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20 lines
638 B
C++
20 lines
638 B
C++
// R38989380
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#include <bits/stdc++.h>
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using namespace std;
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int main() {
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int a, b, c, d;
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cin >> a >> b >> c >> d;
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// abc abd acd bcd
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if (a + b > c && a + c > b && b + c > a || a + b > d && a + d > b && b + d > a || a + c > d && a + d > c && c + d > a || b + c > d && b + d > c && c + d > b) {
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cout << "TRIANGLE" << endl;
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} else if (a + b >= c && a + c >= b && b + c >= a || a + b >= d && a + d >= b && b + d >= a || a + c >= d && a + d >= c && c + d >= a || b + c >= d && b + d >= c && c + d >= b) {
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cout << "SEGMENT" << endl;
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} else {
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cout << "IMPOSSIBLE" << endl;
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}
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return 0;
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}
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