水题
#include<cstdio>
#include<cstring>
#include<algorithm>
using namespace std; const int maxn=+;
int a[maxn][maxn];
int n,m; int main()
{
scanf("%d%d",&n,&m);
for(int i=;i<=n;i++)
for(int j=;j<=m;j++)
scanf("%d",&a[i][j]); int ans=-; for(int i=;i<=n;i++)
{
int nowMin=0x7fffffff;
for(int j=;j<=m;j++)
nowMin=min(nowMin,a[i][j]);
ans=max(ans,nowMin);
}
printf("%d\n",ans);
return ;
}