Submission #118135

#TimeUsernameProblemLanguageResultExecution timeMemory
118135scanhexNaan (JOI19_naan)C++17
100 / 100
1381 ms149400 KiB
#include <bits/stdc++.h> using namespace std; using nagai = __int128; using big=__int128; using unagai=unsigned long long; using ll=long long; #define sz(x) int((x).size()) const int N=2020; int n,m; nagai matr[N][N]; nagai pref[N][N]; nagai gcd(nagai a,nagai b){ while(b){ a%=b,swap(a,b); } return a; } struct frac; frac find(frac a,frac b); const nagai C=1000000000LL; struct frac{ nagai a,b; frac(){} void find(){ if(b<=C)return; frac r(a+1,b,0); int it=0; while(true){ if(++it>40)break; frac nw=::find(*this,r); // cerr<<r.a<<' '<<r.b<<'\n'; if(nw.a==a&&nw.b==b)return; if(nw.b>C){ a=r.a,b=r.b; return; } r=nw; } } void check(){ if(a==0)return; nagai g=gcd(a,b); a/=g; b/=g; // find(); } frac(nagai a,nagai b,bool ch=false):a(a),b(b){ if(ch) check(); } frac(nagai x):a(x),b(1){} frac operator *(frac o){ return frac(a*o.a,b*o.b); } frac operator +(frac o){ return frac(a*o.b+o.a*b,b*o.b); } frac operator -(frac o){ return frac(a*o.b-o.a*b,b*o.b); } bool operator <=(frac o){ return a*o.b<=b*o.a; } bool operator <(frac o){ return a*o.b<b*o.a; } }; frac find(frac l, frac r){ //cerr<<l.a<<' '<<l.b<<' '<<r.a<<' '<<r.b<<'\n'; if(l.a>=l.b){ nagai d=l.a/l.b; frac ans=find(frac(l.a-l.b*d,l.b,0),frac(r.a-r.b*d,r.b,0)); ans.a+=ans.b*d; return ans; } if(r.a>r.b) return frac(1,1,0); frac ans=find(frac(r.b,r.a,0),frac(l.b,l.a,0)); swap(ans.a,ans.b); return ans; } int main(){ ios::sync_with_stdio(false); cin.tie(0); cin>>n>>m; for(int i=0;i<n;++i) for(int j=0;j<m;++j){ ll x; cin>>x; matr[i][j]=x; pref[i][j+1]=pref[i][j]+matr[i][j]; } frac cur(0); vector<frac>fr; vector<int>ord; vector<bool>used(n); for(int i=0;i<n;++i){ frac mn(1e9); int mni=-1; for(int j=0;j<n;++j){ if(used[j])continue; // frac kek=frac(matr[j][lb])*frac(cur.a%cur.b,cur.b); int L=0,R=m+1; while(R-L>1){ int M=(L+R)/2; if(frac(pref[j][M])<=frac(pref[j][m])*frac(i+1,n)) L=M; else R=M; } frac rest(0); rest=frac(pref[j][m])*frac(i+1,n)-frac(pref[j][L]); if(rest.a) rest=rest*frac(1,matr[j][L]); rest=rest+frac(L); rest.check(); if(rest<mn) mn=rest,mni=j; } cur=mn; // cerr<<cur.a<<' '<<cur.b<<'\n'; fr.push_back(cur); ord.push_back(mni); used[mni]=true; } for(int i=0;i<n-1;++i){ cout<<(ll)fr[i].a<<' '<<(ll)fr[i].b<<'\n'; } for(int i=0;i<n;++i) cout<<ord[i]+1<<' '; cout<<'\n'; return 0; }
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