제출 #379171

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
379171		hackermub	Bitaro the Brave (JOI19_ho_t1)	C++17	100 / 100	247 ms	89324 KiB

joi2019_ho_t1

#include<bits/stdc++.h>
using namespace std;

#define ll long long
#define pii pair<int,int>
#define float long double
#define fi first
#define se second
#define pb push_back
#define all(v) v.begin(),v.end()
#define sz(v) (int)v.size()
#define uid uniform_int_distribution<int>
#define forn(i,st,n,inc) for(int i=st;i<n;i+=inc)
#define rforn(i,st,n,inc) for(int i=st-1;i>=n;i-=inc)
//mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
const int MOD = 1e9+7;//998244353;
const int64_t INF = 1e18;

ostream& operator<<(ostream& o,const string& s){
    for(auto c:s) o<<c;
    return o;
}

template<typename F,typename S>
ostream& operator<<(ostream& o,const pair<F,S>& p){
    o<<"["<<p.fi<<","<<p.se<<"]";
    return o;
}

template<typename... T,template<class...> class C>
ostream& operator<<(ostream& o,const C<T...>& v){
    o<<"[";
    int tot=0;
    for(auto x:v){ 
        o<<x;
        if(tot<v.size()-1) o<<",";
        tot++;
    }
    o<<"]";
    return o;
}

vector<string> vec_splitter(string s) {
    s += ',';
    vector<string> res;
    while(!s.empty()) {
        res.push_back(s.substr(0, s.find(',')));
        s = s.substr(s.find(',') + 1);
    }
    return res;
}
void debug_out(
vector<string> __attribute__ ((unused)) args,
__attribute__ ((unused)) int idx, 
__attribute__ ((unused)) int LINE_NUM) { cerr << endl; } 
template <typename Head, typename... Tail>
void debug_out(vector<string> args, int idx, int LINE_NUM, Head H, Tail... T) {
    if(idx > 0) cerr << ", "; else cerr << "Line(" << LINE_NUM << ") ";
    stringstream ss; ss << H;
    cerr << args[idx] << " = " << ss.str();
    debug_out(args, idx + 1, LINE_NUM, T...);
}

#ifdef OFFLINE
clock_t Tm=clock();
#define debug(...) debug_out(vec_splitter(#__VA_ARGS__), 0, __LINE__, __VA_ARGS__)
#else
#define debug(...)
#endif

int32_t main(){
    ios_base::sync_with_stdio(false);cin.tie();
    //If you hack my code , You are gay
    int n,m;
    cin>>n>>m;
    string x[n];
    for(int i=0;i<n;i++) cin>>x[i];
    vector<vector<int>> osuf(n,vector<int>(m)),isuf(m,vector<int>(n));
    for(int i=0;i<n;i++){
        for(int j=m-1;j>=0;j--){
            osuf[i][j] = x[i][j]=='O';
            if(j!=m-1) osuf[i][j]+=osuf[i][j+1];
        }
    }
    for(int j=0;j<m;j++){
        for(int i=n-1;i>=0;i--){
            isuf[j][i] = x[i][j]=='I';
            if(i!=n-1) isuf[j][i]+=isuf[j][i+1];
        }
    }
    ll ans=0;
    for(int i=0;i<n;i++){
        for(int j=0;j<m;j++){
            if(x[i][j]=='J'){
                ans+=osuf[i][j]*isuf[j][i]*1LL;
            }
        }
    }
    cout<<ans;
    //mara kha
    #ifdef OFFLINE
        cerr<<"Time = "<<(double)(clock()-Tm)/CLOCKS_PER_SEC;
    #endif
    return 0;
}

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