Submission #1107407

#	Time	Username	Problem	Language	Result	Execution time	Memory
1107407		vjudge1	Growing Vegetable is Fun 3 (JOI19_ho_t3)	C++17	15 / 100	1 ms	552 KiB

joi2019_ho_t3

#include <bits/stdc++.h>
#define boost ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define int long long
using namespace std;
const int N=2e5+5;
const int inf=1e9;
const int mod=1e9+7;
const int N1=1e6+1;
vector<int>v;
vector<int>v1;
struct edge{
    int v,time;
};
int dp[1001];
signed main(){
 //freopen("input.txt", "r", stdin);
  //freopen("output.txt", "w", stdout);

    int n;
    cin>>n;
    string s;
    cin>>s;
    int cnt=0;
    int cnt1=0;
    for(int i=1;i<=n;i++){
        if(s[i-1]=='R'){
            cnt++;
        }else{
            cnt1++;
        }
    }
    if(n%2==0&&abs(cnt-cnt1)!=0||n%2==1&&abs(cnt-cnt1)!=1){
        cout<<"-1";
        return 0;
    }
    int j=2;
    int l=1;
    int ans1=0;
    int ans2=0;
    for(int i=1;i<=n;i++){
        if(s[i-1]=='R'){
            ans1+=abs(j-i);
            ans2+=abs(l-i);
            l+=2;
            j+=2;
        }
    }
    int cnt3=(n+1)/2;
    if(cnt!=cnt3){
        ans2=inf;
    }
    int cnt4=n/2;
    if(cnt4!=cnt){
        ans1=inf;
    }
    cout<<min(ans1,ans2);
}

Compilation message (stderr)

joi2019_ho_t3.cpp: In function 'int main()':
joi2019_ho_t3.cpp:32:14: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   32 |     if(n%2==0&&abs(cnt-cnt1)!=0||n%2==1&&abs(cnt-cnt1)!=1){
      |        ~~~~~~^~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 55
• Subtask 3: 15 / 15
• Subtask 4: 0 / 25