Submission #417378

#	Time	Username	Problem	Language	Result	Execution time	Memory
417378		doowey	Cigle (COI21_cigle)	C++14	0 / 100	3 ms	2764 KiB

cigle

#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

const int N = 5010;
int dp[N][N];
int D[N];
bool mark[N];

int main(){
    fastIO;
    int n;
    cin >> n;
    for(int i = 1; i <= n; i ++ ){
        cin >> D[i];
    }
    int pp;
    int cum;
    int cur;
    int outp = 0;
    int pap = 0;
    int dap;
    int val = 0;
    int total;
    for(int cut = 2; cut <= n; cut ++ ){
        for(int ash = 2; ash <= cut - 1; ash ++ ){
            dp[ash][cut - 1] = max(dp[ash][cut - 1], dp[ash-1][cut-1]);
        }
        cur = 0;
        cum = 0;
        pp = cut;
        dap = cut - 1;
        val = 0;
        total = 0;
        for(int go = cut; go <= n; go ++ ){
            dp[cut][go] = dp[dap][cut - 1] + val;
            if(go == n)
                outp = max(outp, dp[cut][go]);

            cur += D[go];
            while(pp > 1 && cum < cur){
                pp --;
                cum += D[pp];
            }
            if(cum == cur){
                total ++ ;
                if(pp - 1 >= dap) val ++ ;
                else{
                    if(dp[pp - 1][cut - 1] + total >= dp[dap][cut - 1] + val){
                        val = total;
                        dap = pp - 1;
                    }
                }
            }

        }
    }
    cout << outp << "\n";
    return 0;
}

Compilation message (stderr)

cigle.cpp: In function 'int main()':
cigle.cpp:29:9: warning: unused variable 'pap' [-Wunused-variable]
   29 |     int pap = 0;
      |         ^~~

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