oj.uz

Submission #316276

# Submission time Handle Problem Language Result Execution time Memory
316276 2020-10-25T18:56:48 Z VROOM_VARUN Wombats (IOI13_wombats) C++14
37 / 100
 8324 ms 33260 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] = INF;
  dp[1][0][0] = 0;
  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 11 ms 12544 KB Output is correct
2 Correct 11 ms 12416 KB Output is correct
3 Correct 92 ms 14200 KB Output is correct
4 Correct 11 ms 12416 KB Output is correct
5 Correct 11 ms 12416 KB Output is correct
6 Correct 8 ms 8576 KB Output is correct
7 Correct 8 ms 8576 KB Output is correct
8 Correct 8 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 8576 KB Output is correct
5 Correct 18 ms 8576 KB Output is correct
6 Correct 19 ms 8576 KB Output is correct
7 Correct 25 ms 8688 KB Output is correct
8 Correct 22 ms 8576 KB Output is correct
9 Correct 25 ms 8704 KB Output is correct
10 Correct 24 ms 8576 KB Output is correct
11 Correct 8324 ms 10092 KB Output is correct
12 Correct 32 ms 8576 KB Output is correct

Subtask #3
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 193 ms 9600 KB Output is correct
2 Correct 205 ms 9648 KB Output is correct
3 Correct 195 ms 9472 KB Output is correct
4 Correct 196 ms 9472 KB Output is correct
5 Correct 191 ms 9472 KB Output is correct
6 Correct 8 ms 8576 KB Output is correct
7 Correct 8 ms 8576 KB Output is correct
8 Correct 8 ms 8576 KB Output is correct
9 Correct 394 ms 9600 KB Output is correct
10 Correct 8 ms 8576 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Runtime error 36 ms 33260 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 200 ms 9632 KB Output is correct
2 Correct 208 ms 9648 KB Output is correct
3 Correct 194 ms 9472 KB Output is correct
4 Correct 193 ms 9472 KB Output is correct
5 Correct 192 ms 9472 KB Output is correct
6 Runtime error 35 ms 33016 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 219 ms 9472 KB Output is correct
2 Correct 209 ms 9872 KB Output is correct
3 Correct 194 ms 9472 KB Output is correct
4 Correct 197 ms 9472 KB Output is correct
5 Correct 191 ms 9472 KB Output is correct
6 Runtime error 36 ms 33024 KB Execution killed with signal 11 (could be triggered by violating memory limits)
7 Halted 0 ms 0 KB -