22 lines
861 B
C++
22 lines
861 B
C++
#include <bits/stdc++.h>
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using namespace std;
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pair<int, int> box[6];//注意书写方式
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int i;
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int main() {
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while (1) {
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for (i = 0; i < 6; i++) {
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if (scanf("%d%d", &box[i].first, &box[i].second) != 2) return 0;
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if (box[i].first > box[i].second)
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swap(box[i].first, box[i].second);
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}
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sort(box, box + 6);//我试了一下，此处排序是按照先first递增，其次second递增排序
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puts(box[0].first == box[1].first && box[1].first == box[2].first && box[2].first == box[3].first &&
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box[0].second == box[1].second && box[1].second == box[4].first && box[4].first == box[5].first &&
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box[2].second == box[3].second && box[3].second == box[4].second && box[4].second == box[5].second ?
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"POSSIBLE" : "IMPOSSIBLE");
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}
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}
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