oj.uz

Submission #316287

# Submission time Handle Problem Language Result Execution time Memory
316287 2020-10-25T19:09:54 Z VROOM_VARUN Wombats (IOI13_wombats) C++14
37 / 100
 8467 ms 33144 KB 
/*
ID: varunra2
LANG: C++
TASK: wombat
*/

#include <bits/stdc++.h>
#include "wombats.h"
using namespace std;

#ifdef DEBUG
#include "lib/debug.h"
#define debug(...) cerr << "[" << #__VA_ARGS__ << "]:", debug_out(__VA_ARGS__)
#define debug_arr(...) \
  cerr << "[" << #__VA_ARGS__ << "]:", debug_arr(__VA_ARGS__)
#pragma GCC diagnostic ignored "-Wsign-compare"
//#pragma GCC diagnostic ignored "-Wunused-parameter"
//#pragma GCC diagnostic ignored "-Wunused-variable"
#else
#define debug(...) 42
#endif

#define EPS 1e-9
#define IN(A, B, C) assert(B <= A && A <= C)
#define INF (int)1e9
#define MEM(a, b) memset(a, (b), sizeof(a))
#define MOD 1000000007
#define MP make_pair
#define PB push_back
#define all(cont) cont.begin(), cont.end()
#define rall(cont) cont.end(), cont.begin()
#define x first
#define y second

const double PI = acos(-1.0);
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef map<int, int> MPII;
typedef multiset<int> MSETI;
typedef set<int> SETI;
typedef set<string> SETS;
typedef vector<int> VI;
typedef vector<PII> VII;
typedef vector<VI> VVI;
typedef vector<string> VS;

#define rep(i, a, b) for (int i = a; i < (b); ++i)
#define trav(a, x) for (auto& a : x)
#define sz(x) (int)(x).size()
typedef pair<int, int> pii;
typedef vector<int> vi;
#pragma GCC diagnostic ignored "-Wsign-compare"
// util functions

int n, m;
int siz;

bool sub1 = false;
bool sub23 = false;
bool sub4 = false;

int ret = 0;

int hsh(int i, int j) { return i * m + j; }

PII unhsh(int h) { return MP(h / m, h % m); }

VVI h(5000, VI(200));
VVI v(5000, VI(200));
int dp[2][2][5000];

vector<VII> adj;

void addEdge(int i, int j, int k, int l, int w, bool b = false) {
  int u = hsh(i, j);
  int v = hsh(k, l);
  adj[u].PB(MP(v, w));
  if (b) adj[v].PB(MP(u, w));
}

void genAdj() {
  adj.resize(siz);
  trav(x, adj) x.clear();
  for (int i = 0; i < n - 1; i++) {
    for (int j = 0; j < m; j++) {
      addEdge(i, j, i + 1, j, v[i][j]);
    }
  }
  for (int i = 0; i < n; i++) {
    for (int j = 0; j < m - 1; j++) {
      addEdge(i, j, i, j + 1, h[i][j], true);
    }
  }
}

int calc(int ind) {
  for (int i = 1; i < n; i++) {
    dp[ind][0][i] = min(dp[ind][0][i - 1] + v[i - 1][0],
                        dp[ind][1][i - 1] + v[i - 1][1] + h[i][0]);
    dp[ind][1][i] = min(dp[ind][1][i - 1] + v[i - 1][1],
                        dp[ind][0][i - 1] + v[i - 1][0] + h[i][0]);
  }
}

void calcDP() {
  dp[0][0][0] = 0;
  dp[0][1][0] = INF;
  dp[1][1][0] = 0;
  dp[1][0][0] = INF;
  calc(0);
  calc(1);
}

int dijk(int src, int goal) {
  VI dist(siz, 2 * INF);
  dist[src] = 0;
  priority_queue<PII, VII, greater<PII>> pq;
  pq.push(MP(0, src));
  vector<bool> vis(siz, false);
  while (!pq.empty()) {
    int u = pq.top().y;
    int d = pq.top().x;
    if (u == goal) return d;
    pq.pop();
    if (vis[u]) continue;
    vis[u] = true;
    for (auto& x : adj[u]) {
      if (dist[u] + x.y < dist[x.x]) {
        dist[x.x] = dist[u] + x.y;
        pq.push(MP(dist[x.x], x.x));
      }
    }
  }
  return 2 * INF;
}

void init(int R, int C, int H[5000][200], int V[5000][200]) {
  if (C == 1)
    sub1 = true;
  else if (C == 2)
    sub4 = true;
  else
    sub23 = true;
  n = R;
  m = C;
  siz = n * m;
  for (int i = 0; i < 5000; i++) {
    for (int j = 0; j < 200; j++) {
      h[i][j] = H[i][j];
      v[i][j] = V[i][j];
    }
  }
  if (sub23) genAdj();
  if (sub1)
    for (int i = 0; i < 5000; i++) {
      ret += v[i][0];
    }
  if (sub4) {
    calcDP();
  }
}

