Submission #376339

#	Time	Username	Problem	Language	Result	Execution time	Memory
376339		i_am_noob	Candies (JOI18_candies)	C++17	8 / 100	3546 ms	8880 KiB

candies

#pragma GCC target("sse,sse2,sse3,ssse3,sse4,avx,avx2,fma")
#include<bits/stdc++.h>
#pragma GCC optimize("Ofast,unroll-loops")
using namespace std;

#define ll long long
#define ull unsigned long long
#define ld long double
#define rep(a) rep1(i,a)
#define rep1(i,a) rep2(i,0,a)
#define rep2(i,b,a) for(int i=(b); i<((int)(a)); i++)
#define rep3(i,b,a) for(int i=(b); i>=((int)(a)); i--)
#define all(a) a.begin(),a.end()
#define pii pair<int,int>
#define pb push_back
#define inf 1010000000
//#define inf 4000000000000000000
#define eps 1e-9
#define sz(a) ((int)a.size())
#define pow2(x) (1ll<<(x))
#define ceiling(a,b) (((a)+(b)-1)/(b))
#ifdef i_am_noob
#define bug(...) cerr << "#" << __LINE__ << ' ' << #__VA_ARGS__ << "- ", _do(__VA_ARGS__)
template<typename T> void _do(T && x) {static int cnt=0;cerr << x << endl;cnt++;if(cnt>1000) exit(0);}
template<typename T, typename ...S> void _do(T && x, S&&...y) {cerr << x << ", "; _do(y...);}
#else
#define bug(...) 826
#endif

inline char readchar(){
    const int maxn=1000000;
    static char buf[maxn],*p=buf,*q=buf;
    if(p==q&&(q=(p=buf)+fread(buf,1,maxn,stdin))==buf) return EOF;
    else return *p++;
}
inline int readint(){
    int c=readchar(),x=0,neg=0;
    while((c<'0'||c>'9')&&c!='-'&&c!=EOF) c=readchar();
    if(c=='-') neg=1,c=readchar();
    while(c>='0'&&c<='9') x=(x<<3)+(x<<1)+(c^'0'),c=readchar();
    return neg?-x:x;
}

const int Mod=1000000007,Mod2=998244353;
const int MOD=Mod;
const int maxn=200005;
//i_am_noob


signed main(){
    ios_base::sync_with_stdio(0),cin.tie(0);
    #ifdef i_am_noob
    freopen("input1.txt","r",stdin);
    freopen("output1.txt","w",stdout);
    freopen("output2.txt","w",stderr);
    #endif
    int n,a[maxn];
    ll dp[3][maxn];
    n=readint();
    rep(n) a[i]=readint();
    rep(n) dp[0][i]=dp[1][i]=-inf;
    dp[0][0]=dp[1][0]=0,dp[1][1]=a[0];
    rep2(i,1,min(n,150000)){
        int x=(i+1)%3,y=(i+2)%3,z=i%3;
        dp[x][0]=0;
        rep2(j,1,i+4>>1) dp[x][j]=dp[z][j]>dp[y][j-1]+a[i]?dp[z][j]:dp[y][j-1]+a[i];
    }
    rep2(i,1,n+3>>1) cout << dp[n%3][i] << "\n";
    return 0;
}

Compilation message (stderr)

candies.cpp: In function 'int main()':
candies.cpp:66:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   66 |         rep2(j,1,i+4>>1) dp[x][j]=dp[z][j]>dp[y][j-1]+a[i]?dp[z][j]:dp[y][j-1]+a[i];
      |                  ~^~
candies.cpp:11:45: note: in definition of macro 'rep2'
   11 | #define rep2(i,b,a) for(int i=(b); i<((int)(a)); i++)
      |                                             ^
candies.cpp:68:15: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   68 |     rep2(i,1,n+3>>1) cout << dp[n%3][i] << "\n";
      |              ~^~
candies.cpp:11:45: note: in definition of macro 'rep2'
   11 | #define rep2(i,b,a) for(int i=(b); i<((int)(a)); i++)
      |                                             ^

• Subtask 1: 8 / 8
• Subtask 2: 0 / 92