Submission #1079084

#TimeUsernameProblemLanguageResultExecution timeMemory
1079084hahahahaDivide and conquer (IZhO14_divide)C++17
100 / 100
39 ms6860 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; } //const i64 base=1e9+7; //const i64 mod=(1ll<<53)+5; #define i64 long long #define debug 0 const int mod=1e9+7; //const int mod=998244353; const int inf=1e9; ///check the limits, dummy const int N=1e5+5; struct Fenwick { vector<i64>bit; int n; Fenwick(int n) { this->n=n+10; bit.assign(n+10,1e18); } Fenwick(vector<int>a):Fenwick(sz(a)) { FOR(i,0,sz(a)-1)add(i,a[i]); } i64 get(int i) { i64 ans=1e18; for(++i;i>0;i-=i&-i)ans=min(ans,bit[i]); return ans; } void add(int i,i64 v) { for(++i;i<n;i+=i&-i)bit[i]=min(bit[i],v); } }; int x[N]; i64 s[N],g[N]; int n; die_hard_onimai_fan { cin>>n; FOR(i,1,n) { cin>>x[i]>>g[i]>>s[i]; g[i]+=g[i-1]; s[i]+=s[i-1]; } vector<i64>val; FOR(i,1,n)val.pb(s[i-1]-x[i]); sort(all(val)); val.erase(unique(all(val)),val.end()); int m=sz(val); Fenwick T(m); i64 ans=0; FOR(i,1,n) { T.add(lower_bound(all(val),s[i-1]-x[i])-val.begin()+1,g[i-1]); int p=upper_bound(all(val),s[i]-x[i])-val.begin(); i64 tmp=T.get(p); ans=max(ans,g[i]-tmp); } cout<<ans; } __sumairu__ { FAST file(""); int tt=1;//cin>>tt; while(tt--)seggs(); cerr<<"\nTime elapsed: "<<TIME<<" s.\n"; } /** 4 0 5 1 1 7 2 4 4 1 7 15 1 */

Compilation message (stderr)

divide.cpp:57:21: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   57 | #define __sumairu__ main()
      |                     ^~~~
divide.cpp:150:1: note: in expansion of macro '__sumairu__'
  150 | __sumairu__
      | ^~~~~~~~~~~
divide.cpp: In function 'int main()':
divide.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);}
      |                                              ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
divide.cpp:153:5: note: in expansion of macro 'file'
  153 |     file("");
      |     ^~~~
divide.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);}
      |                                                                            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
divide.cpp:153:5: note: in expansion of macro 'file'
  153 |     file("");
      |     ^~~~
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