Submission #723315

#	Time	Username	Problem	Language	Result	Execution time	Memory
723315		Marduk	A Difficult(y) Choice (BOI21_books)	C++14	Compilation error	0 ms	0 KiB

books

void solve(int N, int K, long long A, int S){
    vector<int> sol;

    int lo = 0, hi = N+1;
    while(hi-lo>1){
        int mid = (lo+hi)/2;

        if(skim(mid) >= A) hi = mid;
        else lo = mid;
    }

    int x = hi;
    int vx = skim(i);

    long long ans = 0;
    vector<int> f,l;
    f.clear(); l.clear();

    for(int i = 1;i<K;i++){
        long long q = skim(i);
        ans+=q; f.push_back(q);

        q = skim(x-i);
        l.push_back(q);
    }

    if(ans+vx >= A && ans+vx <= 2*A){
        for(int i = 1;i<K;i++) sol.push_back(i);
        sol.push_back(x);
        return sol;
    }

    if(K>=x) impossible();

    f.push_back(skim(K));
    ans+=f[K-1];

    if(ans >= A && ans <= 2*A){
        for(int i = 1;i<=K;i++) sol.push_back(i);
        return sol;
    }

    for(int i = 0;i<K;i++){
        if(f[i] == l[i]) impossible();
        ans-=f[i]; ans+=l[i];

        if(ans >= A && ans <= 2*A){
            for(int j = 1+i+1;j<=K;j++) sol.push_back(j);
            for(int j = x-1;j>=x-1-i;j--) sol.push_back(j);
            return sol;
        }
    }
    impossible();
}

Compilation message (stderr)

books.cpp: In function 'void solve(int, int, long long int, int)':
books.cpp:3:5: error: 'vector' was not declared in this scope
    3 |     vector<int> sol;
      |     ^~~~~~
books.cpp:3:12: error: expected primary-expression before 'int'
    3 |     vector<int> sol;
      |            ^~~
books.cpp:9:12: error: 'skim' was not declared in this scope
    9 |         if(skim(mid) >= A) hi = mid;
      |            ^~~~
books.cpp:14:19: error: 'i' was not declared in this scope
   14 |     int vx = skim(i);
      |                   ^
books.cpp:14:14: error: 'skim' was not declared in this scope
   14 |     int vx = skim(i);
      |              ^~~~
books.cpp:17:12: error: expected primary-expression before 'int'
   17 |     vector<int> f,l;
      |            ^~~
books.cpp:18:5: error: 'f' was not declared in this scope
   18 |     f.clear(); l.clear();
      |     ^
books.cpp:18:16: error: 'l' was not declared in this scope
   18 |     f.clear(); l.clear();
      |                ^
books.cpp:29:32: error: 'sol' was not declared in this scope
   29 |         for(int i = 1;i<K;i++) sol.push_back(i);
      |                                ^~~
books.cpp:30:9: error: 'sol' was not declared in this scope
   30 |         sol.push_back(x);
      |         ^~~
books.cpp:31:16: error: return-statement with a value, in function returning 'void' [-fpermissive]
   31 |         return sol;
      |                ^~~
books.cpp:34:14: error: 'impossible' was not declared in this scope
   34 |     if(K>=x) impossible();
      |              ^~~~~~~~~~
books.cpp:40:33: error: 'sol' was not declared in this scope
   40 |         for(int i = 1;i<=K;i++) sol.push_back(i);
      |                                 ^~~
books.cpp:41:16: error: 'sol' was not declared in this scope
   41 |         return sol;
      |                ^~~
books.cpp:45:26: error: 'impossible' was not declared in this scope
   45 |         if(f[i] == l[i]) impossible();
      |                          ^~~~~~~~~~
books.cpp:49:41: error: 'sol' was not declared in this scope
   49 |             for(int j = 1+i+1;j<=K;j++) sol.push_back(j);
      |                                         ^~~
books.cpp:50:43: error: 'sol' was not declared in this scope
   50 |             for(int j = x-1;j>=x-1-i;j--) sol.push_back(j);
      |                                           ^~~
books.cpp:51:20: error: 'sol' was not declared in this scope
   51 |             return sol;
      |                    ^~~
books.cpp:54:5: error: 'impossible' was not declared in this scope
   54 |     impossible();
      |     ^~~~~~~~~~