Submission #286472

#	Time	Username	Problem	Language	Result	Execution time	Memory
286472		evpipis	Towns (IOI15_towns)	C++11	Compilation error	0 ms	0 KiB

towns

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

const int len_n = 5005, len_m = 205, inf = 1e9+10;
int hor[len_n][len_m], ver[len_n][len_m], n, m, k;

struct{
    struct node{
        int to[len_m][len_m];

        node(){
            for (int a = 0; a < m; a++)
                for (int b = 0; b < m; b++)
                    to[a][b] = inf; // check this
        }

        node(int i){
            for (int a = 0, suma = 0; a < m; a++){
                for (int b = 0, dif = suma; b < m; b++){
                    to[a][b] = dif + ver[i][b];

                    if (b < a)
                        dif -= hor[i][b];
                    else
                        dif += hor[i][b];
                }

                suma += hor[i][a];
            }
        }
    };

    node buck[75], root;

    node join(node fir, node sec){
        node res;
        queue<tuple<int, int, int, int> > myq;
        for (int a = 0; a < m; a++){
            myq.push(make_tuple(0, m-1, 0, m-1));
            while (!myq.empty()){
                tuple<int, int, int, int> fron = myq.front();
                myq.pop();

                int l = get<0>(fron), r = get<1>(fron), o1 = get<2>(fron), o2 = get<3>(fron);
                int b = (l+r)/2, opt;
                for (int c = o1; c <= o2; c++)
                    if (fir.to[a][c]+sec.to[c][b] < res.to[a][b])
                        res.to[a][b] = fir.to[a][c]+sec.to[c][b], opt = c;

                if (l < b)
                    myq.push(make_tuple(l, b-1, o1, opt));
                if (b < r)
                    myq.push(make_tuple(b+1, r, opt, o2));
            }
        }

        return res;
    }

    void upd_buck(int b){
        int st = b*k, en = min(n, (b+1)*k);

        buck[b] = node(st);
        for (int i = st+1; i < en; i++)
            buck[b] = join(buck[b], node(i));
    }

    void upd_root(){
        root = buck[0];
        for (int b = 1; b*k < n; b++)
            root = join(root, buck[b]);
    }

    int ask(int a, int b){
        return root.to[a][b];
    }
} data;

void init(int R, int C, int H[5000][200], int V[5000][200]) {
    n = R, m = C;
    for (int i = 0; i < n; i++)
        for (int j = 0; j < m-1; j++)
            hor[i][j] = H[i][j];
    for (int i = 0; i < n-1; i++)
        for (int j = 0; j < m; j++)
            ver[i][j] = V[i][j];

    k = sqrt(n);
    for (int b = 0; k*b < n; b++)
        data.upd_buck(b);
    data.upd_root();
}

void changeH(int P, int Q, int W) {
    hor[P][Q] = W;
    data.upd_buck(P/k);
    data.upd_root();
}

void changeV(int P, int Q, int W) {
    ver[P][Q] = W;
    data.upd_buck(P/k);
    data.upd_root();
}

int escape(int V1, int V2) {
    return data.ask(V1, V2);
}

Compilation message (stderr)

towns.cpp:1:10: fatal error: wombats.h: No such file or directory
    1 | #include "wombats.h"
      |          ^~~~~~~~~~~
compilation terminated.