Submission #147254

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
147254	2019-08-28 14:00:11	ipaljak	Lun (COCI19_lun)	C++14	50 / 50	3 ms	376 KiB

lun

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#include <bits/stdc++.h>
using namespace std;
#define TRACE(x) cerr << #x << " " << x << endl
#define FOR(i, a, b) for (int i = (a); i < int(b); ++i)
#define REP(i, n) FOR(i, 0, n)
#define _ << " " <<
typedef long long llint;
const int MOD = 1e9 + 7;
const int MAXN = 105;
int n;
char s[MAXN];
bool check(int x) {
  int sum = 0;
  for (int i = 1; i < n; ++i) {
    int d = (s[n - i - 1] - '0');
    if (s[n - i - 1] == 'x') d = x;
    if (i % 2 == 1) d *= 2;
    if (d >= 10) d = 1 + (d % 10);
    sum += d;
  }
  sum *= 9; sum %= 10;
  int val = s[n - 1] - '0';
  if (s[n - 1] == 'x') val = x;
  return sum == val;
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

lun.cpp: In function 'int main()':
lun.cpp:34:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~
lun.cpp:35:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", s);
   ~~~~~^~~~~~~~~

• Subtask 1: 50 / 50