Submission #420832

#	Time	Username	Problem	Language	Result	Execution time	Memory
420832		HappyPacMan	Cigle (COI21_cigle)	C++14	0 / 100	3 ms	2764 KiB

cigle

#include <bits/stdc++.h>
using namespace std;
const int MXN = 5005;
int dp[MXN][MXN];

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);

    int N;
    cin >> N;
    int arr[N];
    for(int i=0;i<N;i++) cin >> arr[i];
    int res = 0;
    for(int i=1;i<N;i++){
        int pref[i];
        pref[0] = dp[0][i-1];
        for(int j=1;j<i;j++) pref[j] = max(pref[j-1],dp[j][i-1]);
        int l=0,r=0,lst=i-1,cost=0;
        for(int j=i,k=i-1;j<N;j++){
            if(lst >= 0) dp[i][j] = pref[lst] + cost;
            l += arr[j];
            if(k >= 0 && r+arr[k] <= l) r += arr[k--];
            if(l == r){
                cost++,lst=k+1;
                if(k >= 0) r += arr[k--];
                lst--;
            }
        }
        for(int j=i+1;j<N;j++) dp[i][j] = max(dp[i][j-1],dp[i][j]);
        for(int j=0;j<N;j++) res = max(res,dp[i][j]);
    }
    cout << res << '\n';
}

• Subtask 1: 0 / 9
• Subtask 2: 0 / 11
• Subtask 3: 0 / 13
• Subtask 4: 0 / 15
• Subtask 5: 0 / 52