Submission #1078472

#TimeUsernameProblemLanguageResultExecution timeMemory
1078472hahahahaCollecting Stamps 3 (JOI20_ho_t3)C++17
100 / 100
69 ms65104 KiB
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#define i64 long long #define ld long double #define bit(n,i) ((n>>i)&1) #define pii pair<int,int> #define sz(x) (int)x.size() #define FOR(i,a,b) for(int i=a; i<=b; i++) #define FOD(i,a,b) for(int i=a; i>=b; i--) #define fi first #define se second #define pb push_back #define all(x) x.begin(),x.end() #define __sumairu__ main() #define die_hard_onimai_fan void seggs() #define file(name) if(fopen(name".inp","r")){freopen(name".inp","r",stdin);freopen(name".out","w",stdout);} #define brute(name) if(fopen(name".inp","r")){freopen(name".inp","r",stdin);freopen(name".ans","w",stdout);} #define TIME (1.0*clock()/CLOCKS_PER_SEC) #define FAST ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0); #define ai(n) array<int,n> #define dbg(x) {cerr<<#x<<' '<<x<<endl;} #define dbgArr(arr,n) {cerr<<#arr;FOR(_i,1,n)cerr<<' '<<(arr)[_i];cerr<<endl;} template <typename T,typename U> ostream& operator<<(ostream &os,pair<T,U>p){ return os<<"{"<<p.fi<<", "<<p.se<<"}"; } mt19937_64 rd(chrono::steady_clock::now().time_since_epoch().count()); i64 Rand(i64 l,i64 r) { i64 ans=l+1ll*rd()*rd()%(r-l+1); assert(l<=ans&&ans<=r); return ans; } #define i64 long long #define debug 0 //const i64 base=1e9+7; //const i64 mod=(1ll<<53)+5; const int mod=1e9+7; //const int mod=998244353; const int inf=1e9; ///check the limits, dummy const int N=202; int n,L; int x[N],t[N]; int dp[N][N][N][2]; int dist(int a,int b) { return min((a-b+L)%L,(b-a+L)%L); } die_hard_onimai_fan { cin>>n>>L; FOR(i,1,n)cin>>x[i]; FOR(i,1,n)cin>>t[i]; x[n+1]=L,t[n+1]=INT_MAX; memset(dp,60,sizeof dp); dp[0][0][0][0]=dp[0][0][0][1]=0; int ans=0; FOR(len,0,n)FOR(i,0,len) { int j=len-i; int lim=i+j; FOR(k,0,lim) { FOR(o,0,1)if(dp[i][j][k][o]<1e9) { ans=max(ans,k); int ed=(o?x[n-j+1]:x[i]); if(i<n) { int tmp=dp[i][j][k][o]+dist(ed,x[i+1]); int nk=k+(tmp<=t[i+1]); dp[i+1][j][nk][0]=min(dp[i+1][j][nk][0],tmp); } if(j<n) { int tmp=dp[i][j][k][o]+dist(ed,x[n-j]); int nk=k+(tmp<=t[n-j]); dp[i][j+1][nk][1]=min(dp[i][j+1][nk][1],tmp); } } } } //FOR(i,0,n)FOR(j,0,n)FOR(k,0,n)FOR(o,0,1)if(dp[i][j][k][o]<inf)cout<<i<<' '<<j<<' '<<k<<' '<<o<<' '<<dp[i][j][k][o]<<'\n'; cout<<ans<<'\n'; } __sumairu__ { FAST file(""); int tt=1;//cin>>tt; while(tt--)seggs(); cerr<<"\nTime elapsed: "<<TIME<<" s.\n"; } /** 6 25 3 4 7 17 21 23 11 7 17 10 8 10 */

Compilation message (stderr)

ho_t3.cpp:57:21: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   57 | #define __sumairu__ main()
      |                     ^~~~
ho_t3.cpp:140:1: note: in expansion of macro '__sumairu__'
  140 | __sumairu__
      | ^~~~~~~~~~~
ho_t3.cpp: In function 'int main()':
ho_t3.cpp:59:53: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 | #define file(name) if(fopen(name".inp","r")){freopen(name".inp","r",stdin);freopen(name".out","w",stdout);}
      |                                              ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
ho_t3.cpp:143:5: note: in expansion of macro 'file'
  143 |     file("");
      |     ^~~~
ho_t3.cpp:59:83: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   59 | #define file(name) if(fopen(name".inp","r")){freopen(name".inp","r",stdin);freopen(name".out","w",stdout);}
      |                                                                            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
ho_t3.cpp:143:5: note: in expansion of macro 'file'
  143 |     file("");
      |     ^~~~
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