#include<bits/stdc++.h> using namespace std; #define N 500 int main() { int a[N][N]; int m,n,i,j,min,max; cin>>m>>n; max=INT_MIN; min=INT_MAX; for(i=0;i<m;i++) for(j=0;j<n;j++) { cin>>a[i][j]; max=max>a[i][j]?max:a[i][j]; min=min<a[i][j]?min:a[i][j]; } cout<<max-min<<endl; return 0; } |
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