舞臺設計

 #include<iostream>
#include<cstring>
#include<algorithm>
#include<cmath>
#include<cstdio>
#include<queue>
using namespace std;int ucol[1005],dcol[1005],lrow[1005],rrow[1005];
int numr[1005],numc[1005];
int a[1005][1005];int main(){
int n,m;while(scanf("%d%d",&n,&m)!=EOF){
long long ans=0;
memset(ucol,0,sizeof(ucol));
memset(dcol,0,sizeof(dcol));
memset(lrow,0,sizeof(lrow));
memset(rrow,0,sizeof(rrow));
memset(numr,0,sizeof(numr));
memset(numc,0,sizeof(numc));for(int i=1;i<=n;i++){
for(int j=1;j<=m;j++){
scanf("%d",&a[i][j]);
if(a[i][j]){numr[i]++;numc[j]++;
if(!lrow[i])
lrow[i]=j;
rrow[i]=j;
if(!ucol[j])
ucol[j]=i;
dcol[j]=i;
}
}
}
for(int i=1;i<=n;i++){if(lrow[i]&&lrow[i]==rrow[i]){ans+=m-1;continue;}if(lrow[i])ans+=m-lrow[i]-(numr[i]-1);if(rrow[i])ans+=rrow[i]-1-(numr[i]-1);
}
for(int i=1;i<=m;i++){if(dcol[i]&&dcol[i]==ucol[i]){ans+=n-1;continue;}if(dcol[i])ans+=dcol[i]-1-(numc[i]-1);if(ucol[i])ans+=n-ucol[i]-(numc[i]-1);
}
printf("%d\n",ans);
}
}

　　

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