oj.uz

Submission #1086465

# Submission time Handle Problem Language Result Execution time Memory
1086465 2024-09-10T17:36:22 Z vjudge1 Magic Tree (CEOI19_magictree) C++14
16 / 100
 111 ms 39860 KB 
#include<bits/stdc++.h>
using namespace std;

#define NAME ""
#define ll long long
#define pii pair < int , int >
#define fi first
#define se second
#define FOR(i, a, b) for (int i = (a), _b = (b); i <= _b; i ++)
#define FORD(i, a, b) for (int i = (a), _b = (b); i >= _b; i --)
#define REP(i, n) for (int i = 0, _n = (n); i < _n; i ++)
#define bit(x, i) (((x) >> (i)) & 1ll)
#define mask(x) (1ll << (x))
#define mem(f, x) memset(f, x, sizeof(f))
#define sz(x) (int32_t) (x.size())

const int nmax = 1e5;
int p[nmax + 5], t[nmax + 5], w[nmax + 5];
map < int, ll > s[nmax + 5];

signed main() {
  if (fopen(NAME".inp", "r")) {
    freopen(NAME".inp", "r", stdin);
    freopen(NAME".out", "w", stdout);
  }
  cin.tie(0)->sync_with_stdio(0);

  int n, m, k;
  cin >> n >> m >> k;

  FOR(i, 2, n) {
    cin >> p[i];
  }

  for (; m --;) {
    int v;
    cin >> v;
    cin >> t[v] >> w[v];
  }

  FORD(i, n, 2) {
    if (w[i]) {
      map < int, ll > :: iterator it = s[i].insert({t[i], w[i]}).fi;
      it = next(it);
      int remain = w[i];

      while (remain && it != s[i].end()) {

        if ((*it).se >= remain) {
          (*it).se -= remain;
          break;
        }

        remain -= (*it).se;
        s[i].erase(it ++);
      }
    }

    if (sz(s[i]) > sz(s[p[i]])) {
      swap(s[i], s[p[i]]);
    }

    for (auto x: s[i]) {
      s[p[i]][x.fi] += x.se;
    }
  }

  ll ans = 0;
  for (auto x: s[1]) {
    ans += x.se;
  }

  cout << ans;

  return 0;
}

Compilation message

magictree.cpp: In function 'int main()':
magictree.cpp:23:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |     freopen(NAME".inp", "r", stdin);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
magictree.cpp:24:12: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   24 |     freopen(NAME".out", "w", stdout);
      |     ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
0 / 6.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 4952 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 36 ms 16812 KB Output is correct
2 Correct 23 ms 9808 KB Output is correct
3 Correct 111 ms 39860 KB Output is correct
4 Correct 74 ms 17748 KB Output is correct
5 Correct 71 ms 22864 KB Output is correct

Subtask #3
0 / 11.0

# Verdict Execution time Memory Grader output
1 Incorrect 4 ms 4952 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 31 ms 12112 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 16.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 4952 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 5724 KB Output is correct
2 Correct 9 ms 7088 KB Output is correct
3 Correct 8 ms 7000 KB Output is correct
4 Correct 9 ms 7108 KB Output is correct
5 Correct 6 ms 6488 KB Output is correct
6 Correct 9 ms 7004 KB Output is correct
7 Correct 10 ms 6748 KB Output is correct

Subtask #7
0 / 22.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 4952 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #8
0 / 17.0

# Verdict Execution time Memory Grader output
1 Incorrect 2 ms 4952 KB Output isn't correct
2 Halted 0 ms 0 KB -