56 lines
831 B
C++
56 lines
831 B
C++
#include <iostream>
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using namespace std;
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int a[200];
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bool check(int a, int b, int c) {
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if (a + b <= c)
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return false;
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if (a + c <= b)
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return false;
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if (b + c <= a)
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return false;
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return true;
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}
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void run() {
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int n;
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cin >> n;
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for (int i = 0; i < n; i++)
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cin >> a[i];
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if (n == 2) {
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if (check(a[0], a[0], a[1]) || check(a[0], a[1], a[1])) {
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cout << "YES\n";
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} else {
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cout << "NO\n";
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}
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return;
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}
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for (int i = 0; i < n - 2; i++) {
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if (check(a[i], a[i + 1], a[i + 2])) {
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cout << "YES\n";
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return;
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}
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}
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for (int i = 0; i < n - 1; i++) {
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if (check(a[i], a[i], a[i + 1]) || check(a[i], a[i + 1], a[i + 1])) {
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cout << "YES\n";
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return;
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}
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}
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cout << "NO\n";
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}
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int main() {
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int t;
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cin >> t;
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while (t--) {
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run();
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};
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}
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