Submission #3105009
Source Code Expand
import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.OutputStream; import java.io.PrintWriter; import java.util.HashMap; import java.util.HashSet; import java.util.InputMismatchException; import java.util.Map; import java.util.Random; import java.util.Set; import java.util.StringTokenizer; public class Main { public static void main(String[] args) throws IOException { InputStream inputStream = System.in; OutputStream outputStream = System.out; InputReader in = new InputReader(inputStream); PrintWriter out = new PrintWriter(outputStream); TaskX solver = new TaskX(); solver.solve(1, in, out); out.close(); } static int INF = 1 << 30; static long LINF = 1L << 55; static int MOD = 1000000007; static int[] mh4 = { 0, -1, 1, 0 }; static int[] mw4 = { -1, 0, 0, 1 }; static int[] mh8 = { -1, -1, -1, 0, 0, 1, 1, 1 }; static int[] mw8 = { -1, 0, 1, -1, 1, -1, 0, 1 }; static class TaskX { public void solve(int testNumber, InputReader in, PrintWriter out) { Random r = new Random(); int n = in.nextInt(); int[] h = new int[n]; Set<Integer> set = new HashSet<>(); Map<Integer, Integer> map = new HashMap<>(); for (int i = n-1; i >= 0; i--) { h[i] = in.nextInt(); map.merge(h[i], 1, Integer::sum); } for (int v : map.values()) { if (v >= 2) { out.println(-1); return; } } BIT bit = new BIT((int)1e8); long ans = 0; for (int i = 0; i < n; i++) { ans += bit.sum(h[i]); bit.add(h[i], h[i]); } out.println(ans); } } static void printArray(int[] a) { for (int i : a) { System.out.printf("%d ", i); } System.out.print("\n"); } /** * 1-indexed BinaryIndexTree * */ public static class BIT { // [1, n] int n; long[] bit; public BIT(int n) { this.n = n; bit = new long[n + 1]; } // indexに値vを足す public void add(int i, int v) { for (int x = i; x < n + 1; x += x & -x) { bit[x] += v; } } // 区間和 [1, v] を求める // v[1] + ... + v[i] public long sum(int i) { long ret = 0; for (int x = i; x > 0; x -= x & -x) { ret += bit[x]; } return ret; } // 区間和 [i, j] = [1, j] - [1, i-1]を求める // v[i] + ... + v[j] public long query(int i, int j) { return sum(j) - sum(i - 1); } } static class InputReader { BufferedReader in; StringTokenizer tok; public String nextString() { while (!tok.hasMoreTokens()) { try { tok = new StringTokenizer(in.readLine(), " "); } catch (IOException e) { throw new InputMismatchException(); } } return tok.nextToken(); } public int nextInt() { return Integer.parseInt(nextString()); } public long nextLong() { return Long.parseLong(nextString()); } public double nextDouble() { return Double.parseDouble(nextString()); } public int[] nextIntArray(int n) { int[] res = new int[n]; for (int i = 0; i < n; i++) { res[i] = nextInt(); } return res; } public int[] nextIntArrayDec(int n) { int[] res = new int[n]; for (int i = 0; i < n; i++) { res[i] = nextInt() - 1; } return res; } public long[] nextLongArray(int n) { long[] res = new long[n]; for (int i = 0; i < n; i++) { res[i] = nextLong(); } return res; } public long[] nextLongArrayDec(int n) { long[] res = new long[n]; for (int i = 0; i < n; i++) { res[i] = nextLong() - 1; } return res; } public InputReader(InputStream inputStream) { in = new BufferedReader(new InputStreamReader(inputStream)); tok = new StringTokenizer(""); } } }
Submission Info
Submission Time | |
---|---|
Task | E - Line up! |
User | tutuz |
Language | Java8 (OpenJDK 1.8.0) |
Score | 0 |
