結果
問題 | No.5002 stick xor |
ユーザー | ts_ |
提出日時 | 2018-06-01 00:25:55 |
言語 | C++11 (gcc 11.4.0) |
結果 |
AC
|
実行時間 | 996 ms / 1,000 ms |
コード長 | 5,018 bytes |
コンパイル時間 | 35,905 ms |
実行使用メモリ | 1,576 KB |
スコア | 47,459 |
最終ジャッジ日時 | 2018-06-01 00:26:33 |
ジャッジサーバーID (参考情報) |
judge7 / |
純コード判定しない問題か言語 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 994 ms
1,576 KB |
testcase_01 | AC | 995 ms
1,572 KB |
testcase_02 | AC | 994 ms
1,576 KB |
testcase_03 | AC | 995 ms
1,572 KB |
testcase_04 | AC | 995 ms
1,572 KB |
testcase_05 | AC | 996 ms
1,572 KB |
testcase_06 | AC | 995 ms
1,572 KB |
testcase_07 | AC | 994 ms
1,576 KB |
testcase_08 | AC | 995 ms
1,572 KB |
testcase_09 | AC | 995 ms
1,576 KB |
testcase_10 | AC | 995 ms
1,576 KB |
testcase_11 | AC | 996 ms
1,572 KB |
testcase_12 | AC | 995 ms
1,576 KB |
testcase_13 | AC | 995 ms
1,572 KB |
testcase_14 | AC | 995 ms
1,576 KB |
testcase_15 | AC | 995 ms
1,572 KB |
testcase_16 | AC | 996 ms
1,576 KB |
testcase_17 | AC | 995 ms
1,576 KB |
testcase_18 | AC | 995 ms
1,572 KB |
testcase_19 | AC | 995 ms
1,572 KB |
testcase_20 | AC | 995 ms
1,572 KB |
testcase_21 | AC | 995 ms
1,572 KB |
testcase_22 | AC | 995 ms
1,576 KB |
testcase_23 | AC | 994 ms
1,572 KB |
testcase_24 | AC | 995 ms
1,572 KB |
testcase_25 | AC | 995 ms
1,576 KB |
testcase_26 | AC | 995 ms
1,572 KB |
testcase_27 | AC | 995 ms
1,572 KB |
testcase_28 | AC | 995 ms
1,572 KB |
testcase_29 | AC | 994 ms
1,572 KB |
testcase_30 | AC | 995 ms
1,576 KB |
testcase_31 | AC | 995 ms
1,572 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define FOR(i,a,b) for(int i=(a);i<(b);++i) #define rep(i,n) FOR(i,0,n) #define pb emplace_back typedef long long ll; typedef pair<int,int> pint; unsigned long xor128(){ static unsigned long x=123456789,y=362436069,z=521288629,w=88675123; unsigned long t=(x^(x<<11)); x=y;y=z;z=w; return (w=(w^(w>>19))^(t^(t>>8))); } double timeLimit=0.92; const int64_t CYCLES_PER_SEC=2800000000; struct Timer { int64_t start; Timer() { reset(); } void reset() { start = getCycle(); } void plus(double a) { start -= (a * CYCLES_PER_SEC); } inline double get() { return (double)(getCycle() - start) / CYCLES_PER_SEC; } inline int64_t getCycle() { uint32_t low, high; __asm__ volatile ("rdtsc" : "=a" (low), "=d" (high)); return ((int64_t)low) | ((int64_t)high << 32); } }; int n,k; int L[501]; string s[60]; bool g[60][60],g2[60][60]; pair<pint,pint> ans[500]; int lx,rx,ly,ry; int best,sub; int sumx[61][61],sumy[61][61]; pair<pint,pint> calc1(int length){ int x,y; bool f; int best=-1000100010; rep(i,n)rep(j,n){ sumx[i][j+1]=sumx[i][j]+g[i][j]; sumy[i+1][j]=sumy[i][j]+g[i][j]; } FOR(i,n-length+1,n){ if(best==length) break; rep(j,n-length+1){ if(g[i][j]){ int score=sumx[i][j+length]-sumx[i][j]; if(best<score){ x=j,y=i,f=true; best=score; } } if(g[j][i]){ int score=sumy[j+length][i]-sumy[j][i]; if(best<score){ y=j,x=i,f=false; best=score; } } } } for(int i=n-length;i>=0;--i){ if(best==length) break; for(int j=n-length;j>=0;--j)if(g[i][j]){ int score=sumx[i][j+length]-sumx[i][j]; if(best<score){ x=j,y=i,f=true; best=score; } score=sumy[i+length][j]-sumy[i][j]; if(best<score){ y=i,x=j,f=false; best=score; } } } if(f)FOR(j,x,x+length) g[y][j]^=1,sub+=g[y][j]?-1:1; else FOR(i,y,y+length) g[i][x]^=1,sub+=g[i][x]?-1:1; if(f) return {pint(y,x),pint(y,x+length-1)}; else return {pint(y,x),pint(y+length-1,x)}; } pair<pint,pint> calc2(int length){ int x,y; bool f; int best=-1000100010; rep(i,n)rep(j,n){ sumx[i][j+1]=sumx[i][j]+g[i][j]; sumy[i+1][j]=sumy[i][j]+g[i][j]; } rep(i,n-length+1){ if(best==length) break; rep(j,n-length+1)if(g[i][j]){ int score=sumx[i][j+length]-sumx[i][j]; if(best<score){ x=j,y=i,f=true; best=score; } score=sumy[i+length][j]-sumy[i][j]; if(best<score){ y=i,x=j,f=false; best=score; } } } FOR(i,n-length+1,n){ if(best==length) break; rep(j,n-length+1){ if(g[i][j]){ int score=sumx[i][j+length]-sumx[i][j]; if(best<score){ x=j,y=i,f=true; best=score; } } if(g[j][i]){ int score=sumy[j+length][i]-sumy[j][i]; if(best<score){ y=j,x=i,f=false; best=score; } } } } if(f)FOR(j,x,x+length) g[y][j]^=1,sub+=g[y][j]?-1:1; else FOR(i,y,y+length) g[i][x]^=1,sub+=g[i][x]?-1:1; if(f) return {pint(y,x),pint(y,x+length-1)}; else return {pint(y,x),pint(y+length-1,x)}; } int main(){ Timer timer; timer.reset(); cin>>n>>k; rep(i,k) cin>>L[i]; rep(i,n) cin>>s[i]; rep(i,n)rep(j,n) g[i][j]=s[i][j]-'0'; rep(i,k) ans[i]=i%2?calc2(L[i]):calc1(L[i]); memcpy(g2,g,sizeof(g)); int id,num=6; vector<pint> cnd(num); vector<pair<pint,pint> >tmp(num); double t; int cnt=0; while(1){ t=timer.get(); if(t>timeLimit) break; sub=0; rep(l,num){ while(id=xor128()%k,count(cnd.begin(),cnd.begin()+l,pint(L[id],id))||L[id]==1); cnd[l]={L[id],id}; ly=ans[id].first.first,lx=ans[id].first.second,ry=ans[id].second.first,rx=ans[id].second.second; if(ly==ry)FOR(j,lx,rx+1) g[ly][j]^=1,sub+=g[ly][j]?-1:1; else FOR(i,ly,ry+1) g[i][lx]^=1,sub+=g[i][lx]?-1:1; } sort(cnd.begin(),cnd.begin()+num,greater<pint>()); rep(i,num){ tmp[i]=cnt%2?calc2(cnd[i].first):calc1(cnd[i].first); } if(sub>=0){ memcpy(g2,g,sizeof(g)); rep(i,num)ans[cnd[i].second]=tmp[i]; } else memcpy(g,g2,sizeof(g2)); ++cnt; } rep(i,k){ cout<<ans[i].first.first+1<<" "<<ans[i].first.second+1<<" "<<ans[i].second.first+1<<" "<<ans[i].second.second+1<<endl; } return 0; }