結果
問題 | No.875 Range Mindex Query |
ユーザー | LayCurse |
提出日時 | 2019-09-06 21:23:36 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 77 ms / 2,000 ms |
コード長 | 8,432 bytes |
コンパイル時間 | 2,803 ms |
コンパイル使用メモリ | 218,028 KB |
実行使用メモリ | 7,552 KB |
最終ジャッジ日時 | 2024-06-24 16:15:44 |
合計ジャッジ時間 | 4,299 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge3 |
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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
6,816 KB |
testcase_01 | AC | 2 ms
6,940 KB |
testcase_02 | AC | 2 ms
6,944 KB |
testcase_03 | AC | 2 ms
6,944 KB |
testcase_04 | AC | 2 ms
6,940 KB |
testcase_05 | AC | 2 ms
6,940 KB |
testcase_06 | AC | 3 ms
6,940 KB |
testcase_07 | AC | 2 ms
6,940 KB |
testcase_08 | AC | 3 ms
6,940 KB |
testcase_09 | AC | 2 ms
6,940 KB |
testcase_10 | AC | 3 ms
6,940 KB |
testcase_11 | AC | 77 ms
7,552 KB |
testcase_12 | AC | 61 ms
6,940 KB |
testcase_13 | AC | 53 ms
7,552 KB |
testcase_14 | AC | 53 ms
7,552 KB |
testcase_15 | AC | 75 ms
7,552 KB |
testcase_16 | AC | 48 ms
7,552 KB |
testcase_17 | AC | 49 ms
7,552 KB |
testcase_18 | AC | 49 ms
7,552 KB |
ソースコード
#pragma GCC optimize ("Ofast") #include<bits/stdc++.h> using namespace std; void *wmem; 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); } inline void rd(int &x){ int k, m=0; x=0; for(;;){ k = getchar_unlocked(); if(k=='-'){ m=1; break; } if('0'<=k&&k<='9'){ x=k-'0'; break; } } for(;;){ k = getchar_unlocked(); if(k<'0'||k>'9'){ break; } x=x*10+k-'0'; } if(m){ x=-x; } } inline void wt_L(char a){ putchar_unlocked(a); } inline void wt_L(int x){ char f[10]; int m=0, s=0; if(x<0){ m=1; x=-x; } while(x){ f[s++]=x%10; x/=10; } if(!s){ f[s++]=0; } if(m){ putchar_unlocked('-'); } while(s--){ putchar_unlocked(f[s]+'0'); } } template<class S, class T> inline S chmin(S &a, T b){ if(a>b){ a=b; } return a; } template<class T> struct segtree{ T *addval, *fixval, *mn, *sum; char *fixed; int N, logN, *mnind; void malloc(int maxN, int once = 0){ int i; for(i=1;i<maxN;i*=2){ ; } sum = (T*)std::malloc(sizeof(T)*2*i); mn = (T*)std::malloc(sizeof(T)*2*i); mnind = (int*)std::malloc(sizeof(T)*2*i); fixval = (T*)std::malloc(sizeof(T)*i); addval = (T*)std::malloc(sizeof(T)*i); fixed = (char*)std::malloc(sizeof(char)*i); if(once){ setN(maxN); } } void walloc(int maxN, int once = 0, void **mem = &wmem){ int i; for(i=1;i<maxN;i*=2){ ; } walloc1d(&sum, 2*i, mem); walloc1d(&mn, 2*i, mem); walloc1d(&mnind, 2*i, mem); walloc1d(&fixval, i, mem); walloc1d(&addval, i, mem); walloc1d(&fixed, i, mem); if(once){ setN(maxN); } } void free(void){ std::free(sum); std::free(mn); std::free(mnind); std::free(fixval); std::free(addval); std::free(fixed); } T& operator[](int i){ return sum[N+i]; } void setN(int n, int zerofill = 1, int dobuild = 1){ int i; for(i=1,logN=0;i<n;i*=2,logN++){ ; } N = i; if(zerofill){ for(i=0;i<(N);i++){ sum[N+i] = 0; } } if(dobuild){ build(); } } void build(void){ int i; for(i=0;i<(N);i++){ mn[N+i] = sum[N+i]; mnind[N+i] = i; } for(i=N-1;i;i--){ sum[i] = sum[2*i] + sum[2*i+1]; if(mn[2*i] <= mn[2*i+1]){ mn[i] = mn[2*i]; mnind[i] = mnind[2*i]; } else{ mn[i] = mn[2*i+1]; mnind[i] = mnind[2*i+1]; } } for(i=(1);i<(N);i++){ fixed[i] = 0; } for(i=(1);i<(N);i++){ addval[i] = 0; } } inline void push_one(int a, int sz, int st){ if(fixed[a]){ if(sz > 1){ fixed[a*2] = fixed[a*2+1] = 1; fixval[a*2] = fixval[a*2+1] = fixval[a]; sum[a*2] = sum[a*2+1] = sz * fixval[a]; mn[a*2] = mn[a*2+1] = fixval[a]; mnind[a*2] = st; mnind[a*2+1] = st + sz; } else{ sum[a*2] = sum[a*2+1] = sz * fixval[a]; mn[a*2] = mn[a*2+1] = fixval[a]; mnind[a*2] = st; mnind[a*2+1] = st + sz; } fixed[a] = 0; addval[a] = 