Submission #199752

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
199752	2020-02-03 07:14:36	Mercenary	Snake Escaping (JOI18_snake_escaping)	C++14	75 / 100	2081 ms	19028 KiB

snake_escaping

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#include<bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define taskname "A"
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int,int> ii;
const int maxn = (1 << 20);
string s;
int n , q;
int dp[2][maxn];
int res , f , nf , tmp;
int cnt[3] , a[maxn];
int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    if(fopen(taskname".INP","r")){
    freopen(taskname".INP", "r",stdin);
    freopen(taskname".OUT", "w",stdout);
    }
    cin >> n >> q >> s;
    for(int i = 0 ; i < (1 << n) ; ++i){
        dp[0][i] = dp[1][(1 << n) - 1 - i] = a[i] = s[i] - '0';
    }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

snake_escaping.cpp: In function 'int main()':
snake_escaping.cpp:44:21: warning: array subscript has type 'char' [-Wchar-subscripts]
             cnt[s[i]] |= (1 << (n - i - 1));
                     ^
snake_escaping.cpp:24:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".INP", "r",stdin);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~
snake_escaping.cpp:25:10: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
   freopen(taskname".OUT", "w",stdout);
   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 7 / 7
• Subtask 3: 10 / 10
• Subtask 4: 53 / 53
• Subtask 5: 0 / 25