Submission #629933

#	Time	Username	Problem	Language	Result	Execution time	Memory
629933		Karliver	Growing Vegetable is Fun 3 (JOI19_ho_t3)	C++17	0 / 100	1 ms	320 KiB

joi2019_ho_t3

	
#include <bits/stdc++.h>

#define FIXED_FLOAT(x)  std::fixed <<std::setprecision(20) << (x)
#define all(v) (v).begin(), (v).end()
using namespace  std;
#define forn(i,n) for (int i = 0; i < (n); ++i)
#define rforn(i, n) for(int i = (n) - 1;i >= 0;--i)
#define sz(x) (int)x.size()
#define ff first
#define se second
#define mp make_pair
using ll = long long;
int mod = (ll)1e9 + 7;
const int INF = 1e9 + 1;
const int N = 2e5 + 100;
const double eps = 1e-7;
const  long  long inf = 1e18;
template <class T> using V = vector<T>;  
template <class T> using VV = V<V<T>>;  
template<class T, size_t SZ> using AR = array<T, SZ>;
template<class T> using PR = pair<T, T>;
template <typename XPAX>
bool ckma(XPAX &x, XPAX y) {
    return (x < y ? x = y, 1 : 0);
}
template <typename XPAX>
bool ckmi(XPAX &x, XPAX y) {
    return (x > y ? x = y, 1 : 0);
}



void __print(int x) {cerr << x;}
void __print(long x) {cerr << x;}
void __print(long long x) {cerr << x;}
void __print(unsigned x) {cerr << x;}
void __print(unsigned long x) {cerr << x;}
void __print(unsigned long long x) {cerr << x;}
void __print(float x) {cerr << x;}
void __print(double x) {cerr << x;}
void __print(long double x) {cerr << x;}
void __print(char x) {cerr << '\'' << x << '\'';}
void __print(const char *x) {cerr << '\"' << x << '\"';}
void __print(const string &x) {cerr << '\"' << x << '\"';}
void __print(bool x) {cerr << (x ? "true" : "false");}

template<typename T, typename V>
void __print(const pair<T, V> &x) {cerr << '{'; __print(x.first); cerr << ','; __print(x.second); cerr << '}';}
template<typename T>
void __print(const T &x) {int f = 0; cerr << '{'; for (auto &i: x) cerr << (f++ ? "," : ""), __print(i); cerr << "}";}
void _print() {cerr << "]\n";}
template <typename T, typename... V>
void _print(T t, V... v) {__print(t); if (sizeof...(v)) cerr << ", "; _print(v...);}
#define debug(x...) cerr << "[" << #x << "] = ["; _print(x)



void solve() {	
		
	int n;
	cin >> n;
	
	string s;
	cin >> s;
	vector<int> a(n);
	vector<int> pos[4];
	for(int j =0 ;j < n;++j){
		a[j] = (s[j] == 'R' ? 0 : (s[j] == 'G' ? 1 : 2));
		pos[a[j]].push_back(j);
	}
	for(int i = 0;i < 3;++i) {
		if(count(all(a), i) > (n + 1) / 2) {
			cout << "-1\n";
			return;
		}
	}
	int p = 3;
	long long ans = 0;
	vector<int> r;
	for(int j = 0;j < n;++j) {
		int opt = n, f = -1;
		for(int i = 0;i < 3;++i) if(!pos[i].empty()&&p!=i)if(ckmi(opt, pos[i][0])) f = i;
		if(f == -1) {
			int s = 0;
			for(int i =0 ;i < 3;++i) if(size(pos[i]))s = size(pos[i]);
			ans += s * 1ll * s;
			break;
		}
		r.push_back(opt);
		pos[f].erase(pos[f].begin());
		p = f;
	}
	
	for(int j = 0;j < size(r);++j)	
		for(int i = j + 1;i < size(r);++i)
				if(r[j] > r[i])
					ans += 1;

	cout  << ans << '\n';


}
void test_case() {
    int t;
    cin >> t;
    forn(p, t) {

        //cout << "Case #" << p + 1 << ": ";
        solve();
    }
}
int main() {

    ios::sync_with_stdio(false);
    cin.tie(0);

    solve();

}

Compilation message (stderr)

joi2019_ho_t3.cpp: In function 'void solve()':
joi2019_ho_t3.cpp:95:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   95 |  for(int j = 0;j < size(r);++j)
      |                ~~^~~~~~~~~
joi2019_ho_t3.cpp:96:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |   for(int i = j + 1;i < size(r);++i)
      |                     ~~^~~~~~~~~

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