Submission #3920055
Source Code Expand
#include <bits/stdc++.h>
using namespace std;
#define NDEBUG
#include <cassert>
typedef long long ll;
typedef long double Double;
typedef unsigned long long ull;
typedef pair<int,int> ii;
typedef pair<ll,ll> llll;
typedef pair<double,double> dd;
typedef vector<int> vi;
typedef vector<vector<int>> vvi;
typedef vector<ii> vii;
typedef vector<vector<ii>> vvii;
typedef vector<ll> vll;
typedef vector<vector<ll>> vvll;
typedef vector<llll> vllll;
typedef vector<bool> vb;
typedef vector<string> vs;
typedef vector<double> vd;
typedef vector<long double> vD;
#define sz(a) int((a).size())
#define pb push_back
#define eb emplace_back
#define FOR(var,from,to) for(int var=(from);var<=(to);++var)
#define rep(var,n) for(int var=0;var<(n);++var)
#define rep1(var,n) for(int var=1;var<=(n);++var)
#define repC2(vari,varj,n) for(int vari=0;vari<(n)-1;++vari)for(int varj=vari+1;varj<(n);++varj)
#define repC3(vari,varj,vark,n) for(int vari=0;vari<(n)-2;++vari)for(int varj=vari+1;varj<(n)-1;++varj)for(int vark=varj+1;vark<(n);++vark)
#define ALL(c) (c).begin(),(c).end()
#define RALL(c) (c).rbegin(),(c).rend()
#define tr(i,c) for(auto i=(c).begin(); i!=(c).end(); ++i)
#define found(s,e) ((s).find(e)!=(s).end())
#define mset(arr,val) memset(arr,val,sizeof(arr))
#define mid(x,y) ((x)+((y)-(x))/2)
#define IN(x,a,b) ((a)<=(x)&&(x)<=(b))
#define cons make_pair
int solve(int N, vi& a) {
int ax = 0;
vi mv(32, 0);
rep(i,N) {
ax ^= a[i];
int x = a[i] ^ (a[i] - 1);
int popcnt = __builtin_popcount(x);
mv[popcnt - 1] = x;
}
if (ax == 0) return 0;
int n = 32 - __builtin_clz(ax), cnt = 0;
for (int i=n-1; i>=0; --i) {
if (ax & (1 << i)) {
if (!mv[i]) return -1;
ax ^= mv[i];
++cnt;
} else {
continue;
}
}
return cnt;
}
int main() {
int N; scanf("%d", &N);
vi a(N);
rep(i,N) scanf("%d", &a[i]);
cout << solve(N,a) << endl;
return 0;
}
Submission Info
Submission Time
2019-01-03 12:45:34+0900
Task
C - Cheating Nim
User
naoya_t
Language
C++14 (GCC 5.4.1)
Score
500
Code Size
2079 Byte
Status
AC
Exec Time
14 ms
Memory
640 KB
Compile Error
./Main.cpp: In function ‘int main()’:
./Main.cpp:70:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
int N; scanf("%d", &N);
^
./Main.cpp:72:32: 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
14 ms
640 KB
003.txt
AC
7 ms
512 KB
004.txt
AC
6 ms
384 KB
005.txt
AC
5 ms
384 KB
006.txt
AC
14 ms
640 KB
007.txt
AC
13 ms
640 KB
008.txt
AC
13 ms
640 KB
009.txt
AC
13 ms
640 KB
010.txt
AC
13 ms
640 KB
011.txt
AC
13 ms
640 KB
012.txt
AC
13 ms
640 KB
013.txt
AC
13 ms
640 KB
014.txt
AC
13 ms
640 KB
015.txt
AC
13 ms
640 KB
016.txt
AC
13 ms
640 KB
017.txt
AC
13 ms
640 KB
018.txt
AC
13 ms
640 KB
019.txt
AC
13 ms
640 KB
020.txt
AC
14 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