結果

問題 No.2042 RGB Caps
ユーザー tails
提出日時 2022-08-19 23:14:54
言語 C90
(gcc 12.3.0)
結果
AC  
実行時間 4 ms / 2,000 ms
コード長 1,317 bytes
コンパイル時間 1,517 ms
コンパイル使用メモリ 25,344 KB
実行使用メモリ 6,820 KB
最終ジャッジ日時 2024-11-16 01:58:52
合計ジャッジ時間 2,301 ms
ジャッジサーバーID
（参考情報） 		judge1 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 2
other AC * 16
権限があれば一括ダウンロードができます
コンパイルメッセージ
main.c: In function ‘main’:
main.c:53:28: warning: multi-character character constant [-Wmultichar]
   53 |                 unsigned p='BGR';
      |                            ^~~~~
main.c:56:35: warning: multi-character character constant [-Wmultichar]
   56 |                                 p='BRG';
      |                                   ^~~~~
main.c:60:35: warning: multi-character character constant [-Wmultichar]
   60 |                                 p='GRB';
      |                                   ^~~~~
main.c:67:39: warning: multi-character character constant [-Wmultichar]
   67 |                                 if(p=='GRB') p='RGB';
      |                                       ^~~~~
main.c:67:48: warning: multi-character character constant [-Wmultichar]
   67 |                                 if(p=='GRB') p='RGB';
      |                                                ^~~~~
main.c:71:39: warning: multi-character character constant [-Wmultichar]
   71 |                                 if(p=='BRG') p='RBG';
      |                                       ^~~~~
main.c:71:48: warning: multi-character character constant [-Wmultichar]
   71 |                                 if(p=='BRG') p='RBG';
      |                                                ^~~~~
main.c:72:39: warning: multi-character character constant [-Wmultichar]
   72 |                                 if(p=='BGR') p='GBR';
      |                                       ^~~~~
main.c:72:48: warning: multi-character character constant [-Wmultichar]
   72 |                                 if(p=='BGR') p='GBR';
      |                                                ^~~~~
main.c:84:9: warning: implicit declaration of function ‘write’ [-Wimplicit-function-declaration]
   84 |         write(1,wbuf,n);
      |         ^~~~~
main.c:85:9: warning: implicit declaration of function ‘_exit’ [-Wimplicit-function-declaration]
   85 |         _exit(0);
      |         ^~~~~
main.c:85:9: warning: incom

ソースコード

diff #
プレゼンテーションモードにする

#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")
#define rd() ({long _v=0,_c;while(_c=*rp++-48,_c>=0)_v=_v*10+_c;_v;})
#define rep(v,e) for(long v=0;v<e;++v)
#define rep3(v,s,e) for(long v=s;v<e;++v)
typedef unsigned long ulong;
char*mmap();
char wbuf[1<<25];
void radix_sort_aux(unsigned*a,unsigned*b,int n){
    int c[512];
    for(int i=0;i<512;++i){
        c[i]=0;
    }
    for(int i=0;i<n;++i){
        ++c[a[i]&511];
    }
    int t=0;
    for(int i=0;i<512;++i){
        int u=c[i];
        c[i]=t;
        t+=u;
    }
    for(int i=0;i<n;++i){
        b[c[a[i]&511]++]=a[i]>>9|a[i]<<23;
    }
}
void radix_sort(unsigned*a,int n){
    static unsigned b[100000];
    radix_sort_aux(a,b,n);
    radix_sort_aux(b,a,n);
}
unsigned b[100000];
int main(){
    char*rp=mmap(0l,1l<<25,1,2,0,0ll);
    long n=rd();
    long k=rd();
    rep(i,k){
        long a=rd();
        long c=*rp;
        rp+=2;
        b[i]=c<<18|a;
    }
    radix_sort(b,k);
    char*wp=wbuf;
    long j=0;
    rep3(i,1,n+1){
        unsigned p='BGR';
        if(b[j]>>14==i){
            if((char)b[j]=='G'){
                p='BRG';
            }
            else
            if((char)b[j]=='B'){
                p='GRB';
            }
            ++j;
        }
        ++i;
        if(b[j]>>14==i){
            if((char)b[j]=='G'){
                if(p=='GRB') p='RGB';
            }
            else
            if((char)b[j]=='B'){
                if(p=='BRG') p='RBG';
                if(p=='BGR') p='GBR';
            }
            ++j;
        }
        ++i;
        if(b[j]>>14==i){
            ++j;
        }
        *(unsigned*)wp=p;
        wp+=3;
    }
    write(1,wbuf,n);
    _exit(0);
}
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