Submission #334121

#	Time	Username	Problem	Language	Result	Execution time	Memory
334121		beksultan04	Money (IZhO17_money)	C++14	9 / 100	1 ms	620 KiB

money

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pii pair<int,int>
#define OK puts("OK");
#define fr first
#define sc second
#define ret return
#define scan1(a) scanf("%lld",&a);
#define scan2(a,b) scanf("%lld %lld",&a, &b);
#define scan3(a,b,c) scanf("%lld %lld %lld",&a,&b,&c);
#define all(s) s.begin(),s.end()
#define pb push_back
#define endi puts("");
const int N = 1e6+12,INF=1e9+7;
int q[N],der[4*N];

void update(int v,int l,int r,int x){
    if (l==r)
        der[v]+=1;

    else {
        int m = l+r>>1;
        if (x <= m)
            update((v<<1),l,m,x);
        else
            update((v<<1)+1,m+1,r,x);
        der[v]=der[v*2]+der[v*2+1];
    }
}

int get_ans(int v,int l,int r,int ql,int qr){
    if (r < ql || qr < l )ret 0;
    if (ql <= l && r <= qr)ret der[v];
    int m = l+r>>1;
    ret get_ans(v<<1,l,m,ql,qr)+get_ans((v<<1)+1,m+1,r,ql,qr);
}

main(){
    int n,j,i,ans=0,sum=1,l;
    scan1(n)
    for (i=1;i<=n;++i)scan1(q[i])
    update(1,1,1000000,q[1]);
    l=1;
    for (i=2;i<=n;++i){
        update(1,1,1000000,q[i]);
        if (q[i] < q[i-1]){
            ans++;
            l=i;
        }
        else {
            int x = get_ans(1,1,1000000,q[l],q[i])-get_ans(1,1,1000000,q[l],q[l])-get_ans(1,1,1000000,q[i],q[i]);
            if (q[i] == q[l]){
                x += get_ans(1,1,1000000,q[i],q[i]);
            }
            if (x > i-l-1){
                ans++;
                l = i;
            }
        }


    }

    cout <<ans+1;
}

Compilation message (stderr)

money.cpp: In function 'void update(long long int, long long int, long long int, long long int)':
money.cpp:23:18: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   23 |         int m = l+r>>1;
      |                 ~^~
money.cpp: In function 'long long int get_ans(long long int, long long int, long long int, long long int, long long int)':
money.cpp:35:14: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   35 |     int m = l+r>>1;
      |             ~^~
money.cpp: At global scope:
money.cpp:39:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   39 | main(){
      |      ^
money.cpp: In function 'int main()':
money.cpp:40:11: warning: unused variable 'j' [-Wunused-variable]
   40 |     int n,j,i,ans=0,sum=1,l;
      |           ^
money.cpp:40:21: warning: unused variable 'sum' [-Wunused-variable]
   40 |     int n,j,i,ans=0,sum=1,l;
      |                     ^~~
money.cpp:9:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 | #define scan1(a) scanf("%lld",&a);
      |                  ~~~~~^~~~~~~~~~~
money.cpp:41:5: note: in expansion of macro 'scan1'
   41 |     scan1(n)
      |     ^~~~~
money.cpp:9:23: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 | #define scan1(a) scanf("%lld",&a);
      |                  ~~~~~^~~~~~~~~~~
money.cpp:42:23: note: in expansion of macro 'scan1'
   42 |     for (i=1;i<=n;++i)scan1(q[i])
      |                       ^~~~~

• Subtask 1: 9 / 9
• Subtask 2: 0 / 16
• Subtask 3: 0 / 20
• Subtask 4: 0 / 55