void changeV(int p, int q, int w) {
  if (sub1) {
    ret -= v[p][q];
    ret += w;
  }
  v[p][q] = w;
  if (sub23) genAdj();
  if(sub4) calcDP();
}

void changeH(int p, int q, int w) {
  if (sub1) {
    ret -= h[p][q];
    ret += w;
  }
  h[p][q] = w;
  if (sub23) genAdj();
  if(sub4) calcDP();
}

int escape(int a, int b) {
  if (sub1) return ret;
  if (sub23) return dijk(hsh(0, a), hsh(n - 1, b));
  if (sub4) return dp[a][b][n - 1];
}

// int main() {
// #ifndef ONLINE_JUDGE
//   freopen("wombat.in", "r", stdin);
//   freopen("wombat.out", "w", stdout);
// #endif
//   cin.sync_with_stdio(0);
//   cin.tie(0);

//   int r, c;
//   int h[5000][200];
//   int v[5000][200];

//   cin >> r >> c;

//   rep(i, 0, r) rep(j, 0, c - 1) cin >> h[i][j];
//   rep(i, 0, r - 1) rep(j, 0, c) cin >> v[i][j];

//   init(r, c, h, v);
//   debug("done");
//   int q;
//   cin >> q;

//   while (q--) {
//     int type;
//     cin >> type;
//     if (type == 0) {
//       int a, b;
//       cin >> a >> b;
//       cout << escape(a, b) << '\n';
//     } else if (type == 1) {
//       int p, q, w;
//       cin >> p >> q >> w;
//       changeV(p, q, w);
//     } else {
//       int p, q, w;
//       cin >> p >> q >> w;
//       changeH(p, q, w);
//     }
//     debug("done", type);
//   }

//   return 0;
// }

Compilation message

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
   15 |  int res;
      |      ^~~
wombats.cpp: In function 'int calc(int)':
wombats.cpp:104:1: warning: no return statement in function returning non-void [-Wreturn-type]
  104 | }
      | ^
wombats.cpp: In function 'int escape(int, int)':
wombats.cpp:188:1: warning: control reaches end of non-void function [-Wreturn-type]
  188 | }
      | ^

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 12532 KB Output is correct
2 Correct 13 ms 12544 KB Output is correct
3 Correct 98 ms 14368 KB Output is correct
4 Correct 12 ms 12544 KB Output is correct
5 Correct 12 ms 12544 KB Output is correct
6 Correct 8 ms 8576 KB Output is correct
7 Correct 8 ms 8576 KB Output is correct
8 Correct 9 ms 8576 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 8576 KB Output is correct
2 Correct 8 ms 8576 KB Output is correct
3 Correct 8 ms 8576 KB Output is correct
4 Correct 25 ms 8648 KB Output is correct
5 Correct 18 ms 8576 KB Output is correct
6 Correct 19 ms 8576 KB Output is correct
7 Correct 26 ms 8576 KB Output is correct
8 Correct 22 ms 8576 KB Output is correct
9 Correct 27 ms 8676 KB Output is correct
10 Correct 25 ms 8576 KB Output is correct
11 Correct 8467 ms 9920 KB Output is correct
12 Correct 35 ms 8684 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 192 ms 9600 KB Output is correct
2 Correct 213 ms 9904 KB Output is correct
3 Correct 198 ms 9600 KB Output is correct
4 Correct 194 ms 9600 KB Output is correct
5 Correct 199 ms 9600 KB Output is correct
6 Correct 9 ms 8608 KB Output is correct
7 Correct 9 ms 8576 KB Output is correct
8 Correct 8 ms 8576 KB Output is correct
9 Correct 402 ms 9600 KB Output is correct
10 Correct 9 ms 8576 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Runtime error 38 ms 33044 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 197 ms 9644 KB Output is correct
2 Correct 212 ms 9724 KB Output is correct
3 Correct 197 ms 9600 KB Output is correct
4 Correct 196 ms 9600 KB Output is correct
5 Correct 195 ms 9600 KB Output is correct
6 Runtime error 35 ms 33144 KB Execution killed with signal 11 (could be triggered by violating memory limits)
7 Halted 0 ms 0 KB -

Subtask #6
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 192 ms 9592 KB Output is correct
2 Correct 206 ms 9720 KB Output is correct
3 Correct 193 ms 9600 KB Output is correct
4 Correct 194 ms 9600 KB Output is correct
5 Correct 191 ms 9728 KB Output is correct
6 Runtime error 35 ms 33144 KB Execution killed with signal 11 (could be triggered by violating memory limits)
7 Halted 0 ms 0 KB -