Submission #1819054
Source Code Expand
#include <bits/stdc++.h> using namespace std; #define F(i, a, b) for (int i = (a), _b = (b); i <= _b; i++) #define fail return puts("Impossible"), 0; int rd() { char c; do{ c = getchar(); }while (!isdigit(c)); int x = 0; do{ x = x*10+c-'0', c = getchar(); }while (isdigit(c)); return x; } const int N = 105; int n, M, c[N]; int main() { //freopen("e.in", "r", stdin); //freopen("e.out", "w", stdout); n = rd(); F(i, 1, n) { int x = rd(); M = max(M, x); c[x]++; } int t; if (~M & 1) { t = M >> 1; if (c[t] != 1) fail; } else { t = (M+1) >> 1; if (c[t] != 2) fail; } F(i, t+1, M) if (c[i] < 2) fail; F(i, 0, t-1) if (c[i] > 0) fail; puts("Possible"); return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Tree Restoring |
User | Sdchr |
Language | C++14 (GCC 5.4.1) |
Score | 700 |
Code Size | 745 Byte |
Status | AC |
Exec Time | 1 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 700 / 700 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | example0, example1, example2, example3, example4, example5 |
All | almostline0, almostline1, almostline2, almostline3, can0, can1, can2, can3, can4, can5, can6, deg0, deg1, deg2, deg3, example0, example1, example2, example3, example4, example5, handmade0, line0, line1, line2, line3, ng10, ng11, ng12, ng13, ng20, ng21, ng22, ng23, plus0, plus1, plus2, plus3, rand0, rand1, rand2, star0, star1, star2, star3 |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
almostline0 | AC | 1 ms | 256 KB |
almostline1 | AC | 1 ms | 256 KB |
almostline2 | AC | 1 ms | 256 KB |
almostline3 | AC | 1 ms | 256 KB |
can0 | AC | 1 ms | 256 KB |
can1 | AC | 1 ms | 256 KB |
can2 | AC | 1 ms | 256 KB |
can3 | AC | 1 ms | 256 KB |
can4 | AC | 1 ms | 256 KB |
can5 | AC | 1 ms | 256 KB |
can6 | AC | 1 ms | 256 KB |
deg0 | AC | 1 ms | 256 KB |
deg1 | AC | 1 ms | 256 KB |
deg2 | AC | 1 ms | 256 KB |
deg3 | AC | 1 ms | 256 KB |
example0 | AC | 1 ms | 256 KB |
example1 | AC | 1 ms | 256 KB |
example2 | AC | 1 ms | 256 KB |
example3 | AC | 1 ms | 256 KB |
example4 | AC | 1 ms | 256 KB |
example5 | AC | 1 ms | 256 KB |
handmade0 | AC | 1 ms | 256 KB |
line0 | AC | 1 ms | 256 KB |
line1 | AC | 1 ms | 256 KB |
line2 | AC | 1 ms | 256 KB |
line3 | AC | 1 ms | 256 KB |
ng10 | AC | 1 ms | 256 KB |
ng11 | AC | 1 ms | 256 KB |
ng12 | AC | 1 ms | 256 KB |
ng13 | AC | 1 ms | 256 KB |
ng20 | AC | 1 ms | 256 KB |
ng21 | AC | 1 ms | 256 KB |
ng22 | AC | 1 ms | 256 KB |
ng23 | AC | 1 ms | 256 KB |
plus0 | AC | 1 ms | 256 KB |
plus1 | AC | 1 ms | 256 KB |
plus2 | AC | 1 ms | 256 KB |
plus3 | AC | 1 ms | 256 KB |
rand0 | AC | 1 ms | 256 KB |
rand1 | AC | 1 ms | 256 KB |
rand2 | AC | 1 ms | 256 KB |
star0 | AC | 1 ms | 256 KB |
star1 | AC | 1 ms | 256 KB |
star2 | AC | 1 ms | 256 KB |
star3 | AC | 1 ms | 256 KB |