0; return; } if(addval[a] != 0){ if(sz > 1){ if(fixed[a*2]){ fixval[a*2] += addval[a]; } else{ addval[a*2] += addval[a]; } if(fixed[a*2+1]){ fixval[a*2+1] += addval[a]; } else{ addval[a*2+1] += addval[a]; } sum[a*2] += sz * addval[a]; sum[a*2+1] += sz * addval[a]; mn[a*2] += addval[a]; mn[a*2+1] += addval[a]; } else{ sum[a*2] += sz * addval[a]; sum[a*2+1] += sz * addval[a]; mn[a*2] += addval[a]; mn[a*2+1] += addval[a]; } addval[a] = 0; return; } } inline void push(int a){ int aa=a - N, i, nd, st, sz; for(i=logN;i;i--){ nd = a>>i; sz = 1<<(i-1); st = 2 * sz * (aa>>i); push_one(nd, sz, st); } } inline void build(int a){ int st=a - N, sz=1; while(a > 1){ if(a%2){ st += sz; } a /= 2; sz *= 2; if(fixed[a]){ sum[a] = sz * fixval[a]; mn[a] = fixval[a]; } else{ sum[a] = sum[a*2] + sum[a*2+1]; if(mn[a*2] <= mn[a*2+1]){ mn[a] = mn[a*2]; mnind[a] = mnind[a*2]; } else{ mn[a] = mn[a*2+1]; mnind[a] = mnind[a*2+1]; } if(addval[a] != 0){ mn[a] += addval[a]; sum[a] += sz * addval[a]; } } } } inline void change(int a, int b, T val){ int aa, bb, st_a=a, st_b=b, sz=1; if(a >= b){ return; } aa = (a += N); bb = (b += N); push(a); push(b-1); if(a%2){ sum[a] = mn[a] = val; a++; st_a += sz; } if(b%2){ b--; st_b -= sz; sum[b] = mn[b] = val; } a /= 2; b /= 2; while(a < b){ sz *= 2; if(a%2){ fixed[a]=1; fixval[a]=val; sum[a] = sz * val; mn[a] = val; mnind[a] = st_a; a++; st_a += sz; } if(b%2){ b--; st_b -= sz; fixed[b]=1; fixval[b]=val; sum[b] = sz * val; mn[b] = val; mnind[b] = st_b; } a /= 2; b /= 2; } build(aa); build(bb-1); } inline void add(int a, int b, T val){ int aa, bb, sz=1; if(a >= b){ return; } aa = (a += N); bb = (b += N); push(a); push(b-1); if(a%2){ sum[a] += val; mn[a] += val; a++; } if(b%2){ b--; sum[b] += val; mn[b] += val; } a /= 2; b /= 2; while(a < b){ sz *= 2; if(a%2){ if(fixed[a]){ fixval[a] += val; } else{ addval[a] += val; } sum[a] += sz * val; mn[a] += val; a++; } if(b%2){ b--; if(fixed[b]){ fixval[b] += val; } else{ addval[b] += val; } sum[b] += sz * val; mn[b] += val; } a /= 2; b /= 2; } build(aa); build(bb-1); } inline pair<T,int> getMin(int a, int b){ int sz=1; pair<T,int> res; a += N; b += N; push(a); push(b-1); res.first = numeric_limits<T>::max(); res.second = -1; while(a < b){ if(a%2){ chmin(res, make_pair(mn[a], mnind[a])); a++; } if(b%2){ b--; chmin(res, make_pair(mn[b], mnind[b])); } a /= 2; b /= 2; } return res; } inline T getMinVal(int a, int b){ return getMin(a,b).first; } inline int getMinInd(int a, int b){ return getMin(a,b).second; } inline T getSum(int a, int b){ T res; int sz=1; a += N; b += N; push(a); push(b-1); res = 0; while(a < b){ if(a%2){ res += sum[a++]; } if(b%2){ res += sum[--b]; } a /= 2; b /= 2; } return res; } } ; char memarr[96000000]; int N; int Q; int A[100000]; int T; int L; int R; int main(){ int KL2GvlyY, i, k; segtree<int> t; wmem = memarr; rd(N); rd(Q); { int Lj4PdHRW; for(Lj4PdHRW=0;Lj4PdHRW<(N);Lj4PdHRW++){ rd(A[Lj4PdHRW]);A[Lj4PdHRW] += (-1); } } t.malloc(N); t.setN(N); for(i=0;i<(N);i++){ t[i] = A[i]; } t.build(); for(KL2GvlyY=0;KL2GvlyY<(Q);KL2GvlyY++){ rd(T); rd(L);L += (-1); rd(R);R += (-1); if(T==1){ swap(A[L], A[R]); t.change(L,L+1,A[L]); t.change(R,R+1,A[R]); } else{ k = t.getMinInd(L, R+1); wt_L(k+1); wt_L('\n'); } } return 0; } // cLay varsion 20190902-1 // --- original code --- // int N, Q, A[1d5], T, L, R; // { // int k; // segtree<int> t; // rd(N,Q,(A--)(N)); // t.malloc(N); // t.setN(N); // rep(i,N) t[i] = A[i]; // t.build(); // rep(Q){ // rd(T,L--,R--); // if(T==1){ // swap(A[L], A[R]); // t.change(L,L+1,A[L]); // t.change(R,R+1,A[R]); // } else { // k = t.getMinInd(L, R+1); // wt(k+1); // } // } // }