제출 #914963

#제출 시각아이디문제언어결과실행 시간메모리
914963GabrielArranging Shoes (IOI19_shoes)C++17
50 / 100
1094 ms12632 KiB
#include "shoes.h" #include "bits/stdc++.h" using namespace std; bool Ordenado(vector<int> s){ bool S_ = 1; for(long long i = 0; i < (long long)s.size(); i += 2){ if(!(s[i] < 0 and s[i + 1] == -s[i])) S_ = 0; cout<<s[i]<<" "<<s[i + 1]<<" "; } cout<<"\n"; return S_; } vector<long long> _rbol; vector<long long> Jaja; vector<long long> m; void Crear(long long Izquierda, long long Derecha, long long Posici_n){ if(Izquierda == Derecha){ _rbol[Posici_n] = m[Izquierda]; Jaja[Izquierda] = Posici_n; } else { long long Promedio = (Izquierda + Derecha) / 2; Crear(Izquierda, Promedio, Posici_n * 2); Crear(Promedio + 1, Derecha, Posici_n * 2 + 1); _rbol[Posici_n] = _rbol[Posici_n * 2] + _rbol[Posici_n * 2 + 1]; } } long long Consulta(long long Izquierda, long long Derecha, long long Posici_n, long long Inicio, long long Final){ if(Izquierda >= Inicio and Derecha <= Final) return _rbol[Posici_n]; else if(Izquierda > Final or Derecha < Inicio) return 0; else { long long Promedio = (Izquierda + Derecha) / 2; return Consulta(Izquierda, Promedio, Posici_n * 2, Inicio, Final) + Consulta(Promedio + 1, Derecha, Posici_n * 2 + 1, Inicio, Final); } } void Actualizar(long long Posici_n, long long Valor, long long Original){ if(Posici_n == 0) return; if(Posici_n == Original) _rbol[Posici_n] = Valor; else _rbol[Posici_n] = _rbol[Posici_n * 2] + _rbol[Posici_n * 2 + 1]; Actualizar(Posici_n / 2, Valor, Original); } long long count_swaps(vector<int> s){ long long n = s.size(); /*if(n == 2){ if(s[0] < 0) return 0; else return 1; } else if(n <= 2222222){*/ /*long long Contador = 0; for(long long i = 0; i < n; i++){ if(i % 2 == 0){ if(s[i] > 0){ for(long long j = i; j < n; j++){ if(s[j] == -s[i]){ for(long long k = j; k > i; k--){ swap(s[k], s[k - 1]); Contador++; } break; } } } } else { if(!(s[i] == -s[i - 1] and s[i] > 0)){ for(long long j = i; j < n; j++){ if(s[j] == -s[i - 1]){ for(long long k = j; k > i; k--){ swap(s[k], s[k - 1]); Contador++; } break; } } } } } return Contador;*/ m.assign(n, 1); Jaja.assign(n, 0); _rbol.assign(n * 4, 0); n--; Crear(0, n, 1); long long Contador = 0; for(long long i = 0; i <= n; i++){ if(m[i] == 1){ /*if(i % 2 == 0){ if(s[i] > 0){*/ for(long long j = i + 1; j <= n; j++){ if(m[j] == 1){ if(s[j] == -s[i]){ m[j] = 0; Actualizar(Jaja[j], 0, Jaja[j]); Contador += Consulta(0, n, 1, i, j - 1); if(s[i] < 0) Contador--; //cout<<i<<" "<<j<<" "<<Contador<<"\n"; break; } } } /*} } else { if(!(s[i] == -s[i - 1] and s[i] > 0)){ for(long long j = i; j <= n; j++){ if(m[i] == 1){ if(s[j] == -s[i - 1]){ m[i] = 0; Actualizar(Jaja[i], 0, Jaja[i]); Contador += Consulta(0, n, 1, i, j - 1); break; } } } } }*/ } m[i] = 0; Actualizar(Jaja[i], 0, Jaja[i]); } return Contador; /*} else { n /= 2; return n * (n - 1) / 2; }*/ }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...