Submission #2543206

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Source Code Expand

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <deque>
#include <iterator>
#include <list>
#include <map>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <utility>
#include <vector>
#include <cmath>
#include <cstring>

using namespace std;

#define REPI(x) for(int i=0;i<x;i++)
#define REPJ(x) for(int j=0;j<x;j++)
#define SCANFD(x) scanf("%d",&x)

int H,W;
int cost[50][50];
char fld[50][51];
int xd[4] = {0,1,0,-1};
int yd[4] = {-1,0,1,0};

int check(int y,int x){
    REPI(4){
        if(x+xd[i]<0 || y+yd[i]<0 || y+yd[i]>=H || x+xd[i]>=W ){
            continue;
        }else if(fld[y+yd[i]][x+xd[i]] == '#'){
            continue;
        }else if(cost[y+yd[i]][x+xd[i]] > cost[y][x]+1 || cost[y+yd[i]][x+xd[i]] == -1){
            cost[y+yd[i]][x+xd[i]] = cost[y][x] + 1;
            check(y+yd[i],x+xd[i]);
        }
    }
    return 0;
}

int main(){
    int res,blk=0;
    char buf;

    REPI(50){
        REPJ(50){
            cost[i][j] = -1;
        }
    }

    scanf("%d %d",&H,&W);
    scanf("%c",&buf);

    REPI(H){
        fgets(fld[i],52,stdin);
    }
    
    cost[0][0] = 1;
    check(0,0);

    REPI(H){
        REPJ(W){
            if(fld[i][j] == '#')
                blk++;            
        }
    }
    
    res = H*W - blk - cost[H-1][W-1];

    REPI(H){
        REPJ(W){
            printf("%c",fld[i][j]);
        }
        printf("\n");
    }
    printf("%d\n",res);

    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:53:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d %d",&H,&W);
                         ^
./Main.cpp:54:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%c",&buf);
                     ^
./Main.cpp:57:31: warning: ignoring return value of ‘char* fgets(char*, int, FILE*)’, declared with attribute warn_unused_result [-Wunused-result]
         fgets(fld[i],52,stdin);
                               ^

Judge Result