제출 #1167870

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1167870		mychecksedad	Aliens (IOI16_aliens)	C++20	컴파일 에러	0 ms	0 KiB

aliens

/* Author : Mychecksdead  */
#include<bits/stdc++.h>
#include"aliens.h"
using namespace std;
#define ll long long int
#define MOD (1000000000+7)
#define MOD1 (998244353)
#define pb push_back
#define all(x) x.begin(), x.end()
#define en cout << '\n'
#define ff first
#define ss second
#define pii pair<int,int>
#define vi vector<int>
const int N = 2e5+100, M = 1e5+10, K = 105, MX = 30;
const ll INF = 1e18;

struct P{
  ll m; double b; ll idx, num_k;
  double eval(double x){
    return x*m + b;
  }
};

double intersection(P x, P y){
  return (x.b - y.b) / (y.m - x.m);
}

struct CH{
  vector<P> C;
  void insert(double c, ll m, int idx, int numk){
    P x = {m, c, idx, numk};
    if(C.size() && C.back().m == x.m && C.back().b < x.b) return;
    while(C.size() && C.back().m == x.m && C.back().b >= x.b) C.pop_back();
    while(C.size() > 1 && (x.eval(intersection(C.back(), C[int(C.size())-2])) <= C.back().eval(intersection(C.back(), C[int(C.size())-2])))) 
      C.pop_back();
    C.pb(x);
  }
  P get(ll fi){
    if(C.size() == 1) return C[0]; 
    P RES = C[0];
    int l = 1, r = int(C.size()) - 1;
    while(l <= r){
      int m = l+r>>1;
      double pos = intersection(C[m-1], C[m]);
      if(fi <= pos){
        if(RES.eval(fi) > C[m-1].eval(fi)) RES = C[m-1];
        r = m - 1;
      }else{
        if(RES.eval(fi) > C[m].eval(fi)) RES = C[m];
        l = m + 1;
      }
    }
    for(int j = max(l-1, 0); j < min(int(C.size()), r+1);++j){
      if(RES.eval(fi) > C[j].eval(fi)) RES = C[j];
    }
    return RES;
  }
};


int n, m, k;
array<ll, 2> a[N];
ll go[2*N];
vector<ll> val;

pair<double, int> f(double cost){
  CH cht;
  cht.insert(go[0]*go[0], -2*go[0], 0, 0);
  double ans = INF;
  int num_k = 0;
  
  for(ll i = 1; i <= m; ++i){
    auto p = cht.get(val[i]);
    double dp = p.eval(val[i]) + val[i] * val[i] + cost;
    ll best = go[p.idx];
    //cout << i << ' ' << j  << ' ' << dp[i][j] << ' ' << best << ' ';
    if(go[i] == MOD){
      if(ans > dp){
        ans = dp;
        num_k = p.num_k + 1;
      }else if(ans == dp) num_k = min(num_k, p.num_k + 1);
    }
    best = max(best, (go[i]));
    if(go[i] < val[i]){
      dp -= (best - val[i]) * (best - val[i]);
      dp += go[i] * go[i];
      cht.insert(dp, -2*go[i], i, p.num_k + 1);
    }
    //cout << i << ' ' << j << ' ' << dp[i][j] << '\n';
  }

  return pair<double, int>{ans, num_k};
}

ll take_photos(int nn, int mm, int kk, vector<int> r, vi c){
  n=nn,m=mm,k=kk;
  for(int i=0;i<n;++i){ a[i][0]=r[i],a[i][1]=c[i]; }
/*void solve(){
  
  cin >> n >> m >> k;
  for(int i = 0; i < n; ++i) cin >> a[i][0] >> a[i][1];
  */
  for(int i = 0; i < n; ++i){
    if(a[i][0] > a[i][1]){
      swap(a[i][0], a[i][1]);
    }
    val.pb(a[i][0]), val.pb(a[i][1]+1);
    //val.pb(a[i][1]);
    //val.pb(a[i][0] + 1);
  }
  val.pb(0);
  sort(all(val));
  val.erase(unique(all(val)), val.end());
  sort(a, a+n, [&](const array<ll,2> &x, const array<ll, 2> &y){
    return array<ll,2>{x[1],x[0]}<array<ll,2>{y[1],y[0]};
  });
  //for(int i = 0; i < n; ++i) cout << a[i][0] << ' ' << a[i][1] << '\n';
  ll mn = MOD;
  int ptr = n - 1;
  m = int(val.size()) - 1;
  for(int i = m; i >= 0; --i){
    while(ptr >= 0 && a[ptr][1] >= val[i]){
      mn = min(mn, a[ptr][0]);
      --ptr;
    }
    go[i] = mn;
  }
  //for(int j = 0; j <= m; ++j) cout << go[j] << ' '; en;
  ll ans = INF;
  double L = 0, R = 1e12;
  while(L+0.0001<R){
    double m = (L+R)/2;
    auto [cost, num_k] = f(m);
    //cout << cost << ' ' << num_k << ' ' << m << '\n';
    if(num_k <= k){
      ans = min(ans, (ll)(cost - num_k * m));
      R = m ;
    }else{
      L = m ;
    }
  }
  return ans;
}
/*
int main(){
  cin.tie(0); ios::sync_with_stdio(0);
  int tt = 1, aa;
  // freopen("in.txt", "r", stdin);
  // freopen("out.txt", "w", stdout);
  while(tt--){
   solve();
  }
  cerr<<"time taken : "<<(float)clock()/CLOCKS_PER_SEC<<" seconds\n";
  return 0;
} */

