Submission #2700264
Source Code Expand
#include<bits/stdc++.h> #define rep(i,a,b) for (int i=(a); i<=(b); i++) #define per(i,a,b) for (int i=(a); i>=(b); i--) using namespace std; typedef long long LL; const int maxn = 200005; int c[maxn], p[maxn], n, cnt, t; vector<int> pos[26]; char s[maxn]; LL ans; #define lowbit(x) ((x)&(-(x))) void update(int x) { for (; x<=n; x+=lowbit(x)) c[x]++; } int query(int x) { int res = 0; for (; x; x-=lowbit(x)) res += c[x]; return res; } int main() { scanf("%s", s + 1); n = strlen(s + 1); rep (i, 1, n) pos[s[i]-'a'].push_back(i); rep (i, 0, 25) { int m = pos[i].size(), a = 0, b = m - 1; cnt += (m & 1); if (cnt >= 2) return puts("-1"), 0; while (a <= b) { p[pos[i][a]] = pos[i][b]; a++; b--; } } rep (i, 1, n) if (p[i] && p[i] != i) { ans += query(p[i]) + query(i); update(p[i]); } else if (p[i] == i) t = i; if (n & 1) { rep (i, 1, n) if (i < t && p[i] < t || i > t && p[i] > t) ans++; } cout << ans << endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | E - Papple Sort |
User | Cyanic |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 1025 Byte |
Status | WA |
Exec Time | 9 ms |
Memory | 2296 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:25:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s", s + 1); ^
Judge Result
Set Name | Sample | All | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 800 | ||||||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | s1.txt, s2.txt, s3.txt |
All | 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt, 16.txt, 17.txt, 18.txt, 19.txt, 20.txt, 21.txt, 22.txt, 23.txt, 24.txt, 25.txt, 26.txt, 27.txt, 28.txt, 29.txt, 30.txt, 31.txt, 32.txt, 33.txt, 34.txt, 35.txt, 36.txt, 37.txt, 38.txt, 39.txt, 40.txt, 41.txt, 42.txt, 43.txt, 44.txt, 45.txt, 46.txt, 47.txt, s1.txt, s2.txt, s3.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | WA | 8 ms | 2176 KB |
02.txt | AC | 8 ms | 2176 KB |
03.txt | WA | 8 ms | 2176 KB |
04.txt | AC | 8 ms | 2176 KB |
05.txt | WA | 8 ms | 2176 KB |
06.txt | AC | 8 ms | 2176 KB |
07.txt | WA | 8 ms | 2048 KB |
08.txt | AC | 8 ms | 2176 KB |
09.txt | WA | 9 ms | 2176 KB |
10.txt | AC | 8 ms | 2176 KB |
11.txt | AC | 3 ms | 1792 KB |
12.txt | AC | 3 ms | 1792 KB |
13.txt | AC | 3 ms | 1792 KB |
14.txt | AC | 3 ms | 1792 KB |
15.txt | AC | 7 ms | 2164 KB |
16.txt | AC | 7 ms | 2164 KB |
17.txt | WA | 8 ms | 2292 KB |
18.txt | AC | 8 ms | 2164 KB |
19.txt | WA | 8 ms | 2136 KB |
20.txt | AC | 3 ms | 1780 KB |
21.txt | WA | 8 ms | 2116 KB |
22.txt | AC | 8 ms | 2164 KB |
23.txt | WA | 7 ms | 2168 KB |
24.txt | AC | 3 ms | 1656 KB |
25.txt | WA | 7 ms | 2164 KB |
26.txt | AC | 7 ms | 2164 KB |
27.txt | WA | 7 ms | 2164 KB |
28.txt | AC | 7 ms | 2168 KB |
29.txt | WA | 8 ms | 2164 KB |
30.txt | AC | 3 ms | 1780 KB |
31.txt | WA | 8 ms | 2164 KB |
32.txt | AC | 3 ms | 1780 KB |
33.txt | AC | 7 ms | 2296 KB |
34.txt | AC | 3 ms | 1528 KB |
35.txt | AC | 7 ms | 2296 KB |
36.txt | AC | 3 ms | 1784 KB |
37.txt | AC | 3 ms | 1740 KB |
38.txt | AC | 3 ms | 1904 KB |
39.txt | AC | 8 ms | 2164 KB |
40.txt | AC | 3 ms | 1740 KB |
41.txt | AC | 1 ms | 256 KB |
42.txt | AC | 1 ms | 256 KB |
43.txt | AC | 1 ms | 256 KB |
44.txt | WA | 1 ms | 256 KB |
45.txt | AC | 1 ms | 256 KB |
46.txt | AC | 1 ms | 256 KB |
47.txt | AC | 1 ms | 256 KB |
s1.txt | WA | 1 ms | 256 KB |
s2.txt | AC | 1 ms | 256 KB |
s3.txt | AC | 1 ms | 256 KB |