結果
問題 | No.1604 Swap Sort:ONE |
ユーザー | 👑Zack Ni |
提出日時 | 2021-07-17 13:28:25 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 3 ms / 2,000 ms |
コード長 | 5,684 bytes |
コンパイル時間 | 1,790 ms |
コンパイル使用メモリ | 179,216 KB |
実行使用メモリ | 7,620 KB |
最終ジャッジ日時 | 2024-07-07 01:15:15 |
合計ジャッジ時間 | 2,598 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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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 | 2 ms
6,812 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | AC | 2 ms
6,940 KB |
testcase_03 | AC | 2 ms
6,940 KB |
testcase_04 | AC | 1 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 2 ms
6,940 KB |
testcase_07 | AC | 3 ms
6,944 KB |
testcase_08 | AC | 2 ms
6,940 KB |
testcase_09 | AC | 3 ms
6,944 KB |
testcase_10 | AC | 2 ms
6,940 KB |
testcase_11 | AC | 2 ms
6,944 KB |
testcase_12 | AC | 2 ms
6,944 KB |
testcase_13 | AC | 2 ms
6,944 KB |
testcase_14 | AC | 2 ms
6,948 KB |
testcase_15 | AC | 2 ms
6,944 KB |
testcase_16 | AC | 2 ms
6,944 KB |
testcase_17 | AC | 2 ms
6,944 KB |
testcase_18 | AC | 2 ms
6,944 KB |
testcase_19 | AC | 2 ms
6,944 KB |
testcase_20 | AC | 2 ms
7,620 KB |
testcase_21 | AC | 2 ms
6,944 KB |
testcase_22 | AC | 2 ms
6,940 KB |
testcase_23 | AC | 2 ms
6,940 KB |
testcase_24 | AC | 2 ms
6,940 KB |
testcase_25 | AC | 2 ms
6,944 KB |
testcase_26 | AC | 2 ms
6,944 KB |
ソースコード
#pragma GCC optimize ("Ofast") #include<bits/stdc++.h> using namespace std; template<class T> struct cLtraits_identity{ using type = T; } ; template<class T> using cLtraits_try_make_signed = typename conditional< is_integral<T>::value, make_signed<T>, cLtraits_identity<T> >::type; template <class S, class T> struct cLtraits_common_type{ using tS = typename cLtraits_try_make_signed<S>::type; using tT = typename cLtraits_try_make_signed<T>::type; using type = typename common_type<tS,tT>::type; } ; void*wmem; char memarr[96000000]; template<class S, class T> inline auto min_L(S a, T b) -> typename cLtraits_common_type<S,T>::type{ return (typename cLtraits_common_type<S,T>::type) a <= (typename cLtraits_common_type<S,T>::type) b ? a : b; } template<class T> inline void walloc1d(T **arr, int x, void **mem = &wmem){ static int skip[16] = {0, 15, 14, 13, 12, 11, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1}; (*mem) = (void*)( ((char*)(*mem)) + skip[((unsigned long long)(*mem)) & 15] ); (*arr)=(T*)(*mem); (*mem)=((*arr)+x); } template<class T> inline void walloc1d(T **arr, int x1, int x2, void **mem = &wmem){ walloc1d(arr, x2-x1, mem); (*arr) -= x1; } inline int my_getchar(){ static char buf[1048576]; static int s = 1048576; static int e = 1048576; if(s == e && e == 1048576){ e = fread(buf, 1, 1048576, stdin); s = 0; } if(s == e){ return EOF; } return buf[s++]; } inline void rd(int &x){ int k; int m=0; x=0; for(;;){ k = my_getchar(); if(k=='-'){ m=1; break; } if('0'<=k&&k<='9'){ x=k-'0'; break; } } for(;;){ k = my_getchar(); if(k<'0'||k>'9'){ break; } x=x*10+k-'0'; } if(m){ x=-x; } } struct MY_WRITER{ char buf[1048576]; int s; int e; MY_WRITER(){ s = 0; e = 