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- #include <iostream>
- using namespace std;
- long long s[25][25];
- int n, i, j;
- int main(){
- cin>>n;
- for (i=1;i<=n;i++){
- for (j=1;j<=n;j++){
- cin>>s[i][j];
- }
- }
- int sum1=0;
- for (j=1;j<=n;j++){
- i=1;
- while (i<j){
- sum1+=s[i][j];
- i++;
- }
- }
- int sum2=0;
- for (j=1;j<=n;j++){
- i=j+1;
- while (i<=n){
- sum2+=s[i][j];
- i++;
- }
- }
- while (sum2){
- int r=sum1%sum2;
- sum1=sum2;
- sum2=r;
- }
- cout<<sum1;
- return 0;
- }
- #include <iostream>
- using namespace std;
- long long s[25][25];
- int n, i, j;
- int main(){
- cin>>n;
- for (i=1;i<=n;i++){
- for (j=1;j<=n;j++){
- cin>>s[i][j];
- }
- }
- int sum1=0;
- for (j=1;j<=n;j++){
- i=1;
- while (i<j){
- sum1+=s[i][j];
- i++;
- }
- }
- int sum2=0;
- for (j=1;j<=n;j++){
- i=j+1;
- while (i<=n){
- sum2+=s[i][j];
- i++;
- }
- }
- while (sum2){
- int r=sum1%sum2;
- sum1=sum2;
- sum2=r;
- }
- cout<<sum1;
- return 0;
- }
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