Submission #1079793

#TimeUsernameProblemLanguageResultExecution timeMemory
1079793hahahahaThe Kingdom of JOIOI (JOI17_joioi)C++17
100 / 100
407 ms54868 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=2003; int n,m; int a[N][N]; void swap_row() { FOR(j,1,m) { FOR(i,1,n/2)swap(a[i][j],a[n-i+1][j]); } } void swap_col() { FOR(i,1,n) { FOR(j,1,m/2)swap(a[i][j],a[i][m-j+1]); } } int ans; int mn=inf,mx=-inf; bool check(int x) { int lst=m; FOR(i,1,n) { FOR(j,0,lst-1)if(a[i][j+1]-mn>x) { lst=j; break; } FOD(j,m,lst+1)if(a[i][j]<mx-x)return 0; } return 1; } void cal() { int l=0,r=ans; while(l<=r) { int mid=(l+r)/2; if(check(mid)) { ans=mid; r=mid-1; } else l=mid+1; } } die_hard_onimai_fan { cin>>n>>m; FOR(i,1,n)FOR(j,1,m) { cin>>a[i][j]; mn=min(mn,a[i][j]); mx=max(mx,a[i][j]); } ans=mx-mn; cal(); swap_row(); cal(); swap_col(); cal(); swap_row(); cal(); cout<<ans<<'\n'; } __sumairu__ { FAST file(""); int tt=1;//cin>>tt; while(tt--)seggs(); cerr<<"\nTime elapsed: "<<TIME<<" s.\n"; } /** 4 4 1 12 6 11 11 10 2 14 10 1 9 20 4 17 19 10 */

Compilation message (stderr)

joioi.cpp:57:21: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   57 | #define __sumairu__ main()
      |                     ^~~~
joioi.cpp:165:1: note: in expansion of macro '__sumairu__'
  165 | __sumairu__
      | ^~~~~~~~~~~
joioi.cpp: In function 'int main()':
joioi.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);}
      |                                              ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
joioi.cpp:168:5: note: in expansion of macro 'file'
  168 |     file("");
      |     ^~~~
joioi.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);}
      |                                                                            ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
joioi.cpp:168:5: note: in expansion of macro 'file'
  168 |     file("");
      |     ^~~~
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