컴파일 시 표준 에러 (stderr) 메시지

aliens.cpp: In function 'std::pair<double, int> f(double)':
aliens.cpp:82:38: error: no matching function for call to 'min(int&, long long int)'
   82 |       }else if(ans == dp) num_k = min(num_k, p.num_k + 1);
      |                                   ~~~^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/specfun.h:45,
                 from /usr/include/c++/11/cmath:1935,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
                 from aliens.cpp:2:
/usr/include/c++/11/bits/stl_algobase.h:230:5: note: candidate: 'template<class _Tp> constexpr const _Tp& std::min(const _Tp&, const _Tp&)'
  230 |     min(const _Tp& __a, const _Tp& __b)
      |     ^~~
/usr/include/c++/11/bits/stl_algobase.h:230:5: note:   template argument deduction/substitution failed:
aliens.cpp:82:38: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   82 |       }else if(ans == dp) num_k = min(num_k, p.num_k + 1);
      |                                   ~~~^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/bits/specfun.h:45,
                 from /usr/include/c++/11/cmath:1935,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:41,
                 from aliens.cpp:2:
/usr/include/c++/11/bits/stl_algobase.h:278:5: note: candidate: 'template<class _Tp, class _Compare> constexpr const _Tp& std::min(const _Tp&, const _Tp&, _Compare)'
  278 |     min(const _Tp& __a, const _Tp& __b, _Compare __comp)
      |     ^~~
/usr/include/c++/11/bits/stl_algobase.h:278:5: note:   template argument deduction/substitution failed:
aliens.cpp:82:38: note:   deduced conflicting types for parameter 'const _Tp' ('int' and 'long long int')
   82 |       }else if(ans == dp) num_k = min(num_k, p.num_k + 1);
      |                                   ~~~^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from aliens.cpp:2:
/usr/include/c++/11/bits/stl_algo.h:3449:5: note: candidate: 'template<class _Tp> constexpr _Tp std::min(std::initializer_list<_Tp>)'
 3449 |     min(initializer_list<_Tp> __l)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3449:5: note:   template argument deduction/substitution failed:
aliens.cpp:82:38: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   82 |       }else if(ans == dp) num_k = min(num_k, p.num_k + 1);
      |                                   ~~~^~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/c++/11/string:52,
                 from /usr/include/c++/11/bits/locale_classes.h:40,
                 from /usr/include/c++/11/bits/ios_base.h:41,
                 from /usr/include/c++/11/ios:42,
                 from /usr/include/c++/11/istream:38,
                 from /usr/include/c++/11/sstream:38,
                 from /usr/include/c++/11/complex:45,
                 from /usr/include/c++/11/ccomplex:39,
                 from /usr/include/x86_64-linux-gnu/c++/11/bits/stdc++.h:54,
                 from aliens.cpp:2:
/usr/include/c++/11/bits/stl_algo.h:3455:5: note: candidate: 'template<class _Tp, class _Compare> constexpr _Tp std::min(std::initializer_list<_Tp>, _Compare)'
 3455 |     min(initializer_list<_Tp> __l, _Compare __comp)
      |     ^~~
/usr/include/c++/11/bits/stl_algo.h:3455:5: note:   template argument deduction/substitution failed:
aliens.cpp:82:38: note:   mismatched types 'std::initializer_list<_Tp>' and 'int'
   82 |       }else if(ans == dp) num_k = min(num_k, p.num_k + 1);
      |                                   ~~~^~~~~~~~~~~~~~~~~~~~
aliens.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~
aliens_c.h:1:9: warning: #pragma once in main file
    1 | #pragma once
      |         ^~~~