oj.uz

Submission #45846

# Submission time Handle Problem Language Result Execution time Memory
45846 2018-04-16T09:18:44 Z OneSubmissionMan Fireworks (APIO16_fireworks) C++11
26 / 100
 96 ms 30204 KB 
# include <bits/stdc++.h>

# define x first    
# define y second
# define mp make_pair
// everything go according to my plan      
# define pb push_back
# define sz(a) (int)(a.size())
# define vec vector         
// shimkenttin kyzdary, dzyn, dzyn, dzyn...
# define y1    Y_U_NO_y1
# define left  Y_U_NO_left
# define right Y_U_NO_right  

using namespace std;

typedef pair <int, int> pii; 
typedef long long ll;
typedef long double ld;

const int Mod = (int)1e9 + 7;
const int MX = 1073741822;
const ll MXLL = 4e18;
const int Sz = 1110111;
// a pinch of soul
inline void Read_rap () {
  ios_base :: sync_with_stdio(0);
  cin.tie(0); cout.tie(0);
}
inline void randomizer3000 () {
  unsigned int seed;
  asm ("rdtsc" : "=A"(seed));
  srand (seed);
}
void files (string problem) {   
  if (fopen ((problem + ".in").c_str(),"r")) {
    freopen ((problem + ".in").c_str(),"r",stdin);
    freopen ((problem + ".out").c_str(),"w",stdout);
  }
}
void localInput(const char in[] = "s") { 
  if (fopen (in, "r")) {
    freopen (in, "r", stdin);
  }
  else
    cerr << "Warning: Input file not found" << endl;
}        
int n, m;                                                                          

vec<int> g[Sz];
   
const int N = 5e3 + 1;

ll dp[N][N];

ll mn[N];
        
int c[Sz];

ll dist[Sz];
           
vec<ll> W;

void pre_dfs (int v) {
  for (int to : g[v]) { 
    dist[to] = dist[v] + c[to];
    pre_dfs (to);
  }
}                  
void calc (int v) {
  for (int to : g[v])
    calc (to);      
  if (!sz(g[v])) {
    for (int i = 0; i < sz(W); i++) 
      dp[v][i] = MXLL;  
    dp[v][lower_bound (W.begin(), W.end(), dist[v]) - W.begin()] = 0;
  }    
  for (int to : g[v]) { 
    for (int i = 0; i < sz(W); i++) {
      dp[v][i] += dp[to][i];
      dp[v][i] = min (dp[v][i], MXLL);
    }
  }     
  for (int i = 0; i < sz(W); i++) {
    mn[i] = dp[v][i];       
    for (int j = 0; j < i; j++) 
      mn[i] = min (mn[i], W[i] - W[j] + dp[v][j]);

    for (int j = i+1; j < sz(W); j++) { 
      if (W[j] - W[i] > c[v])
        break;       
      mn[i] = min (mn[i], W[j] - W[i] + dp[v][j]);
    }        
  }       
  for (int i = 0; i < sz(W); i++)
    dp[v][i] = mn[i];
}         
int main()
{
  # ifdef Local
    //localInput();
  # endif
  Read_rap();
  cin >> n >> m;
  for (int i = 2; i <= n + m; i++) {   
    static int pr;
    cin >> pr >> c[i];
    g[pr].pb (i);
  }                
  pre_dfs (1);
  for (int i = 1; i <= n + m; i++)
    W.pb (dist[i]);      
  sort (W.begin(), W.end());
  W.resize (unique (W.begin(), W.end()) - W.begin());

  calc (1);
  cout << *min_element (dp[1], dp[1] + sz(W));


  return 0;
}






// Coded by Z..

