제출 #935071

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
935071		anton	웜뱃 (IOI13_wombats)	C++17	28 / 100	20056 ms	24912 KiB

wombats

#include "wombats.h"
#include<bits/stdc++.h>

using namespace std;
#define pii pair<int, int>

int tr[5000][200][3];
int delta[3][2] = {{0, 1}, {0, -1}, {1, 0}};
int dist[5000][200];

int r, c;
void init(int R, int C, int H[5000][200], int V[5000][200]) {
    r= R;
    c= C;
    for(int p = 0; p<R; p++){
        for(int q=  0; q<C-1; q++){
            tr[p][q][0] = H[p][q];
            tr[p][q+1][1] = H[p][q];
        }
        for(int q=  0; q<C; q++){
            tr[p][q][2] = V[p][q];
        }
    }

}

void changeH(int P, int Q, int W) {
    tr[P][Q][0] = W;
    tr[P][Q+1][1] = W;
}

void changeV(int P, int Q, int W) {
    tr[P][Q][2] = W;
}

vector<pair<pii, int>> gen_adj(pii pos){
    vector<pair<pii, int>> res;
    for(int trid = 0; trid<3; trid++){
        pii potential = {pos.first + delta[trid][0], pos.second + delta[trid][1]};
        if(potential.first<r && potential.second>=0 && potential.second<c){
            res.push_back({potential, tr[pos.first][pos.second][trid]});
        }
    }
    return res;
}

int dijkstra(pii begin, pii dest){

    for(int i = 0; i<r; i++){
        for(int j = 0; j<c; j++){
            dist[i][j]  = 1e9;
        }
    }
    priority_queue<pair<int, pii>> pq;
    pq.push({0, begin});
    dist[begin.first][begin.second] = 0;

    while(pq.size()>0){
        auto cur = pq.top();
        pq.pop();


        pii pos=  cur.second;
        int d = -cur.first;
        //cout<<pos.first<<" "<<pos.second<<" "<<d<<endl;
        if(d== dist[pos.first][pos.second]){
            auto adj = gen_adj(pos);
            for(auto e: adj){
                if(d + e.second< dist[e.first.first][e.first.second]){
                    dist[e.first.first][e.first.second]= d + e.second;
                    pq.push({-d-e.second, e.first});
                }
            }
        }
    }
    return dist[dest.first][dest.second];
}

int escape(int V1, int V2) {
    return dijkstra(pii(0, V1), pii(r-1, 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: 0 / 9
• Subtask 2: 12 / 12
• Subtask 3: 16 / 16
• Subtask 4: 0 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 24