Submission #702472

#	Time	Username	Problem	Language	Result	Execution time	Memory
702472		nicecoder37	Bitaro the Brave (JOI19_ho_t1)	C++17	0 / 100	1 ms	724 KiB

joi2019_ho_t1

//~ #pragma GCC optimize("Ofast,unroll-loops")
//~ #pragma GCC target("avx,avx2,fma,sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#include <bits/stdc++.h>
#define fast ios_base::sync_with_stdio(false),cin.tie(NULL),cout.tie(NULL)
#define fi first
#define se second
#define space " "
#define endl "\n"
#define mp make_pair
#define pb push_back
#define pf push_front
#define lb lower_bound
#define ub upper_bound
#define md 1000000007
#define inf 1000000000
#define li 3005
#define int long long
using namespace std;
int n,m,vis1[li],vis2[li],flag;
char c[li][li];
vector<int> v1[li],v2[li];
int32_t main(){
	scanf("%lld %lld",&n,&m);
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			scanf(" %c",&c[i][j]);
		}
	}
	for(int i=1;i<=n;i++){
		for(int j=1;j<=m;j++){
			if(c[i][j]=='O') v1[i].pb(j);
		}
		//~ printf("ABUBU %lld %lld\n",i,sayi);
	}
	for(int i=1;i<=m;i++){
		for(int j=1;j<=n;j++){
			if(c[j][i]=='I') v2[i].pb(j);
		}
		//~ printf("ABUBRERER %lld %lld\n",i,sayi);
	}
	for(int i=1;i<=min(n,m);i++){
		//~ int vl1=vis2[i];
		//~ if(vl1==0) continue;
		for(int j=1;j<=n;j++){
			if(c[j][i]!='J') continue;
			auto itr1=ub(v2[i].begin(),v2[i].end(),j);
			auto itr2=ub(v1[j].begin(),v1[j].end(),i);
			if(itr1==v2[i].end() || itr2==v1[j].end()) continue;
			int vl1=itr1-v2[i].begin();
			int vl2=itr2-v1[j].begin();
			vl1=(int)v2[i].size()-vl1;
			vl2=(int)v1[j].size()-vl2;
			flag+=vl1*vl2;
		}
	}
	printf("%lld\n",flag);
	return 0;
}

Compilation message (stderr)

joi2019_ho_t1.cpp: In function 'int32_t main()':
joi2019_ho_t1.cpp:23:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   23 |  scanf("%lld %lld",&n,&m);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~
joi2019_ho_t1.cpp:26:9: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   26 |    scanf(" %c",&c[i][j]);
      |    ~~~~~^~~~~~~~~~~~~~~~

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