Submission #970374

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
970374	2024-04-26 12:49:23	starchan	Linear Garden (IOI08_linear_garden)	C++17	65 / 100	26 ms	65536 KiB

linear_garden

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#include<bits/stdc++.h>
using namespace std;
#define int long long
#define in array<int, 2>
#define pb push_back
#define pob pop_back
#define INF (int)1e17
#define fast() ios_base::sync_with_stdio(false); cin.tie(NULL)
const int MX = 1e6+3;
int mod;
int dp[3][3][3][MX];
int solve(int m, int M, int cur, int K)
{
  if((M > 2) || (cur > M) || (cur < 0) || (m < 0))
    return 0;
  if(dp[m][M][cur][K] != -1)
    return dp[m][M][cur][K];
  if(K == 0)
    return dp[m][M][cur][K] = 1;
  
  int m1 = m+min(0ll, cur-1); int opt1 = solve(m1, M+m-m1, cur+m-m1-1, K-1);
  int M2 = max(M, cur+1); int opt2 = solve(m, M2, cur+1, K-1);
  return dp[m][M][cur][K] = (opt1+opt2)%mod;
}
 
 
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Compilation message (stderr)

linear_garden.cpp: In function 'int main()':
linear_garden.cpp:65:32: warning: the omitted middle operand in '?:' will always be 'true', suggest explicit middle operand [-Wparentheses]
   65 |   a[i] = a[i-1] + ((c == 'P') ?: -1);
      |                                ^

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