Submission #1158298

#	Time	Username	Problem	Language	Result	Execution time	Memory
1158298		soduynga45	Bitaro the Brave (JOI19_ho_t1)	C++20	100 / 100	456 ms	23088 KiB

joi2019_ho_t1

#include<bits/stdc++.h>
using namespace std;
#define ll long long
#define ff first
#define ss second
#define pb push_back
int main() {
    ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0);
    float db,y[100000],x[1000000];
    long long t,i,l,n,mod=1000000007,c,a,m,e,d,b,k,j,w[300005],f,z[500005],g=0,q,p,r[500005],h,o[1001][1001];
    map<ll,ll>blp,mp,np;
    set<ll>st;
    string s,sa[200005],ta[200005],sn,sm,sk,cr,sx,sy;
    pair<ll,ll>pr[500005];
    char ch[200005];
    vector<ll>ret,v;
    cin>>n>>m;
    for (i=0; i<n; i++){
        cin>>sa[i];
    }
    a=0;
    for (i=n-1; i>=0; i--){
        for (j=m-1; j>=0; j--){
            if (sa[i][j]=='I'){
                mp[j]++;
            }
            if (sa[i][j]=='O'){
                np[i]++;
            }
            if (sa[i][j]=='J'){
                a=a+np[i]*mp[j];
            }
        }
    }
    cout<<a;
}

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