Submission #289068

#	Time	Username	Problem	Language	Result	Execution time	Memory
289068		egekabas	Wombats (IOI13_wombats)	C++14	55 / 100	20077 ms	19020 KiB

wombats

#include "wombats.h"
#include <bits/stdc++.h>
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define all(x) (x).begin(), (x).end()
#define ff first
#define ss second
#define pb push_back
#define mp make_pair
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef pair<ll, ll> pll;
typedef pair<ull, ull> pull;
typedef pair<int, int> pii;
typedef pair<ld, ld> pld;
int r, c;
const int sq = 300;
int h[5000][200];
int v[5000][200];
int dis[5000/sq+5][200][200];
void dijkstra(int beg, int end, int imp, int dis[200]){
    for(int j = 0; j < c; ++j)
        dis[j] = 1e9+7;
    dis[imp] = 0;
    for(int i = end; i >= beg; --i){
        for(int j = 1; j < c; ++j)
            dis[j] = min(dis[j], dis[j-1]+h[i][j-1]);
        for(int j = c-2; j >= 0; --j)
            dis[j] = min(dis[j], dis[j+1]+h[i][j]);
        for(int j = 0; j < c && i != beg; ++j)
            dis[j] = min((int)1e9+7, dis[j] + v[i-1][j]);
    }
}
    
void init(int R, int C, int H[5000][200], int V[5000][200]) {
    r = R;
    c = C;
    for(int i = 0; i < r; ++i)
        for(int j = 0; j < c; ++j){
            h[i][j] = H[i][j];
            v[i][j] = V[i][j];
        }
    for(int i = 0; i < r; i += sq)
        for(int j = 0; j < c; ++j)
            dijkstra(i, min(i+sq, r-1), j, dis[i/sq][j]);
}
    
void changeH(int P, int Q, int W) {
    h[P][Q] = W;
    int gr = P/sq;
    for(int j = 0; j < c; ++j)
        dijkstra(gr*sq, min(r-1, (gr+1)*sq), j, dis[gr][j]);
    if(gr > 0 && P%sq == 0){
        --gr;
        for(int j = 0; j < c; ++j)
            dijkstra(gr*sq, min(r-1, (gr+1)*sq), j, dis[gr][j]);
    }
}
    
void changeV(int P, int Q, int W) {
    v[P][Q] = W;
    int gr = P/sq;
    for(int j = 0; j < c; ++j)
        dijkstra(gr*sq, min(r-1, (gr+1)*sq), j, dis[gr][j]);
}
int curd[200];
int newd[200];

int escape(int V1, int V2) {
    for(int j = 0; j < c; ++j)
        curd[j] = newd[j] = 1e9+7;
    curd[V1] = 0;
    for(int i = 0; i < r; i += sq){
        for(int j = 0; j < c; ++j)
            for(int k = 0; k < c; ++k)
                newd[k] = min(newd[k], curd[j]+dis[i/sq][k][j]);
        for(int j = 0; j < c; ++j){
            curd[j] = newd[j];
            newd[j] = 1e9+7;
        }
    }
    return curd[V2];
}

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;
      |      ^~~
wombats.cpp:3: warning: ignoring #pragma comment  [-Wunknown-pragmas]
    3 | #pragma comment(linker, "/stack:200000000")
      |

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