void) { tot -= q.top(); q.pop(); }
  inline void clear (void) { tot = 0; while(!q.empty()) q.pop(); }
} q2;
int main (void) {
  int k = read(), N = read(), n = 0;
  ll ans = 0;
  FOR(i,1,N) {
    scanf("%s", chp+1);
    int s = read();
    scanf("%s", chq+1);
    int t = read();
    if(s > t) std::swap (s, t);
    if(chp[1] == chq[1])
      ans += t - s;
    else {
      ++ ans;
      p[++ n] = {s, t};
    }
  }
  if(k == 1) {
    FOR(i,1,n) a[i*2-1] = p[i].first, a[i*2] = p[i].second;
    std::sort(a+1, a+n*2+1);
    FOR(i,1,n) ans -= a[i];
    FOR(i,n+1,n*2) ans += a[i];
  } else {
    std::sort(p+1, p+n+1, cmp);
    ll mn = 1ll << 60;
    FOR(i,1,n) {
      q1.push(p[i].first);
      q2.push(p[i].second);
      while(q1.top() > q2.top()) {
        q2.push(q1.top()); q1.pop();
        q1.push(q2.top()); q2.pop();
      }
      pre[i] = q2.tot - q1.tot;
    }
    q1.clear (); q2.clear ();
    ROF(i,n,1) {
      q1.push(p[i].first);
      q2.push(p[i].second);
      while(q1.top() > q2.top()) {
        q2.push(q1.top()); q1.pop();
        q1.push(q2.top()); q2.pop();
      }
      suf[i] = q2.tot - q1.tot;
    }
    FOR(i,0,n) mn = std::min(mn, pre[i] + suf[i+1]);
    ans += mn;
  }
  printf("%lld\n", ans);
  return 0;
}

Compilation message

bridge.cpp: In function 'int main()':
bridge.cpp:38:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   38 |     scanf("%s", chp+1);
      |     ~~~~~^~~~~~~~~~~~~
bridge.cpp:40:10: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   40 |     scanf("%s", chq+1);
      |     ~~~~~^~~~~~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 312 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 1 ms 340 KB Output is correct
6 Correct 1 ms 336 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct

Subtask #2
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 2 ms 308 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 340 KB Output is correct
5 Correct 2 ms 320 KB Output is correct
6 Correct 2 ms 320 KB Output is correct
7 Correct 1 ms 324 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 16 ms 2560 KB Output is correct
13 Correct 35 ms 4164 KB Output is correct
14 Correct 30 ms 2892 KB Output is correct
15 Correct 20 ms 2604 KB Output is correct
16 Correct 21 ms 3404 KB Output is correct
17 Correct 23 ms 4176 KB Output is correct
18 Correct 29 ms 3784 KB Output is correct
19 Correct 35 ms 4248 KB Output is correct
20 Correct 23 ms 3644 KB Output is correct
21 Correct 31 ms 3872 KB Output is correct

Subtask #3
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 308 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 2 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 324 KB Output is correct
20 Correct 1 ms 324 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct

Subtask #5
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 448 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 312 KB Output is correct
8 Correct 1 ms 312 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 308 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 436 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 328 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 324 KB Output is correct
23 Correct 1 ms 340 KB Output is correct
24 Correct 2 ms 328 KB Output is correct
25 Correct 31 ms 4416 KB Output is correct
26 Correct 69 ms 4520 KB Output is correct
27 Correct 84 ms 5192 KB Output is correct
28 Correct 78 ms 5824 KB Output is correct
29 Correct 85 ms 5768 KB Output is correct
30 Correct 42 ms 3316 KB Output is correct
31 Correct 31 ms 5232 KB Output is correct
32 Correct 73 ms 5968 KB Output is correct
33 Correct 40 ms 5652 KB Output is correct
34 Correct 79 ms 5932 KB Output is correct
35 Correct 58 ms 5428 KB Output is correct
36 Correct 88 ms 5676 KB Output is correct
37 Correct 23 ms 4412 KB Output is correct