Submission #251466

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
251466	2020-07-21 10:20:49	Bruteforceman	Trobojnica (COCI19_trobojnica)	C++11	110 / 110	197 ms	16248 KiB

trobojnica

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#include <bits/stdc++.h>
using namespace std;
const int maxn = 2e5 + 10;
#define endl '\n'
int suc[maxn];
int pre[maxn];
int succol[maxn], precol[maxn];
char a[maxn];
int main() {
  int n;
  scanf("%d", &n);
  scanf("%s", a);
  int freq[] = {0, 0, 0, 0};
  set <int> s[4][4];
  for(int i = 0; i < n; i++) {
    pre[i] = (n + i - 1) % n;
    suc[i] = (i + 1) % n;
    freq[a[i] - '0'] += 1;
    precol[i] = a[pre[i]] - '0';
    succol[i] = a[i] - '0';
    s[precol[i]][succol[i]].insert(i);
  }
  if(freq[1] == n || freq[2] == n || freq[3] == n) {
    puts("NE");
    exit(0);
  }
  if(abs(freq[1] - freq[2]) % 2 == 1 || abs(freq[2] - freq[3]) % 2 == 1) {
    puts("NE");
    exit(0);
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

trobojnica.cpp: In function 'int main()':
trobojnica.cpp:32:7: warning: unused variable 'cur' [-Wunused-variable]
   int cur = 0;
       ^~~
trobojnica.cpp:11:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~
trobojnica.cpp:12:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", a);
   ~~~~~^~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 40 / 40
• Subtask 3: 50 / 50