Submission #1022475

#	Time	Username	Problem	Language	Result	Execution time	Memory
1022475		phoenix	Bigger segments (IZhO19_segments)	C++17	37 / 100	7 ms	552 KiB

segments

#include<bits/stdc++.h>

#ifdef LOCAL
#include "../prettyprint.hpp"
#define cerr cout
#define debug(x) cerr << "\033[36m"<< __LINE__ << ":\033[39m "  << (#x) << " = " << (x) << '\n'
#else 
#define cerr if(false) cout
#define debug(x) 42
#endif


using namespace std;
using ll = long long;

const int N = 3030;

int n;
int a[N];
ll s[N];

int dp[N];
ll opt[N];

int main() {
    ios::sync_with_stdio(0);
    cin.tie(0);cout.tie(0);
    cin >> n;
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
    }
    for (int i = 1; i <= n; i++) 
        s[i] = s[i - 1] + a[i];
    
    dp[0] = 0; opt[0] = 0;

    for (int i = 1; i <= n; i++) {
        for (int j = 0; j < i; j++) {
            if (s[i] >= opt[j] + s[j]) {
                dp[i] = max(dp[i], dp[j] + 1);
                opt[i] = s[i] - s[j];
            }
        }
    }
    cout << dp[n];
}

• Subtask 1: 13 / 13
• Subtask 2: 14 / 14
• Subtask 3: 10 / 10
• Subtask 4: 0 / 36
• Subtask 5: 0 / 27