Submission #2708208
Source Code Expand
int check[30]; int c, n, a; int main() { n = 0; while (1) { c = getchar_unlocked(); if ('0' <= c && c <= '9') n = n * 10 + c - '0'; else break; } int xor_sum = 0; for (int i = 0; i < n; i++) { a = 0; while (1) { c = getchar_unlocked(); if ('0' <= c && c <= '9') a = a * 10 + c - '0'; else break; } xor_sum ^= a; a = a ^ (a - 1); check[__builtin_popcount(a) - 1] = 1; // switch (a) { // case 1073741823: // check[29] = 1; // break; // case 536870911: // check[28] = 1; // break; // case 268435455: // check[27] = 1; // break; // case 134217727: // check[26] = 1; // break; // case 67108863: // check[25] = 1; // break; // case 33554431: // check[24] = 1; // break; // case 16777215: // check[23] = 1; // break; // case 8388607: // check[22] = 1; // break; // case 4194303: // check[21] = 1; // break; // case 2097151: // check[20] = 1; // break; // case 1048575: // check[19] = 1; // break; // case 524287: // check[18] = 1; // break; // case 262143: // check[17] = 1; // break; // case 131071: // check[16] = 1; // break; // case 65535: // check[15] = 1; // break; // case 32767: // check[14] = 1; // break; // case 16383: // check[13] = 1; // break; // case 8191: // check[12] = 1; // break; // case 4095: // check[11] = 1; // break; // case 2047: // check[10] = 1; // break; // case 1023: // check[9] = 1; // break; // case 511: // check[8] = 1; // break; // case 255: // check[7] = 1; // break; // case 127: // check[6] = 1; // break; // case 63: // check[5] = 1; // break; // case 31: // check[4] = 1; // break; // case 15: // check[3] = 1; // break; // case 7: // check[2] = 1; // break; // case 3: // check[1] = 1; // break; // case 1: // check[0] = 1; // break; // } } int ans = 0; for (int bit = 29; bit >= 0; bit--) { if (((1 << bit) & xor_sum) == 0) { continue; } int x = (1 << (bit + 1)) - 1; if (check[bit] > 0) { xor_sum ^= x; ans += 1; } } if (xor_sum != 0) { printf("-1\n"); } else { printf("%d\n", ans); } }
Submission Info
Submission Time | |
---|---|
Task | C - Cheating Nim |
User | kenkoooo |
Language | C (GCC 5.4.1) |
Score | 500 |
Code Size | 2712 Byte |
Status | AC |
Exec Time | 5 ms |
Memory | 128 KB |
Compile Error
./Main.c: In function ‘main’: ./Main.c:8:9: warning: implicit declaration of function ‘getchar_unlocked’ [-Wimplicit-function-declaration] c = getchar_unlocked(); ^ ./Main.c:138:5: warning: implicit declaration of function ‘printf’ [-Wimplicit-function-declaration] printf("-1\n"); ^ ./Main.c:138:5: warning: incompatible implicit declaration of built-in function ‘printf’ ./Main.c:138:5: note: include ‘<stdio.h>’ or provide a declaration of ‘printf’ ./Main.c:140:5: warning: incompatible implicit declaration of built-in function ‘printf’ printf("%d\n", ans); ^ ./Main.c:140:5: note: include ‘<stdio.h>’ or provide a declaration of ‘printf’
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 | 0 ms | 128 KB |
001.txt | AC | 0 ms | 128 KB |
002.txt | AC | 4 ms | 128 KB |
003.txt | AC | 1 ms | 128 KB |
004.txt | AC | 2 ms | 128 KB |
005.txt | AC | 2 ms | 128 KB |
006.txt | AC | 4 ms | 128 KB |
007.txt | AC | 4 ms | 128 KB |
008.txt | AC | 4 ms | 128 KB |
009.txt | AC | 4 ms | 128 KB |
010.txt | AC | 4 ms | 128 KB |
011.txt | AC | 4 ms | 128 KB |
012.txt | AC | 4 ms | 128 KB |
013.txt | AC | 4 ms | 128 KB |
014.txt | AC | 4 ms | 128 KB |
015.txt | AC | 5 ms | 128 KB |
016.txt | AC | 4 ms | 128 KB |
017.txt | AC | 4 ms | 128 KB |
018.txt | AC | 4 ms | 128 KB |
019.txt | AC | 4 ms | 128 KB |
020.txt | AC | 4 ms | 128 KB |
021.txt | AC | 1 ms | 128 KB |
022.txt | AC | 1 ms | 128 KB |
023.txt | AC | 4 ms | 128 KB |
example0.txt | AC | 0 ms | 128 KB |
example1.txt | AC | 0 ms | 128 KB |