제출 #344552

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
344552		tata666	Bigger segments (IZhO19_segments)	C++17	컴파일 에러	0 ms	0 KiB

segments

#include <bits/stdc++.h>

#define pb push_back
#define F first
#define S second

using namespace std;

typedef long long llong;

const int MOD = 1e9 + 7;
const int MXN = 4e5 + 7;
const llong INF = 1e18 + 7;

int n, ans
int dp[3001][3001];
llong pref[MXN], a[MXN];

int main(){
  ios_base::sync_with_stdio(0);
  //freopen("input.txt", "r", stdin);
  //freopen("output.txt", "w", stdout);
  cin >> n;
  for(int i = 1; i <= n; i++){
    cin >> a[i];
    dp[1][i] = 1;
    pref[i] = pref[i - 1] + a[i];
  }
  for(int i = 1; i <= n; i++){
    for(int j = i; j <= n; j++){
      for(int k = j + 1; k <= n; k++){
        if(pref[j] - pref[i - 1] <= pref[k] - pref[j]){
          dp[j + 1][k] = max(dp[j + 1][k], dp[i][j] + 1);
        }
      }
    }
  }
  for(int i = 1; i <= n; i++){
    ans = max(dp[i][n], ans);
  }
  cout << ans;
  return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

segments.cpp:16:1: error: expected initializer before 'int'
   16 | int dp[3001][3001];
      | ^~~
segments.cpp: In function 'int main()':
segments.cpp:26:5: error: 'dp' was not declared in this scope
   26 |     dp[1][i] = 1;
      |     ^~
segments.cpp:33:11: error: 'dp' was not declared in this scope
   33 |           dp[j + 1][k] = max(dp[j + 1][k], dp[i][j] + 1);
      |           ^~
segments.cpp:39:5: error: 'ans' was not declared in this scope; did you mean 'abs'?
   39 |     ans = max(dp[i][n], ans);
      |     ^~~
      |     abs
segments.cpp:39:15: error: 'dp' was not declared in this scope
   39 |     ans = max(dp[i][n], ans);
      |               ^~
segments.cpp:41:11: error: 'ans' was not declared in this scope; did you mean 'abs'?
   41 |   cout << ans;
      |           ^~~
      |           abs