Submission #1092650

#	Time	Username	Problem	Language	Result	Execution time	Memory
1092650		SulA	Coins (IOI17_coins)	C++17	Compilation error	0 ms	0 KiB

coins

#include <bits/stdc++.h>
using namespace std;

int* coin_flips(int* b, int c) {
    for (int i = 0; i < 64; i++) if (b[i]) c ^= i;
    int a[1] = { c };
    return a;
}

int find_coin(int[] b) {
    int c = 0;
    for (int i = 0; i < 64; i++) if (b[i]) c ^= i;
    return c;
}

Compilation message (stderr)

coins.cpp: In function 'int* coin_flips(int*, int)':
coins.cpp:7:12: warning: address of local variable 'a' returned [-Wreturn-local-addr]
    7 |     return a;
      |            ^
coins.cpp:6:9: note: declared here
    6 |     int a[1] = { c };
      |         ^
coins.cpp: At global scope:
coins.cpp:10:21: error: expected ',' or '...' before 'b'
   10 | int find_coin(int[] b) {
      |                     ^
coins.cpp: In function 'int find_coin(int*)':
coins.cpp:12:38: error: 'b' was not declared in this scope
   12 |     for (int i = 0; i < 64; i++) if (b[i]) c ^= i;
      |                                      ^