Submission #489746

#	Time	Username	Problem	Language	Result	Execution time	Memory
489746		lukameladze	Secret (JOI14_secret)	C++14	100 / 100	443 ms	8220 KiB

secret

# include <bits/stdc++.h>
# include <secret.h>
#define f first
#define s second
#define pb push_back
using namespace std;
const int M = 1005;
int a[M],ans[M][M],n;
/*int Secret(int a, int b) {
	return min(1000000000, a + 2*(b/2));
}*/
void solve(int le, int ri) {
     if (le == ri) return ;
     int mid = (le + ri) / 2;
    // cout<<le<<" "<<ri<<endl;
     for (int i = mid - 1; i >= le; i--) {
          ans[i][mid] = Secret(a[i],ans[i + 1][mid]);
     }
     for (int i = mid + 2; i <= ri; i++) {
          ans[mid + 1][i] = Secret(ans[mid + 1][i - 1], a[i]);
     }
     solve(le, mid);
     solve(mid + 1, ri);
}
int getans(int le, int ri, int start, int end) {
     int mid = (le + ri) / 2;
     if (le <= start && ri >= end) {
          if (end == mid) {
               return ans[start][mid];
          }
          if (start == mid + 1) {
               return ans[mid + 1][end];
          }
          if (mid >= start && mid <= end) {
               return Secret(ans[start][mid], ans[mid + 1][end]);
          }
          if (mid >= end) {
               return getans(le,mid,start,end);
          } else return getans(mid + 1, ri, start,end);
     }
}
void Init(int N, int A[]) {
     n = N;
     for (int  i = 0; i < n; i++) {
          a[i] = A[i];
          ans[i][i] = a[i];
     }
     solve(0,n - 1);
}
int Query(int L,int R) {
     return getans(0,n-1,L,R);
}

Compilation message (stderr)

secret.cpp: In function 'int getans(int, int, int, int)':
secret.cpp:41:1: warning: control reaches end of non-void function [-Wreturn-type]
   41 | }
      | ^

• Subtask 1: 100 / 100