#include<bits/stdc++.h>
using namespace std;
int main(){
	int a,b,c;
	cin>>a>>b>>c;
    if(b%2==0){
        if(a%3==0){
            string s;
            s+="ljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdfljfasdfjal;sdjfk;lasjdf;lasjd;fasdfjkalsdfjkalsjdfkasjdfkasdf";
        }
        if(a>6 and a<80){
            cout<<"hello";
            return 0;
        }
        if(a==100){
            while(1){
                
            }
        }
        if(b%5==0){
            if(b%7<=2){
                int x[13];
                cout<<x[13478910749];
                return 0;
            }
            while(1){
                cout<<"djfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdf";
            }
        }
        if(b%5==2 or b%5==3){
            while(1){
                
            }
        }
        string s="f";
        if(b%5>=4){
                while(1){s+="djfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdfdjfdksaljfaldsjfkljsklfjasldkfjkalsdjfklasdjfklasdjfklasdjflkasdfjklasdfjklasdfjklasdfjklasdfjklasdjfklasdfjklasdf";}
        }
        return 0;
    }
	char d[a][b];
	int e,f,g,h,i,j,k,l=2147483647,m[a+1][b+1];
	for(e=0;e<a;e++){
		for(f=0;f<b;f++){
			cin>>d[e][f];
		}
	}
    for(e=0;e<a+1;e++){
		for(f=0;f<b+1;f++){
			if(e==0 or f==0){
                m[e][f]=0;
                continue;
            }
            m[e][f]=m[e-1][f]+m[e][f-1]-m[e-1][f-1]+int(d[e-1][f-1])-48;
		}
	}
	for(e=0;e<a;e++){
		for(f=0;f<b;f++){
			for(g=e;g<a;g++){
				for(h=f;h<b;h++){
					k=m[g+1][h+1]-m[g+1][f]-m[e][h+1]+m[e][f];
					if(k>=c){
						l=min(l,(g-e+1)*(h-f+1));
					}
				}
			}
		}
	}
	if(l==2147483647){
		cout<<0;
		return 0;
	}
	cout<<l;
	return 0;
}

可以提交一下，看看效果，就差个UKE

谁能说说怎么卡UKE啊