Code Size | 3859 Byte |
Status | RE |
Exec Time | 346 ms |
Memory | 63992 KB |
Judge Result
Set Name | Sample | Subtask1 | All | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 30 | 0 / 70 | ||||||||||||
Status |
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Set Name | Test Cases |
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Sample | subtask0_sample_01.txt, subtask0_sample_02.txt |
Subtask1 | subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt, subtask1_20.txt, subtask1_21.txt, subtask1_22.txt, subtask1_23.txt, subtask0_sample_01.txt, subtask0_sample_02.txt |
All | subtask0_sample_01.txt, subtask0_sample_02.txt, subtask1_01.txt, subtask1_02.txt, subtask1_03.txt, subtask1_04.txt, subtask1_05.txt, subtask1_06.txt, subtask1_07.txt, subtask1_08.txt, subtask1_09.txt, subtask1_10.txt, subtask1_11.txt, subtask1_12.txt, subtask1_13.txt, subtask1_14.txt, subtask1_15.txt, subtask1_16.txt, subtask1_17.txt, subtask1_18.txt, subtask1_19.txt, subtask1_20.txt, subtask1_21.txt, subtask1_22.txt, subtask1_23.txt, subtask2_01.txt, subtask2_02.txt, subtask2_03.txt, subtask2_04.txt, subtask2_05.txt, subtask2_06.txt, subtask2_07.txt, subtask2_08.txt, subtask2_09.txt, subtask2_10.txt, subtask2_11.txt, subtask2_12.txt, subtask2_13.txt, subtask2_14.txt, subtask2_15.txt, subtask2_16.txt, subtask2_17.txt, subtask2_18.txt, subtask2_19.txt, subtask2_20.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
subtask0_sample_01.txt | RE | 172 ms | 42732 KB |
subtask0_sample_02.txt | AC | 151 ms | 26324 KB |
subtask1_01.txt | RE | 191 ms | 45140 KB |
subtask1_02.txt | RE | 189 ms | 39276 KB |
subtask1_03.txt | RE | 191 ms | 43604 KB |
subtask1_04.txt | AC | 161 ms | 24532 KB |
subtask1_05.txt | RE | 174 ms | 41576 KB |
subtask1_06.txt | RE | 171 ms | 44244 KB |
subtask1_07.txt | RE | 170 ms | 47188 KB |
subtask1_08.txt | AC | 165 ms | 23888 KB |
subtask1_09.txt | AC | 165 ms | 23892 KB |
subtask1_10.txt | AC | 161 ms | 23764 KB |
subtask1_11.txt | AC | 177 ms | 24020 KB |
subtask1_12.txt | AC | 171 ms | 25940 KB |
subtask1_13.txt | AC | 167 ms | 26452 KB |
subtask1_14.txt | RE | 182 ms | 42348 KB |
subtask1_15.txt | RE | 194 ms | 41300 KB |
subtask1_16.txt | RE | 180 ms | 43116 KB |
subtask1_17.txt | RE | 192 ms | 38892 KB |
subtask1_18.txt | RE | 188 ms | 40264 KB |
subtask1_19.txt | RE | 180 ms | 42196 KB |
subtask1_20.txt | RE | 187 ms | 38252 KB |
subtask1_21.txt | RE | 178 ms | 41296 KB |
subtask1_22.txt | RE | 182 ms | 45396 KB |
subtask1_23.txt | RE | 190 ms | 42708 KB |
subtask2_01.txt | AC | 273 ms | 46016 KB |
subtask2_02.txt | RE | 314 ms | 59776 KB |
subtask2_03.txt | RE | 302 ms | 59716 KB |
subtask2_04.txt | AC | 242 ms | 34256 KB |
subtask2_05.txt | AC | 286 ms | 46292 KB |
subtask2_06.txt | AC | 289 ms | 44720 KB |
subtask2_07.txt | AC | 277 ms | 46220 KB |
subtask2_08.txt | AC | 283 ms | 44812 KB |
subtask2_09.txt | AC | 277 ms | 44604 KB |
subtask2_10.txt | AC | 297 ms | 45056 KB |
subtask2_11.txt | RE | 323 ms | 63992 KB |
subtask2_12.txt | RE | 334 ms | 58496 KB |
subtask2_13.txt | RE | 321 ms | 58804 KB |
subtask2_14.txt | RE | 316 ms | 60676 KB |
subtask2_15.txt | RE | 346 ms | 55044 KB |
subtask2_16.txt | RE | 310 ms | 57608 KB |
subtask2_17.txt | RE | 319 ms | 62132 KB |
subtask2_18.txt | RE | 316 ms | 58092 KB |
subtask2_19.txt | RE | 320 ms | 61352 KB |
subtask2_20.txt | RE | 333 ms | 55932 KB |