Submission #1000728
Source Code Expand
#ifdef DEBUG #define _GLIBCXX_DEBUG #endif #include <bits/stdc++.h> using namespace std; typedef long double ld; typedef long long ll; #ifdef DEBUG #define eprintf(...) fprintf(stderr, __VA_ARGS__), fflush(stderr) #else #define eprintf(...) ; #endif #define pb push_back #define mp make_pair #define sz(x) ((int) (x).size()) #define TASK "text" const int inf = (int) 1.01e9; const ld eps = 1e-9; const ld pi = acos((ld) -1); mt19937 mrand(random_device{} ()); int rnd(int x) { return mrand() % x; } void precalc() { } const int maxn = (int) 1e5 + 5; int n; int a[maxn]; int read() { if (scanf("%d", &n) < 1) { return false; } for (int i = 0; i < n; i++) { scanf("%d", &a[i]); } return true; } const int logx = 30; int have[logx]; void solve() { int x = 0; for (int i = 0; i < logx; i++) { have[i] = 0; } for (int i = 0; i < n; i++) { x ^= a[i]; int bit = 0; while (!(a[i] & (1 << bit))) { bit++; } have[bit] = 1; } int cur = 0; int res = 0; for (int i = logx - 1; i >= 0; i--) { if (((x >> i) & 1) != cur) { if (!have[i]) { printf("-1\n"); return; } res++; cur ^= 1; } } printf("%d\n", res); } int main() { precalc(); #ifdef LOCAL assert(freopen(TASK ".in", "r", stdin)); assert(freopen(TASK ".out", "w", stdout)); #endif while (true) { if (!read()) { break; } solve(); #ifdef DEBUG eprintf("Time %.2f\n", (double) clock() / CLOCKS_PER_SEC); #endif } return 0; }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | aid |
Language | C++14 (GCC 5.4.1) |
Score | 500 |
Code Size | 1627 Byte |
Status | AC |
Exec Time | 16 ms |
Memory | 640 KB |
Compile Error
./Main.cpp: In function ‘int read()’: ./Main.cpp:45:23: 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 | 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 | 3 ms | 256 KB |
001.txt | AC | 3 ms | 256 KB |
002.txt | AC | 15 ms | 640 KB |
003.txt | AC | 8 ms | 512 KB |
004.txt | AC | 8 ms | 384 KB |
005.txt | AC | 6 ms | 384 KB |
006.txt | AC | 16 ms | 640 KB |
007.txt | AC | 16 ms | 640 KB |
008.txt | AC | 16 ms | 640 KB |
009.txt | AC | 16 ms | 640 KB |
010.txt | AC | 16 ms | 640 KB |
011.txt | AC | 16 ms | 640 KB |
012.txt | AC | 16 ms | 640 KB |
013.txt | AC | 16 ms | 640 KB |
014.txt | AC | 16 ms | 640 KB |
015.txt | AC | 16 ms | 640 KB |
016.txt | AC | 16 ms | 640 KB |
017.txt | AC | 16 ms | 640 KB |
018.txt | AC | 16 ms | 640 KB |
019.txt | AC | 16 ms | 640 KB |
020.txt | AC | 16 ms | 640 KB |
021.txt | AC | 4 ms | 256 KB |
022.txt | AC | 4 ms | 256 KB |
023.txt | AC | 16 ms | 640 KB |
example0.txt | AC | 3 ms | 256 KB |
example1.txt | AC | 3 ms | 384 KB |