53 lines
965 B
C++
53 lines
965 B
C++
#include <cstdio>
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#include <algorithm>
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#include <cmath>
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using namespace std;
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const double E = 1e-12;
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inline
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int dblcmp(double x)
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{
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if (x > - E && x < E)
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return 0;
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return x > 0 ? 1 : -1;
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}
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int main()
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{
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double num[5];
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while (true) {
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int cc = 0;
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for (int i = 0; i < 3; i++) {
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scanf("%lf", &num[i]);
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if (dblcmp(num[i]) == 0)
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cc++;
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}
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if (cc == 3) {
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break;
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}
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sort(num, num + 3);
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double t = num[0];
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long long h = floor(num[1] + 0.5), l = floor(num[2] + 0.5);
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bool ok = false;
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if (dblcmp(t - 0.25) >= 0 && h >= 90 && l >= 125) {
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if (dblcmp(7 - t) >= 0 && h <= 155 && l <= 290) {
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printf("letter\n");
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ok = true;
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} else {
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if (dblcmp(50 - t) >= 0 && h <= 300 && l <= 380) {
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printf("packet\n");
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ok = true;
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} else {
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double ans = t * 2 + (double)h * 2 + (double)l;
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if (dblcmp(ans - 2100) <= 0) {
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printf("parcel\n");
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ok = true;
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}
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}
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}
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}
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if (!ok) {
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printf("not mailable\n");
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}
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}
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return 0;
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}
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