Submission #257535

#	Time	Username	Problem	Language	Result	Execution time	Memory
257535		BThero	Bigger segments (IZhO19_segments)	C++17	27 / 100	1592 ms	70912 KiB

segments

// chrono::system_clock::now().time_since_epoch().count()
#include<bits/stdc++.h>

#define pb push_back
#define eb emplace_back
#define mp make_pair
#define fi first
#define se second
#define all(x) (x).begin(), (x).end()
#define debug(x) cerr << #x << " = " << x << endl;

using namespace std;

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

const int MAXN = (int)3e3 + 5;
const ll INF = (ll)1e16;

ll dp[MAXN][MAXN];
int arr[MAXN];
int n;

void solve() {
  scanf("%d", &n);
  
  for (int i = 1; i <= n; ++i) {
    scanf("%d", &arr[i]);
  }
  
  for (int i = 0; i <= n; ++i) {
    for (int j = 0; j <= n; ++j) {
      dp[i][j] = INF;
    }
  }
  
  dp[0][0] = 0;
  
  for (int i = 1; i <= n; ++i) {
    ll cur = 0;
    
    for (int j = i; j; --j) {
      cur += arr[j];
      
      for (int k = 1; k <= n; ++k) {
        if (dp[j - 1][k - 1] <= cur) {
          dp[i][k] = min(dp[i][k], cur);
        }
      }
    }
  }
  
  int ans = n;
  
  while (dp[n][ans] == INF) {
    --ans;
  }
  
  printf("%d\n", ans);
}

int main() {
  int tt = 1;
  
  while (tt--) {
    solve();
  }

  return 0;
}

Compilation message (stderr)

segments.cpp: In function 'void solve()':
segments.cpp:25:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d", &n);
   ~~~~~^~~~~~~~~~
segments.cpp:28:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d", &arr[i]);
     ~~~~~^~~~~~~~~~~~~~~

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