Submission #1000885


Source Code Expand

#include <cstdio>
#include <cmath>

#include <algorithm>

typedef long long   signed int LL;
typedef long long unsigned int LU;

#define incID(i, l, r) for(int i = (l)    ; i <  (r); i++)
#define incII(i, l, r) for(int i = (l)    ; i <= (r); i++)
#define decID(i, l, r) for(int i = (r) - 1; i >= (l); i--)
#define decII(i, l, r) for(int i = (r)    ; i >= (l); i--)
#define inc( i, n) incID(i, 0, n)
#define inc1(i, n) incII(i, 1, n)
#define dec( i, n) decID(i, 0, n)
#define dec1(i, n) decII(i, 1, n)

#define inII(v, l, r) ((l) <= (v) && (v) <= (r))
#define inID(v, l, r) ((l) <= (v) && (v) <  (r))

template<typename T> void swap(T & x, T & y) { T t = x; x = y; y = t; return; }
template<typename T> T abs(T x) { return (0 <= x ? x : -x); }
template<typename T> T max(T a, T b) { return (b <= a ? a : b); }
template<typename T> T min(T a, T b) { return (a <= b ? a : b); }
template<typename T> bool setmin(T & a, T b) { if(a <= b) { return false; } else { a = b; return true; } }
template<typename T> bool setmax(T & a, T b) { if(b <= a) { return false; } else { a = b; return true; } }
template<typename T> T gcd(T a, T b) { return (b == 0 ? a : gcd(b, a % b)); }
template<typename T> T lcm(T a, T b) { return a / gcd(a, b) * b; }

// ---- ----

int n, a[100000];

int solve() {
	int eor = 0;
	inc(i, n) { eor ^= a[i]; }
	
	decID(i, 1, 30) {
		if(eor & (1 << i)) { eor ^= (1 << i) - 1; }
	}
	
	int ans = 0;
	inc(i, 30) { if(eor & (1 << i)) {
		bool f2 = false;
		inc(j, n) {
			if(a[j] % (1 << i) == 0 && a[j] % (1 << (i + 1)) != 0) { f2 = true; break; }
		}
		if(f2) { ans++; } else { return -1; }
	} }
	
	return ans;
}

int main() {
	scanf("%d", &n);
	inc(i, n) { scanf("%d", &a[i]); }
	
	printf("%d\n", solve());
	
	return 0;
}

Submission Info

Submission Time
Task C - Cheating Nim
User FF256grhy
Language C++14 (GCC 5.4.1)
Score 500
Code Size 1795 Byte
Status AC
Exec Time 14 ms
Memory 512 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:55:17: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d", &n);
                 ^
./Main.cpp:56:32: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  inc(i, n) { scanf("%d", &a[i]); }
                                ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 500 / 500
Status
AC × 2
AC × 26
Set Name Test Cases
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 128 KB
001.txt AC 1 ms 128 KB
002.txt AC 14 ms 512 KB
003.txt AC 7 ms 384 KB
004.txt AC 6 ms 384 KB
005.txt AC 5 ms 256 KB
006.txt AC 13 ms 512 KB
007.txt AC 13 ms 512 KB
008.txt AC 13 ms 512 KB
009.txt AC 13 ms 512 KB
010.txt AC 13 ms 512 KB
011.txt AC 13 ms 512 KB
012.txt AC 13 ms 512 KB
013.txt AC 13 ms 512 KB
014.txt AC 13 ms 512 KB
015.txt AC 13 ms 512 KB
016.txt AC 14 ms 512 KB
017.txt AC 14 ms 512 KB
018.txt AC 13 ms 512 KB
019.txt AC 13 ms 512 KB
020.txt AC 14 ms 512 KB
021.txt AC 3 ms 256 KB
022.txt AC 3 ms 256 KB
023.txt AC 13 ms 512 KB
example0.txt AC 1 ms 128 KB
example1.txt AC 1 ms 128 KB