Submission #1105073

#	Time	Username	Problem	Language	Result	Execution time	Memory
1105073		modwwe	Exercise Deadlines (CCO20_day1problem2)	C++17	25 / 25	155 ms	19228 KiB

Main

#pragma GCC optimize("Ofast,unroll-loops")
//#pragma GCC optimize("conserve-stack")
#include<bits/stdc++.h>
#define int long long
#define ll long long
#define down cout<<'\n';
#define debug cout<<" cucuucucuuu",down
#define NHP     ios_base::sync_with_stdio(0);cout.tie(0);cin.tie(0);
#define modwwe  int t;cin>>t; while(t--)
#define bit(i,j) (i>>j&1)
#define sobit(a) __builtin_popcountll(a)
#define task "test"
#define fin(x) freopen(x".inp","r",stdin)
#define fou(x) freopen(x".ans","w",stdout)
#define pb push_back
#define mask(i) (1<<i)
#define checktime   cerr << (double)clock() / CLOCKS_PER_SEC * 1000  << " ms";
using namespace std;
#define getchar_unlocked getchar

inline int scan()
{
    char c = getchar_unlocked();
    int x = 0;
    while (c < '0' || c > '9')
    {
        c = getchar_unlocked();
    }
    while (c >= '0' && c <= '9')
    {
        x = (x << 1) + (x << 3) + c - '0';
        c = getchar_unlocked();
    }
    return x;
};
void phongbeo();
const int inf = 1e9;
const int mod2 = 1e9+7;
const int  mod1 = 998244353;
int add(int x,int y)
{
    if(x+y>=mod2) x-=mod2;
    if(x+y<0) x+=mod2;
    return x+y;
}
struct icd
{
    long double a;
    int b;
};
struct ib
{
    int a;
    int b;
};
struct ic
{
    int a, b, c, d;
};
struct ie
{
    int a, b, c, d, e;

};

int  n, m, s1, s2, s4, s3, sf, k, s5, s6, mx, s7, s8, s9, mx2, res, dem2 = 0, dem = 0, s33, dem3, dem4, mid, l2, r2, center;
int  i, s10, s12,k1,k2,k3,s11,limit,w,l,r,last,root;
int kk,invf;
int el = 19;

main()
{
    if(fopen(task".inp","r"))
    {
        fin(task);
        fou(task);
    }
    NHP
    /// cin>>s1;
///modwwe
    phongbeo();
    // checktime
}
int c[200001];
int a[200001];
set<int> s;
struct IT{
    int t[800001];
void upd(int node,int l,int r,int l1)
 {
       if(l==r)
       {
            t[node]=1;
             return;
       }
       int mid=l+r>>1;
       if(l1<=mid)
        upd(node<<1,l,mid,l1);
        else upd(node<<1|1,mid+1,r,l1);
        t[node]=t[node<<1]+t[node<<1|1];
 }
 int get(int node,int l,int r,int l1,int r1)
  {
       if(l>r1||r<l1||t[node]==0) return 0;
        if(l>=l1&&r<=r1) return t[node];
         int mid=l+r>>1;
          return get(node<<1,l,mid,l1,r1)+get(node<<1|1,mid+1,r,l1,r1);
  }
}st;
void phongbeo()
{
cin>>n;
 for(int i=1;i<=n;i++)
     cin>>a[i],s.insert(i);
     for(int i=n;i>=1;--i)
        {
        auto it=s.upper_bound(a[i]);
         if(it==s.begin()){cout<<-1; exit(0);}
         it=prev(it);
          c[*it]=i;
          s.erase(it);
        }
    for(int i=1;i<=n;i++)
     {
          s4+=st.get(1,1,n,c[i],n)+c[i]-i;
         st.upd(1,1,n,c[i]);
     }
     cout<<s4;
}

Compilation message (stderr)

Main.cpp:71:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   71 | main()
      | ^~~~
Main.cpp: In member function 'void IT::upd(long long int, long long int, long long int, long long int)':
Main.cpp:96:17: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   96 |        int mid=l+r>>1;
      |                ~^~
Main.cpp: In member function 'long long int IT::get(long long int, long long int, long long int, long long int, long long int)':
Main.cpp:106:19: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
  106 |          int mid=l+r>>1;
      |                  ~^~
Main.cpp: In function 'void phongbeo()':
Main.cpp:113:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  113 |  for(int i=1;i<=n;i++)
      |  ^~~
Main.cpp:115:6: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  115 |      for(int i=n;i>=1;--i)
      |      ^~~
Main.cpp: In function 'int main()':
Main.cpp:13:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 | #define fin(x) freopen(x".inp","r",stdin)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~
Main.cpp:75:9: note: in expansion of macro 'fin'
   75 |         fin(task);
      |         ^~~
Main.cpp:14:23: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   14 | #define fou(x) freopen(x".ans","w",stdout)
      |                ~~~~~~~^~~~~~~~~~~~~~~~~~~~
Main.cpp:76:9: note: in expansion of macro 'fou'
   76 |         fou(task);
      |         ^~~

• Subtask 1: 17 / 17
• Subtask 2: 8 / 8