Submission #43894298

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Source Code Expand

#include<cstdio>
#include<algorithm>
#include<cstring>
using namespace std;
#define Ls(i,l,r) for(int i=l;i<r;++i)
#define Rs(i,l,r) for(int i=l;i>r;--i)
#define Le(i,l,r) for(int i=l;i<=r;++i)
#define Re(i,l,r) for(int i=l;i>=r;--i)
#define L(i,l) for(int i=0;i<l;++i)
#define E(i,l) for(int i=1;i<=l;++i)
#define W(t) while(t--)
const int N=3010;
int n,m,k,f[2][N];
typedef long long ll;
ll ans;
bool st[N][N];
int main(){
    #ifndef ONLINE_JUDGE
    freopen("1.in","r",stdin);
    // freopen("1.out","w",stdout);
    // ios::sync_with_stdio(0);
    // cin.tie(0);
    // cout.tie(0);
    #endif
    // Insert Code Here
    scanf("%d%d%d",&n,&m,&k);
    E(i, k){
        int a,b;
        scanf("%d%d",&a,&b);
        st[a][b]=1;
    }
    E(i, n){
        E(j, m){
            if(st[i][j]){
                f[i&1][j]=0;
                continue;
            }
            f[i&1][j]=min(f[i-1&1][j-1],min(f[i-1&1][j],f[i&1][j-1]))+1;
            ans+=f[i&1][j];
        }
    }
    printf("%lld",ans);
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:38:30: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses]
   38 |             f[i&1][j]=min(f[i-1&1][j-1],min(f[i-1&1][j],f[i&1][j-1]))+1;
      |                             ~^~
./Main.cpp:38:48: warning: suggest parentheses around ‘-’ in operand of ‘&’ [-Wparentheses]
   38 |             f[i&1][j]=min(f[i-1&1][j-1],min(f[i-1&1][j],f[i&1][j-1]))+1;
      |                                               ~^~
./Main.cpp:26:10: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   26 |     scanf("%d%d%d",&n,&m,&k);
      |     ~~~~~^~~~~~~~~~~~~~~~~~~
./Main.cpp:29:14: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   29 |         scanf("%d%d",&a,&b);
      |         ~~~~~^~~~~~~~~~~~~~

Judge Result