Submission #125624

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
125624	2019-07-06 05:34:04	gs14004	Snake Escaping (JOI18_snake_escaping)	C++17	100 / 100	1169 ms	43256 KiB

snake_escaping

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#include <bits/stdc++.h>
using namespace std;
typedef long long lint;
typedef pair<lint, lint> pi;
const int MAXN = (1<<20) + 5;
int n, q;
int cnt1[MAXN];
int cnt2[MAXN];
int pcnt[MAXN];
char str[MAXN];
char buf[25];
int main(){
  scanf("%d %d",&n,&q);
  scanf("%s", str);
  for(int i=0; i<(1<<n); i++){
    if(i) pcnt[i] = pcnt[i-(i&-i)] + 1;
    cnt1[i ^ ((1<<n) - 1)] += str[i] - '0';
    cnt2[i] += str[i] - '0';
  }
  for(int i=0; i<n; i++){
    for(int j=0; j<(1<<n); j++){
      if((j >> i) % 2 == 0){
        cnt1[j] += cnt1[j | (1<<i)];
        cnt2[j] += cnt2[j | (1<<i)];
      }
    }
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&q);
  ~~~~~^~~~~~~~~~~~~~~
snake_escaping.cpp:17:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%s", str);
  ~~~~~^~~~~~~~~~~
snake_escaping.cpp:32:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%s", buf);
   ~~~~~^~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 10 / 10
• Subtask 4: 53 / 53
• Subtask 5: 25 / 25