Submission #1517899
Source Code Expand
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
#define fi first
#define se second
template<typename A, typename B> inline bool chmax(A &a, B b) { if (a<b) { a=b; return 1; } return 0; }
template<typename A, typename B> inline bool chmin(A &a, B b) { if (a>b) { a=b; return 1; } return 0; }
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<int, pii> pip;
const ll INF = 1ll<<29;
const ll MOD = 1000000007;
const double EPS = 1e-10;
const bool debug = 1;
//----------------------//
int N;
int a[112345];
int main() {
cin >> N;
REP(i, N) scanf("%d", a + i);
int x = 0;
REP(i, N) x ^= a[i];
int cnt[32] = {};
REP(i, N) {
FOR(j, 1, 32) {
if ((a[i] >> j & 1) && (a[i] & ((1ll<<j)-1)) == 0) cnt[j]++;
}
if (a[i] & 1) cnt[0]++;
}
int ans = 0;
for (int i = 31; i >= 0; i--) if (x >> i & 1) {
if (cnt[i] == 0) { ans = -1; break; }
x ^= (1ll<<(i+1))-1;
ans++;;
}
cout << ans << endl;
return 0;
}
Submission Info
Submission Time
2017-08-17 22:45:08+0900
Task
C - Cheating Nim
User
tkmst201
Language
C++14 (GCC 5.4.1)
Score
500
Code Size
1121 Byte
Status
AC
Exec Time
22 ms
Memory
640 KB
Compile Error
./Main.cpp: In function ‘int main()’:
./Main.cpp:25:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
REP(i, N) scanf("%d", a + i);
^
Judge Result
Set Name
Sample
All
Score / Max Score
0 / 0
500 / 500
Status
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
256 KB
001.txt
AC
1 ms
256 KB
002.txt
AC
18 ms
640 KB
003.txt
AC
11 ms
512 KB
004.txt
AC
11 ms
384 KB
005.txt
AC
9 ms
384 KB
006.txt
AC
22 ms
640 KB
007.txt
AC
22 ms
640 KB
008.txt
AC
22 ms
640 KB
009.txt
AC
22 ms
640 KB
010.txt
AC
22 ms
640 KB
011.txt
AC
22 ms
640 KB
012.txt
AC
22 ms
640 KB
013.txt
AC
22 ms
640 KB
014.txt
AC
22 ms
640 KB
015.txt
AC
22 ms
640 KB
016.txt
AC
22 ms
640 KB
017.txt
AC
22 ms
640 KB
018.txt
AC
22 ms
640 KB
019.txt
AC
22 ms
640 KB
020.txt
AC
22 ms
640 KB
021.txt
AC
3 ms
256 KB
022.txt
AC
3 ms
256 KB
023.txt
AC
19 ms
640 KB
example0.txt
AC
1 ms
256 KB
example1.txt
AC
1 ms
256 KB