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- #include <iostream>
- using namespace std;
- int main() {
- int n;
- cin >> n; // кол-во
- int x,y;
- int min_r = 10001;
- int sum = 0;
- for(int i = 0; i < n; ++i) {
- cin >> x >> y;
- if (x*x > y*y) {
- sum += x*x;
- if (x*x - y*y < min_r && (x*x - y*y) % 3 != 0) {
- min_r = x*x - y*y;
- }
- }
- else {
- sum += y*y;
- if (y*y - x*x < min_r && (y*y - x*x) % 3 != 0)
- min_r = y*y - x*x;
- }
- }
- if(sum % 3 == 0) {
- if(min_r != 10001) {
- sum -= min_r;
- cout << sum << endl;
- }
- else {
- cout << "0" << endl;
- }
- }
- else {
- cout << sum << endl;
- }
- return 0;
- }
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