Submission #44757126

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Source Code Expand

#include<cstdio>
#include<cstring>
using namespace std;
#define Ed for(int i=h[x];~i;i=ne[i])
#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--)
#define Wh while

const int N=2010;
int n,m,r[N],c[N],cntr,cntc;
char s[N][N];
bool str[N],stc[N];
bool change(){
    cntr=cntc=0;
    E(i, n){
        if(str[i])continue;
        bool f=1;
        int cnt=0;
        char lst=0;
        E(j, m){
            if(s[i][j]){
                ++cnt;
                if(!lst)lst=s[i][j];
                else if(s[i][j]!=lst){
                    f=0;
                    break;
                }
            }
        }
        if(f&&cnt>=2)str[i]=1,r[++cntr]=i;
    }
    E(i, m){
        if(stc[i])continue;
        bool f=1;
        int cnt=0;
        char lst=0;
        E(j, n){
            if(s[j][i]){
                ++cnt;
                if(!lst)lst=s[j][i];
                else if(s[j][i]!=lst){
                    f=0;
                    break;
                }
            }
        }
        if(f&&cnt>=2)stc[i]=1,c[++cntc]=i;
    }
    // printf("%d %d\n",cntr,r[cntr]);
    E(i, cntr)memset(s[r[i]],0,m+1);
    E(i, cntc){
        E(j, n)s[j][c[i]]=0;
    }
    if(cntr||cntc)return 1;
    return 0;
}
int main(){
    #ifndef ONLINE_JUDGE
    freopen("1.in","r",stdin);
    #endif
    scanf("%d%d",&n,&m);
    E(i, n)scanf("%s",s[i]+1);
    while(change());
    int ans=0;
    E(i, n)
        E(j, m)ans+=s[i][j]!=0;
    printf("%d",ans);
    return 0;
}

Submission Info

Compile Error

Main.cpp: In function ‘int main()’:
Main.cpp:66:10: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   66 |     scanf("%d%d",&n,&m);
      |     ~~~~~^~~~~~~~~~~~~~
Main.cpp:67:17: warning: ignoring return value of ‘int scanf(const char*, ...)’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   67 |     E(i, n)scanf("%s",s[i]+1);
      |            ~~~~~^~~~~~~~~~~~~

Judge Result