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Submission #578673

# Submission time Handle Problem Language Result Execution time Memory
578673 2022-06-17T14:15:38 Z FatihSolak popa (BOI18_popa) C++17
100 / 100
 122 ms 448 KB 
#include <bits/stdc++.h>
#include "popa.h"
#define N 1005
using namespace std;
int L[N],R[N];
int prv[N];
int f(int l,int r){
    if(l > r)return -1;
    for(int i = r;i>=l;i--){
        if(prv[i] < l){
            L[i] = f(l,i-1);
            R[i] = f(i+1,r);
            return i;
        }
    }
}
int solve(int n, int* Left, int* Right){
    for(int i = 0;i<n;i++){
        L[i] = R[i] = -1;
        prv[i] = -1;
    }
    for(int i = 0;i<n;i++){
        int r = n-1;
        while(r + 1 != n && query(i,r+1,i,i))
            r++;
        stack<int> st;
        for(int j = i;j<=r;j++){
            while(st.size() && query(st.top(),j,j,j)){
                st.pop();
            }
            if(st.size())
                prv[j] = st.top();
            st.push(j);
        }
        i = r;
    }
    int ret = f(0,n-1);
    for(int i = 0;i<n;i++){
        Left[i] = L[i];
        Right[i] = R[i];
    }
    return ret;
}

Compilation message

popa.cpp: In function 'int f(int, int)':
popa.cpp:16:1: warning: control reaches end of non-void function [-Wreturn-type]
   16 | }
      | ^

Subtask #1
37.0 / 37.0

# Verdict Execution time Memory Grader output
1 Correct 9 ms 208 KB Output is correct
2 Correct 11 ms 208 KB Output is correct
3 Correct 8 ms 208 KB Output is correct
4 Correct 8 ms 208 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 424 KB Output is correct
2 Correct 86 ms 332 KB Output is correct
3 Correct 55 ms 448 KB Output is correct
4 Correct 86 ms 300 KB Output is correct

Subtask #3
39.0 / 39.0

# Verdict Execution time Memory Grader output
1 Correct 91 ms 332 KB Output is correct
2 Correct 120 ms 328 KB Output is correct
3 Correct 70 ms 328 KB Output is correct
4 Correct 122 ms 304 KB Output is correct