Submission #544470

#	Time	Username	Problem	Language	Result	Execution time	Memory
544470		armashka	Bitaro the Brave (JOI19_ho_t1)	C++17	100 / 100	284 ms	18044 KiB

joi2019_ho_t1

#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
 
#pragma comment(linker, "/stack:200000000")
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,avx2,tune=native")
 
#define fast ios_base::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
#define file(s) freopen(s".in", "r", stdin);freopen(s".out", "w", stdout);
#define all(v) v.begin(),v.end()
#define rall(v) v.rbegin(),v.rend()
#define pb push_back
#define sz size()
#define ft first
#define sd second
 
using namespace std;
typedef long long ll;
typedef pair<ll, ll> pll;
typedef unsigned long long ull;
    
const int N = 1e6 + 10;
const int M = 1e3 + 5;
const ll inf = 1e9;
const ll mod = 1e9 + 7;
const double Pi = acos(-1); 
 
ll binpow(ll x, ll ti) { ll res = 1;while (ti){if(ti & 1)res *= x;x *= x;ti >>= 1; x %= mod; res %= mod;} return res;}
ll binmul(ll x, ll ti) { ll res = 0;while (ti){if(ti & 1)res += x;x += x;ti >>= 1; x %= mod; res %= mod;} return res;}
ll nok(ll a, ll b) { return (a*b)/__gcd(abs(a),abs(b)) * (a*b > 0 ? 1 : -1); }
bool odd(ll n) { return (n % 2 == 1); }                                   
bool even(ll n) { return (n % 2 == 0); }

ll n, m, cnt1[3005], cnt2[3005];
char c[3005][3005];

const void solve(/*Armashka*/) {
    cin >> n >> m;
    for (int i = 1; i <= n; ++ i) {
        for (int j = 1; j <= m; ++ j) {
            cin >> c[i][j];
            if (c[i][j] == 'O') ++ cnt1[i];
            if (c[i][j] == 'I') ++ cnt2[j];
        }
    }
    ll ans = 0;
    for (int i = 1; i <= n; ++ i) {
        for (int j = 1; j <= m; ++ j) {
            if (c[i][j] == 'J') ans += (cnt1[i] * cnt2[j]);
            else if (c[i][j] == 'O') -- cnt1[i];
            else -- cnt2[j];
        }
    }
    cout << ans;
}
 
signed main() {
    srand(time(NULL));
    fast;
    // file("");
    int tt = 1;
    // cin >> tt;
    while (tt --) {
        solve();
    }                            
}
// Jelbiretip kok tudy, boys in the hood
// Kim qandai juz, kimde qandai ru

Compilation message (stderr)

joi2019_ho_t1.cpp:5: warning: ignoring '#pragma comment ' [-Wunknown-pragmas]
    5 | #pragma comment(linker, "/stack:200000000")
      |

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