Submission #1261350

#	Time	Username	Problem	Language	Result	Execution time	Memory
1261350		sasde	Bitaro the Brave (JOI19_ho_t1)	C++20	20 / 100	1095 ms	2116 KiB

joi2019_ho_t1

#include<bits/stdc++.h>
using namespace std;
bool M1;
#define PI 3.14159265358979323846
#define sz(a) (int)a.size()
#define all(x) x.begin(),x.end()
#define ii pair<int,int>
#define iii pair<int,ii>
#define iv pair<ii,ii>
#define se second
#define fi first
#define ffi fi.fi
#define sfi se.fi
#define sse se.se
#define fse fi.se
#define lt(i, c, d) for(int i = c; i <= d; ++i)
#define fl(i, c, d) for(int i = d; i >= c; --i)
#define pb push_back
#define emb emplace_back
#define emf emplace_front
#define em emplace
#define look_memory cerr<<abs(&M2-&M1)/1024.0/1024<<'\n'
#define look_time   cerr << "TIME : " << clock() * 0.001 << "s" <<'\n'
const int N=3e3+5,lg=30,mod=1e9+7;
mt19937 rd(chrono::steady_clock::now().time_since_epoch().count());
int Rand(int u,int v){
 return u+rd()%(v-u+1);
}
int dx[]={1,0,-1,0,1,1,-1,-1};
int dy[]={0,-1,0,1,1,-1,1,-1};
int hieght,width;
bitset<N>s[N],s1[N];
char a[N][N];
bool M2;
void solve(){
    cin >> hieght >> width;
    for(int i=1;i<=hieght;++i){
        for(int j=1;j<=width;++j){
            cin >> a[i][j];
            if(a[i][j]=='J')s[j][i]=1;
            if(a[i][j]=='O')s1[j][i]=1;
        }
    }
    long long ans=0;
    for(int k=2;k<=hieght;++k){
        for(int l=2;l<=width;++l){
            for(int i=1;i<k;++i){
                for(int j=1;j<l;++j){
                    if(s[j][i]&&s1[l][i]&&a[k][j]=='I'){
                        ++ans;
                    }
                }
            }
        }
    }
    cout << ans;

}
main()
{
  srand(time(0));
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    #define task "aws"
    if(fopen(task".inp","r")){
      freopen(task".inp","r",stdin);
      freopen(task".out","w",stdout);
    }
    int t=1;
 //   cin >> t;
while(t--){
    solve();cout<<'\n';
}
look_memory;
look_time;
}

Compilation message (stderr)

joi2019_ho_t1.cpp:59:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   59 | main()
      | ^~~~
joi2019_ho_t1.cpp: In function 'int main()':
joi2019_ho_t1.cpp:67:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   67 |       freopen(task".inp","r",stdin);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t1.cpp:68:14: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   68 |       freopen(task".out","w",stdout);
      |       ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 0 / 30
• Subtask 3: 0 / 50