Submission #1261398

#	Time	Username	Problem	Language	Result	Execution time	Memory
1261398		sasde	Rabbit Carrot (LMIO19_triusis)	C++20	0 / 100	8 ms	16148 KiB

triusis

#include<bits/stdc++.h>
using namespace std;
bool M1;
#define PI 3.14159265358979323846
#define sz(a) (int)a.size()
#define all(x) x.begin(),x.end()
#define ii pair<int,int>
#define iii pair<int,ii>
#define iv pair<ii,ii>
#define se second
#define fi first
#define ffi fi.fi
#define sfi se.fi
#define sse se.se
#define fse fi.se
#define lt(i, c, d) for(int i = c; i <= d; ++i)
#define fl(i, c, d) for(int i = d; i >= c; --i)
#define pb push_back
#define emb emplace_back
#define emf emplace_front
#define int long long
#define em emplace
#define look_memory cerr<<abs(&M2-&M1)/1024.0/1024<<'\n'
#define look_time   cerr << "TIME : " << clock() * 0.001 << "s" <<'\n'
const int N=1e6+5,lg=30,mod=1e9+7;
mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
int Rand(int u,int v){
 return u+rd()%(v-u+1);
}
int dx[]={1,0,-1,0,1,1,-1,-1};
int dy[]={0,-1,0,1,1,-1,1,-1};
int node,w,ans,a[N],dp[N][2];
bool M2;
void solve(){
    cin >> node >> w;
    for(int i=1;i<=node;++i)cin >> a[i];
    memset(dp,0x3f,sizeof dp);
    dp[0][0]=0;
    a[0]=0;
    for(int i=1;i<=node;++i){
        if(a[i-1]>=a[i]-w){
            dp[i][0]=min(dp[i-1][0],dp[i][0]);
        }
            dp[i][1]=min(dp[i-1][0]+1,dp[i][1]);
            dp[i][1]=min(dp[i-1][1]+1,dp[i][1]);
        if(i>1&&a[i-2]+w>=a[i]-w){
            dp[i][0]=min(dp[i][0],dp[i-2][0]+1);
        }
        // cout <<dp[i][0]<<" "<<dp[i][1]<<'\n';
    }

    cout << min(dp[node][0],dp[node][1]);
}
main()
{
  srand(time(0));
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    #define task "aws"
    if(fopen(task".inp","r")){
      freopen(task".inp","r",stdin);
      freopen(task".out","w",stdout);
    }
    int t=1;
 //   cin >> t;
while(t--){
    solve();cout<<'\n';
}
look_memory;
look_time;
}

Compilation message (stderr)

triusis.cpp:54:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   54 | main()
      | ^~~~
triusis.cpp: In function 'int main()':
triusis.cpp:62:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   62 |       freopen(task".inp","r",stdin);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
triusis.cpp:63:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   63 |       freopen(task".out","w",stdout);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 14
• Subtask 2: 0 / 21
• Subtask 3: 0 / 28
• Subtask 4: 0 / 37