Submission #109450

#	Time	Username	Problem	Language	Result	Execution time	Memory
109450		wasyl	Bitaro the Brave (JOI19_ho_t1)	C++11	100 / 100	89 ms	9124 KiB

joi2019_ho_t1

    #pragma GCC optimize("O3")
    /*{{{*/
    #include <bits/stdc++.h>
    #ifdef LOCAL
    int c_ = 0;
    #define cout (c_?cerr:cout)
    #define debug(...) \
    {if(!c_++)cerr<<"\033[96;1m"; \
    __VA_ARGS__; \
    if(!--c_)cerr<<"\033[0m";}
    #else
    #define debug(...) {}
    #endif
    #define assrt(...) debug(\
    if (not (__VA_ARGS__)) \
        exit((cerr << __LINE__ << ": " << #__VA_ARGS__ << '\n', 0));\
    )
    #define st first
    #define nd second
    #define all(...) (__VA_ARGS__).begin(), (__VA_ARGS__).end()
    using namespace std; using ll = long long;
    template < typename t > using V = vector< t >;
    template < typename t, size_t s > using A = array< t, s >;
    void print() {cout << '\n';}
    template< typename t, typename... v >
    void print(const t& a, const v&... b)
    {cout << a << (sizeof...(b)?" ":""); print(b...);}
    template< typename t > void print_range(t a, const t& b)
    { while (a != b) cout << (*a++) << ' '; cout << '\n';}
    #define dump(...) debug(print(#__VA_ARGS__,'=',__VA_ARGS__))
    #define dump_range(...) debug(cerr<<#__VA_ARGS__ << ": "; print_range(__VA_ARGS__))
    /*}}}*/
     
    constexpr int hax = 3e3, wax = hax;
     
    int h, w, tab[wax + 1];
     
    int32_t main()
    {
        ios::sync_with_stdio(false);
        cin.tie(nullptr);
     
        cin >> h >> w;
     
        ll res = 0;
        for (int i = 0; i < h; ++i)
        {
            string s; cin >> s;
            int c = 0;
            for (int j = w - 1; j >= 0; --j)
            {
                if (s[j] == 'J')
                    tab[j] += c;
                if (s[j] == 'O')
                    ++c;
                if (s[j] == 'I')
                    res += tab[j];
            }
        }
     
        print(res);
    }

• Subtask 1: 20 / 20
• Subtask 2: 30 / 30
• Subtask 3: 50 / 50