oj.uz

Submission #704094

# Submission time Handle Problem Language Result Execution time Memory
704094 2023-03-01T14:38:34 Z 1075508020060209tc Growing Vegetable is Fun 3 (JOI19_ho_t3) C++14
0 / 100
 8 ms 8360 KB 
//#pragma GCC optimize("O3")
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define X first
#define Y second
int lowbit(int x){return x&-x;}
int bit[500005];
int upd(int pl,int v){
while(pl<=500000){
    bit[pl]+=v;
    pl+=lowbit(pl);
}
}
int qsum(int x){
int ret=0;
while(x){
    ret+=bit[x];
    x-=lowbit(x);
}
return ret;
}

vector<int>pr;
vector<int>gr;
vector<int>yr;


int n;
string s;




signed main(){
cin>>n>>s;
s="*"+s;
for(int i=1;i<=n;i++){
    if(s[i]=='R'){
        pr.push_back(i);
    }
    if(s[i]=='G'){
        gr.push_back(i);
    }
}
if(pr.size()>=gr.size()+2){
    cout<<-1<<endl;
    return 0;
}
if(gr.size()>=pr.size()+2){
    cout<<-1<<endl;
    return 0;
}
int fans=1e16;
if(gr.size()>=pr.size()){
    int ans=0;
    for(int i=1;i<=n;i++){
        if(i%2==1){
            int pl=gr[(i+1)/2-1];
            ans=pl-i+qsum(n)-qsum(pl);
            upd(pl,1);
        }else{
            int pl=pr[i/2-1];
            ans=pl-i+qsum(n)-qsum(pl);
            upd(pl,1);
        }
    }
    fans=ans;
}
for(int i=1;i<=500000;i++){bit[i]=0;}
if(gr.size()<=pr.size()){
    int ans=0;
    for(int i=1;i<=n;i++){
        if(i%2==0){
            int pl=gr[(i+1)/2-1];
            ans=pl-i+qsum(n)-qsum(pl);
            upd(pl,1);
        }else{
            int pl=pr[i/2-1];
            ans=pl-i+qsum(n)-qsum(pl);
            upd(pl,1);
        }
    }
    fans=min(fans,ans);
}
cout<<fans;

}

Compilation message

joi2019_ho_t3.cpp: In function 'long long int upd(long long int, long long int)':
joi2019_ho_t3.cpp:14:1: warning: no return statement in function returning non-void [-Wreturn-type]
   14 | }
      | ^

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 8276 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #2
0 / 55.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 8276 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #3
0 / 15.0

# Verdict Execution time Memory Grader output
1 Runtime error 8 ms 8360 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 25.0

# Verdict Execution time Memory Grader output
1 Runtime error 6 ms 8276 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -