Submission #2454302
Source Code Expand
#include <bits/stdc++.h> using namespace std; int N; int sum; int as[114514]; int ans = 0; map<int, int> cnt; int main() { scanf("%d", &N); for (int i=0; i<N; i++) { scanf("%d", &as[i]); sum ^= as[i]; cnt[as[i]]++; } for (int i=30; i>=0; i--) { if (sum >> i & 1) { if (!cnt.count(1 << i)) { puts("-1"); return 0; } int t = 1 << i; sum ^= t; --t; sum ^= t; cnt[t]++; ans++; } } if (sum == 0) { printf("%d\n", ans); } else puts("-1"); }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | potetisensei |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 579 Byte |
Status | WA |
Exec Time | 37 ms |
Memory | 3584 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:11:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ ./Main.cpp:13:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &as[i]); ^
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 500 | ||||||
Status |
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|
Set Name | Test Cases |
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Sample | example0.txt, example1.txt |
All | 000.txt, 001.txt, 002.txt, 003.txt, 004.txt, 005.txt, 006.txt, 007.txt, 008.txt, 009.txt, 010.txt, 011.txt, 012.txt, 013.txt, 014.txt, 015.txt, 016.txt, 017.txt, 018.txt, 019.txt, 020.txt, 021.txt, 022.txt, 023.txt, example0.txt, example1.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
000.txt | WA | 1 ms | 256 KB |
001.txt | AC | 1 ms | 256 KB |
002.txt | AC | 13 ms | 640 KB |
003.txt | AC | 10 ms | 512 KB |
004.txt | AC | 20 ms | 2560 KB |
005.txt | AC | 13 ms | 1792 KB |
006.txt | WA | 36 ms | 3328 KB |
007.txt | WA | 36 ms | 3328 KB |
008.txt | WA | 36 ms | 3328 KB |
009.txt | WA | 36 ms | 3328 KB |
010.txt | WA | 36 ms | 3328 KB |
011.txt | WA | 36 ms | 3328 KB |
012.txt | WA | 36 ms | 3328 KB |
013.txt | WA | 36 ms | 3328 KB |
014.txt | WA | 36 ms | 3328 KB |
015.txt | WA | 36 ms | 3328 KB |
016.txt | AC | 36 ms | 3328 KB |
017.txt | AC | 36 ms | 3328 KB |
018.txt | WA | 37 ms | 3584 KB |
019.txt | WA | 36 ms | 3328 KB |
020.txt | AC | 36 ms | 3328 KB |
021.txt | AC | 4 ms | 640 KB |
022.txt | AC | 4 ms | 512 KB |
023.txt | AC | 16 ms | 640 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |