oj.uz

Submission #865702

# Submission time Handle Problem Language Result Execution time Memory
865702 2023-10-24T14:21:25 Z jk410 Jousting tournament (IOI12_tournament) C++17
49 / 100
 1000 ms 1996 KB 
using namespace std;
int N;
int Tree[1<<18];
int A[100000];
int init(int l,int r,int n){
    if (l==r)
        return Tree[n]=1;
    int m=(l+r)>>1;
    return Tree[n]=init(l,m,n<<1)+init(m+1,r,n<<1|1);
}
void propagate(int l,int r,int n){
    if (l<r&&!Tree[n])
        Tree[n<<1]=Tree[n<<1|1]=0;
}
int query(int x,int l,int r,int n){
    propagate(l,r,n);
    if (l==r){
        if (x==1)
            return l;
        return l+1;
    }
    int m=(l+r)>>1;
    if (Tree[n<<1]<x)
        return query(x-Tree[n<<1],m+1,r,n<<1|1);
    return query(x,l,m,n<<1);
}
int update(int lx,int rx,int l,int r,int n){
    propagate(l,r,n);
    if (r<lx||rx<l)
        return Tree[n];
    if (lx<=l&&r<=rx)
        return Tree[n]=0;
    int m=(l+r)>>1;
    return Tree[n]=update(lx,rx,l,m,n<<1)+update(lx,rx,m+1,r,n<<1|1);
}
int GetBestPosition(int _N, int C, int R, int *K, int *S, int *E){
    N=_N;
    init(0,N-1,1);
    for (int i=0; i<C; i++){
        int l=query(S[i]+1,0,N-1,1);
        int r=query(E[i]+2,0,N-1,1)-1;
        S[i]=l;
        E[i]=r;
        update(l+1,r,0,N-1,1);
    }
    int mxCnt=-1,ans;
    for (int t=0; t<N; t++){
        for (int i=0; i<t; i++)
            A[i]=K[i];
        A[t]=R;
        for (int i=t+1; i<N; i++)
            A[i]=K[i-1];
        int l=t,r=t;
        while (l&&A[l-1]<A[t])
            l--;
        while (r+1<N&&A[r+1]<A[t])
            r++;
        int cnt=0;
        for (int i=0; i<C; i++){
            if (S[i]<=t&&t<=E[i]){
                if (S[i]<l||r<E[i])
                    break;
                cnt++;
            }
        }
        if (mxCnt<cnt){
            mxCnt=cnt;
            ans=t;
        }
    }
    return ans;
}

Compilation message

tournament.cpp: In function 'int GetBestPosition(int, int, int, int*, int*, int*)':
tournament.cpp:71:12: warning: 'ans' may be used uninitialized in this function [-Wmaybe-uninitialized]
   71 |     return ans;
      |            ^~~

Subtask #1
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 452 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 1 ms 348 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct

Subtask #2
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 23 ms 644 KB Output is correct
3 Correct 21 ms 348 KB Output is correct
4 Correct 23 ms 604 KB Output is correct
5 Correct 20 ms 604 KB Output is correct
6 Correct 31 ms 604 KB Output is correct
7 Correct 25 ms 604 KB Output is correct
8 Correct 23 ms 636 KB Output is correct
9 Correct 11 ms 344 KB Output is correct
10 Correct 30 ms 528 KB Output is correct

Subtask #3
0 / 51.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1058 ms 1996 KB Time limit exceeded
2 Halted 0 ms 0 KB -