Submission #871341

#	Time	Username	Problem	Language	Result	Execution time	Memory
871341		hvmegy	Baloni (COCI15_baloni)	C++17	100 / 100	52 ms	18772 KiB

baloni

// [ нvмegy ]
// OLPCHUYENTIN2023 GOTOHUE
#include <bits/stdc++.h>
using namespace std;
using i64 = long long;
 
#define int long long
#define all(c) c.begin(), c.end()
#ifdef hvmegy
#define dbg(...) logger(#__VA_ARGS__, __VA_ARGS__)
template<typename ...Args>
void logger(string vars, Args&&... values) {
        cerr << "[" << vars << " : ";
        string delim = "";
        (..., (cerr << delim << values, delim = ", "));
        cerr << "]" << '\n'; 
}
#else
#define dbg(...)
#endif
 
mt19937_64 rnd(chrono::steady_clock::now().time_since_epoch().count());
 
int GOTOHUE();
void init(); 
 
int32_t main()
{
        cin.tie(0) -> sync_with_stdio(0); 
        cout << fixed << setprecision(15);
        
        #ifdef hvmegy
        freopen("input.txt", "r", stdin); 
        freopen("output.txt", "w", stdout); 
        freopen("log.txt", "w", stderr);
        #endif



        // =============================
                bool MULTITEST = 0; 
        // =============================
        
        init(); 
        int OLPCHUYENTIN2023 = 1; 
        if (MULTITEST) cin >> OLPCHUYENTIN2023; 
        for (int i = 1; i <= OLPCHUYENTIN2023; i++) {
                if (GOTOHUE()) break;
                #ifdef hvmegy
                        cout << "--ENDTEST--" << '\n';
                        cerr << "--ENDTEST--" << '\n';
                #endif
        }

        #ifdef hvmegy
                cerr << '\n' << clock() * 1000.0 / CLOCKS_PER_SEC << "ms" << '\n';
        #endif

        return 0;
}

void init() { 

}

int GOTOHUE() { 
        int n; 
        cin >> n; 
        vector<int> a(n + 1); 
        for (int i = 1; i <= n; i++) { 
                cin >> a[i]; 
        }
        int ans = 0; 
        vector<int> ck(1e6 + 2); 
        for (int i = 1; i <= n; i++) { 
                if (ck[a[i] + 1]) { 
                        ck[a[i] + 1]--; 
                        ck[a[i]]++; 
                }
                else { 
                        ans++; 
                        ck[a[i]]++; 
                }
        }
        cout << ans << '\n';
        return 0; 
}

• Subtask 1: 100 / 100