1048576; } ~MY_WRITER(){ if(s){ fwrite(buf, 1, s, stdout); } } } ; MY_WRITER MY_WRITER_VAR; void my_putchar(int a){ if(MY_WRITER_VAR.s == MY_WRITER_VAR.e){ fwrite(MY_WRITER_VAR.buf, 1, MY_WRITER_VAR.s, stdout); MY_WRITER_VAR.s = 0; } MY_WRITER_VAR.buf[MY_WRITER_VAR.s++] = a; } inline void wt_L(char a){ my_putchar(a); } inline void wt_L(int x){ int s=0; int m=0; char f[10]; if(x<0){ m=1; x=-x; } while(x){ f[s++]=x%10; x/=10; } if(!s){ f[s++]=0; } if(m){ my_putchar('-'); } while(s--){ my_putchar(f[s]+'0'); } } inline void wt_L(unsigned x){ int s=0; char f[10]; while(x){ f[s++]=x%10; x/=10; } if(!s){ f[s++]=0; } while(s--){ my_putchar(f[s]+'0'); } } inline void wt_L(long long x){ int s=0; int m=0; char f[20]; if(x<0){ m=1; x=-x; } while(x){ f[s++]=x%10; x/=10; } if(!s){ f[s++]=0; } if(m){ my_putchar('-'); } while(s--){ my_putchar(f[s]+'0'); } } inline void wt_L(unsigned long long x){ int s=0; char f[21]; while(x){ f[s++]=x%10; x/=10; } if(!s){ f[s++]=0; } while(s--){ my_putchar(f[s]+'0'); } } int WRITER_DOUBLE_DIGIT = 15; inline int writerDigit_double(){ return WRITER_DOUBLE_DIGIT; } inline void writerDigit_double(int d){ WRITER_DOUBLE_DIGIT = d; } inline void wt_L(double x){ const int d = WRITER_DOUBLE_DIGIT; int k; int r; double v; if(x!=x || (x==x+1 && x==2*x)){ my_putchar('E'); my_putchar('r'); my_putchar('r'); return; } if(x < 0){ my_putchar('-'); x = -x; } x += 0.5 * pow(0.1, d); r = 0; v = 1; while(x >= 10*v){ v *= 10; r++; } while(r >= 0){ r--; k = floor(x / v); if(k >= 10){ k = 9; } if(k <= -1){ k = 0; } x -= k * v; v *= 0.1; my_putchar(k + '0'); } if(d > 0){ my_putchar('.'); v = 1; for(r=(0);r<(d);r++){ v *= 0.1; k = floor(x / v); if(k >= 10){ k = 9; } if(k <= -1){ k = 0; } x -= k * v; my_putchar(k + '0'); } } } inline void wt_L(const char c[]){ int i=0; for(i=0;c[i]!='\0';i++){ my_putchar(c[i]); } } inline void wt_L(string &x){ int i=0; for(i=0;x[i]!='\0';i++){ my_putchar(x[i]); } } template<class T> long long inversion(int N, T A[], void *mem=wmem){ int i; int j; int k; int p; int n1; int n2; T*x; T*y; long long res = 0; walloc1d(&x, N, &mem); walloc1d(&y, N, &mem); for(i=(0);i<(N);i++){ x[i] = A[i]; } for(k=0;k<N;k+=4){ n1 =min_L(4, N-k); for(j=n1;j;j--){ int mh1PDLat = j; for(i=(1);i<(mh1PDLat);i++){ if(x[k+i-1] > x[k+i]){ swap(x[k+i-1], x[k+i]); res++; } } } } p = 4; while(p<N){ for(k=0;k<N;k+=2*p){ n1 =min_L(p, N-k); n2 =min_L(p, N-k-n1); i = j = 0; while(i<n1 && j<n2){ if(x[k+i] <= x[k+n1+j]){ y[k+i+j] = x[k+i]; i++; } else{ y[k+i+j] = x[k+n1+j]; res += n1-i; j++; } } while(i<n1){ y[k+i+j] = x[k+i]; i++; } while(j<n2){ y[k+i+j] = x[k+n1+j]; j++; } } swap(x,y); p *= 2; } return res; } int n; int p[3110]; int r[3110]; int main(){ int i; wmem = memarr; rd(n); { int PiIOrLma; for(PiIOrLma=(0);PiIOrLma<(n);PiIOrLma++){ rd(p[PiIOrLma]);p[PiIOrLma] += (-1); } } for(i=(0);i<(n);i++){ r[p[i]] = i; } wt_L(inversion(n, r)); wt_L('\n'); return 0; } // cLay version 20210405-1 // --- original code --- // //no-unlocked // int n, p[3110], r[]; // { // rd(n, (p--)(n)); // rep(i, n) r[p[i]] = i; // wt(inversion(n, r)); // }