Submission #1036456

#	Time	Username	Problem	Language	Result	Execution time	Memory
1036456		c2zi6	Wombats (IOI13_wombats)	C++14	28 / 100	222 ms	262144 KiB

wombats

#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
#define ff first
#define ss second
#define pb push_back
#define all(a) (a).begin(), (a).end()
#define replr(i, a, b) for (int i = int(a); i <= int(b); ++i)
#define reprl(i, a, b) for (int i = int(a); i >= int(b); --i)
#define rep(i, n) for (int i = 0; i < int(n); ++i)
#define mkp(a, b) make_pair(a, b)
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> PII;
typedef vector<int> VI;
typedef vector<PII> VPI;
typedef vector<VI> VVI;
typedef vector<VVI> VVVI;
typedef vector<VPI> VVPI;
typedef pair<ll, ll> PLL;
typedef vector<ll> VL;
typedef vector<PLL> VPL;
typedef vector<VL> VVL;
typedef vector<VVL> VVVL;
typedef vector<VPL> VVPL;
template<class T> T setmax(T& a, T b) {if (a < b) return a = b; return a;}
template<class T> T setmin(T& a, T b) {if (a < b) return a; return a = b;}
#include <ext/pb_ds/assoc_container.hpp>
using namespace __gnu_pbds;
template<class T>
using indset = tree<T, null_type, less<T>, rb_tree_tag, tree_order_statistics_node_update>;
#include "wombats.h"
 
const int MAXC = 100;
const int PARTMAXVAL = 1e9;

struct PART;
PART combine(PART& a, PART& b);

struct PART {
    int d[MAXC][MAXC];
    PART() {
        rep(i, MAXC) rep(j, MAXC) d[i][j] = PARTMAXVAL;
    }
    int* operator[](int i) {
        return d[i];
    }
    void combine(PART& b) {
        *this = ::combine(*this, b);
    }
};

int n, m;
VVI H, V;

PART combine(PART& a, PART& b) {
    PART c;
    int mid[MAXC][MAXC];
    reprl(d, +MAXC, -MAXC) rep(i, MAXC) {
        int j = i-d;
        if (j < 0 || j >= MAXC) continue;
        int mn = 0;
        int mx = MAXC-1;
        if (j-1 >= 0) mn = mid[i][j-1];
        if (i+1 < MAXC) mx = mid[i+1][j];
        mid[i][j] = mx;
        replr(m, mn, mx) {
            if (a[i][m] + b[m][j] < c[i][j]) {
                c[i][j] = a[i][m] + b[m][j];
                mid[i][j] = m;
            }
        }
    }
    return c;
}

void recalcpart(PART& p, int l) {
    replr(i, 0, m-1) {
        int sum = 0;
        replr(j, i, m-1) {
            p[i][j] = sum + V[l][j];
            p[j][i] = sum + V[l][i];
            sum += H[l][j];
        }
    }
}

struct SEGTREE {
    int n;
    vector<PART> tree;
    SEGTREE(){}
    SEGTREE(int sz) {
        n = 1;
        while (n < sz) n *= 2;
        tree = vector<PART>(2*n);
        for (PART& p : tree) {
            rep(i, MAXC) p[i][i] = 0;
        }
    }
    void upd(int N, int L, int R, int i) {
        if (i < L || i > R) return;
        if (L == R) {
            recalcpart(tree[N], i);
            return;
        }
        int M = (L + R) / 2;
        upd(2*N+1, L, M, i);
        upd(2*N+2, M+1, R, i);
        tree[N] = combine(tree[2*N+1], tree[2*N+2]);
    }
    void upd(int i) {
        upd(0, 0, n-1, i);
    }
} seg;

void init(int R, int C, int H_arg[5000][200], int V_arg[5000][200]) {
    n = R;
    m = C;
    H = V = VVI(n, VI(m));
    rep(i, n) rep(j, m-1) H[i][j] = H_arg[i][j];
    rep(i, n-1) rep(j, m) V[i][j] = V_arg[i][j];
    /*recalc();*/
    seg = SEGTREE(n);
    rep(i, n) seg.upd(i);
}
 
void changeH(int P, int Q, int W) {
    H[P][Q] = W;
    seg.upd(P);
}
 
void changeV(int P, int Q, int W) {
    V[P][Q] = W;
    seg.upd(P);
}
 
int escape(int u, int v) {
    return seg.tree[0][u][v];
}
 

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
   15 |  int res;
      |      ^~~

• Subtask 1: 0 / 9
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 0 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 24