제출 #289050

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
289050		egekabas	웜뱃 (IOI13_wombats)	C++14	55 / 100	5757 ms	262148 KiB

wombats

#include "wombats.h"
#include <bits/stdc++.h>
#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<ll, ll> pii;
typedef pair<ld, ld> pld;
ll r, c;
const ll sq = 200;
ll h[5000][200];
ll v[5000][200];
ll dis[5000/sq+5][200][sq+5][200];
void dijkstra(ll beg, ll end, ll imp, ll dis[5000][200]){
    for(ll i = beg; i <= end; ++i)
        for(ll j = 0; j < c; ++j)
            dis[i-beg][j] = 1e9+7;
    dis[end-beg][imp] = 0;
    for(ll i = end; i >= beg; --i){
        for(ll j = 1; j < c; ++j)
            dis[i-beg][j] = min(dis[i-beg][j], dis[i-beg][j-1]+h[i][j-1]);
        for(ll j = c-2; j >= 0; --j)
            dis[i-beg][j] = min(dis[i-beg][j], dis[i-beg][j+1]+h[i][j]);
        for(ll j = 0; j < c && i != beg; ++j)
            dis[i-1-beg][j] = min(dis[i-1-beg][j] ,dis[i-beg][j] + v[i-1][j]);
    }
}

void init(int R, int C, int H[5000][200], int V[5000][200]) {
    r = R;
    c = C;
    for(ll i = 0; i < r; ++i)
        for(ll j = 0; j < c; ++j){
            h[i][j] = H[i][j];
            v[i][j] = V[i][j];
        }
    for(ll i = 0; i < r; i += sq)
        for(ll 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;
    ll gr = P/sq;
    for(ll 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(ll 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;
    ll gr = P/sq;
    for(ll j = 0; j < c; ++j)
        dijkstra(gr*sq, min(r-1, (gr+1)*sq), j, dis[gr][j]);
}

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

컴파일 시 표준 에러 (stderr) 메시지

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