Compilation message

fireworks.cpp: In function 'void files(std::__cxx11::string)':
fireworks.cpp:37:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen ((problem + ".in").c_str(),"r",stdin);
     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fireworks.cpp:38:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen ((problem + ".out").c_str(),"w",stdout);
     ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
fireworks.cpp: In function 'void localInput(const char*)':
fireworks.cpp:43:13: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
     freopen (in, "r", stdin);
     ~~~~~~~~^~~~~~~~~~~~~~~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 26488 KB Output is correct
2 Correct 23 ms 26488 KB Output is correct
3 Correct 24 ms 26908 KB Output is correct
4 Correct 24 ms 26992 KB Output is correct
5 Correct 24 ms 26992 KB Output is correct
6 Correct 24 ms 27060 KB Output is correct
7 Correct 25 ms 27140 KB Output is correct
8 Correct 25 ms 27140 KB Output is correct
9 Correct 24 ms 27140 KB Output is correct
10 Correct 24 ms 27140 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 29 ms 27140 KB Output is correct
2 Correct 26 ms 27140 KB Output is correct
3 Correct 25 ms 27140 KB Output is correct
4 Correct 24 ms 27140 KB Output is correct
5 Correct 24 ms 27236 KB Output is correct
6 Correct 30 ms 27236 KB Output is correct
7 Correct 23 ms 27292 KB Output is correct
8 Correct 33 ms 27620 KB Output is correct
9 Correct 33 ms 27620 KB Output is correct
10 Correct 25 ms 27628 KB Output is correct
11 Correct 31 ms 28012 KB Output is correct
12 Correct 27 ms 28012 KB Output is correct
13 Correct 26 ms 28028 KB Output is correct
14 Correct 42 ms 28540 KB Output is correct
15 Correct 26 ms 28540 KB Output is correct
16 Correct 26 ms 28540 KB Output is correct
17 Correct 27 ms 28540 KB Output is correct
18 Correct 27 ms 28540 KB Output is correct
19 Correct 27 ms 28540 KB Output is correct

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 26488 KB Output is correct
2 Correct 23 ms 26488 KB Output is correct
3 Correct 24 ms 26908 KB Output is correct
4 Correct 24 ms 26992 KB Output is correct
5 Correct 24 ms 26992 KB Output is correct
6 Correct 24 ms 27060 KB Output is correct
7 Correct 25 ms 27140 KB Output is correct
8 Correct 25 ms 27140 KB Output is correct
9 Correct 24 ms 27140 KB Output is correct
10 Correct 24 ms 27140 KB Output is correct
11 Correct 29 ms 27140 KB Output is correct
12 Correct 26 ms 27140 KB Output is correct
13 Correct 25 ms 27140 KB Output is correct
14 Correct 24 ms 27140 KB Output is correct
15 Correct 24 ms 27236 KB Output is correct
16 Correct 30 ms 27236 KB Output is correct
17 Correct 23 ms 27292 KB Output is correct
18 Correct 33 ms 27620 KB Output is correct
19 Correct 33 ms 27620 KB Output is correct
20 Correct 25 ms 27628 KB Output is correct
21 Correct 31 ms 28012 KB Output is correct
22 Correct 27 ms 28012 KB Output is correct
23 Correct 26 ms 28028 KB Output is correct
24 Correct 42 ms 28540 KB Output is correct
25 Correct 26 ms 28540 KB Output is correct
26 Correct 26 ms 28540 KB Output is correct
27 Correct 27 ms 28540 KB Output is correct
28 Correct 27 ms 28540 KB Output is correct
29 Correct 27 ms 28540 KB Output is correct
30 Incorrect 96 ms 30204 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 24 ms 26488 KB Output is correct
2 Correct 23 ms 26488 KB Output is correct
3 Correct 24 ms 26908 KB Output is correct
4 Correct 24 ms 26992 KB Output is correct
5 Correct 24 ms 26992 KB Output is correct
6 Correct 24 ms 27060 KB Output is correct
7 Correct 25 ms 27140 KB Output is correct
8 Correct 25 ms 27140 KB Output is correct
9 Correct 24 ms 27140 KB Output is correct
10 Correct 24 ms 27140 KB Output is correct
11 Correct 29 ms 27140 KB Output is correct
12 Correct 26 ms 27140 KB Output is correct
13 Correct 25 ms 27140 KB Output is correct
14 Correct 24 ms 27140 KB Output is correct
15 Correct 24 ms 27236 KB Output is correct
16 Correct 30 ms 27236 KB Output is correct
17 Correct 23 ms 27292 KB Output is correct
18 Correct 33 ms 27620 KB Output is correct
19 Correct 33 ms 27620 KB Output is correct
20 Correct 25 ms 27628 KB Output is correct
21 Correct 31 ms 28012 KB Output is correct
22 Correct 27 ms 28012 KB Output is correct
23 Correct 26 ms 28028 KB Output is correct
24 Correct 42 ms 28540 KB Output is correct
25 Correct 26 ms 28540 KB Output is correct
26 Correct 26 ms 28540 KB Output is correct
27 Correct 27 ms 28540 KB Output is correct
28 Correct 27 ms 28540 KB Output is correct
29 Correct 27 ms 28540 KB Output is correct
30 Incorrect 96 ms 30204 KB Output isn't correct
31 Halted 0 ms 0 KB -