Submission #2801031
Source Code Expand
#include <bits/stdc++.h> using namespace std; const int MAXN = 1e5; const int INF = 1e9; int N; int A[MAXN + 10]; void done(int xr) { printf("%d\n", xr); exit(0); } int lg(int x) { int cc = 0; while(x > 1) { x >>= 1; cc++; } return cc; } bool cnt[40]; int main() { scanf("%d", &N); for(int i = 0; i < N; i++) { scanf("%d", &A[i]); if((A[i] & (A[i] - 1)) == 0) cnt[lg(A[i])] = true; } int xr = 0; for(int i = 0; i < N; i++) { xr ^= A[i]; } int res = 0; for(int i = 30-1; i > 0; i--) { if(xr & (1 << i)) { if(!cnt[i]) continue; xr ^= 1 << i; xr ^= (1 << i) - 1; res++; } } int cc = N; for(int i = 0; i < N; i++) { if((A[i] & (A[i] - 1)) == 0) cc--; } if(xr == 0) printf("%d\n", res); else if(xr == 1 && cc > 0) printf("%d\n", res+1); else printf("-1\n"); }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | ruhanhabib39 |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 960 Byte |
Status | WA |
Exec Time | 14 ms |
Memory | 640 KB |
Compile Error
./Main.cpp: In function ‘int main()’: ./Main.cpp:27:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &N); ^ ./Main.cpp:29:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &A[i]); ^
Judge Result
Set Name | Sample | All | ||||||
---|---|---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 500 | ||||||
Status |
|
|
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 | AC | 1 ms | 256 KB |
001.txt | AC | 2 ms | 384 KB |
002.txt | AC | 13 ms | 640 KB |
003.txt | AC | 6 ms | 512 KB |
004.txt | AC | 6 ms | 384 KB |
005.txt | AC | 5 ms | 384 KB |
006.txt | WA | 13 ms | 640 KB |
007.txt | WA | 13 ms | 640 KB |
008.txt | WA | 13 ms | 640 KB |
009.txt | WA | 13 ms | 640 KB |
010.txt | WA | 13 ms | 640 KB |
011.txt | WA | 13 ms | 640 KB |
012.txt | WA | 13 ms | 640 KB |
013.txt | WA | 13 ms | 640 KB |
014.txt | WA | 14 ms | 640 KB |
015.txt | WA | 13 ms | 640 KB |
016.txt | AC | 13 ms | 640 KB |
017.txt | AC | 13 ms | 640 KB |
018.txt | WA | 13 ms | 640 KB |
019.txt | WA | 13 ms | 640 KB |
020.txt | AC | 13 ms | 640 KB |
021.txt | AC | 2 ms | 256 KB |
022.txt | AC | 2 ms | 256 KB |
023.txt | AC | 13 ms | 640 KB |
example0.txt | AC | 1 ms | 256 KB |
example1.txt | AC | 1 ms | 256 KB |