제출 #255597

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
255597		tleontest1	Dango Maker (JOI18_dango_maker)	C++17	13 / 100	30 ms	35840 KiB

dango_maker

#pragma GCC optimize ("O3")
#pragma GCC target ("sse4")
#pragma GCC optimize ("unroll-loops")
#pragma GCC target ("avx2")

#include <bits/stdc++.h>

using namespace std;

typedef long long lo;
typedef pair< lo,lo > PII;

#define fi first
#define se second
#define mp make_pair
#define endl "\n"
#define pb push_back
#define fio() ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL)
#define FOR for(int i=1;i<=n;i++)
#define mid ((start+end)/2)
#define ort ((bas+son)/2)

const lo inf = 1000000000000000000;
const lo KOK = 100000;
const lo LOG = 30;
const lo li = 3005;
const lo mod = 1000000007;

int n,m,b[li],a[li],k,flag,t,vis[li][li],vis1[li][li],visit[li][li];
int ans;
char c[li][li];
string s;
vector<int> v;

int main(void){
	scanf("%d %d",&n,&m);
	FOR{
		for(int j=1;j<=m;j++){
			scanf(" %c",&c[i][j]);
		}
	}
	int ans1=0;
	FOR{
		for(int j=3;j<=m;j++){
			if(c[i][j]=='W' && c[i][j-1]=='G' && c[i][j-2]=='R'){vis[i][j]=1;vis[i][j-1]=1;vis[i][j-2]=1;}
		}
	}
	for(int j=1;j<=m;j++){
		for(int i=3;i<=n;i++){
			if(c[i][j]=='W' && c[i-1][j]=='G' && c[i-2][j]=='R'){vis1[i][j]=1;vis1[i-1][j]=1;vis1[i-2][j]=1;}
		}
	}
	FOR{
		for(int j=3;j<=m;j++){
			if(c[i][j]!='W' || c[i][j-1]!='G' || c[i][j-2]!='R')continue;
			int at=vis[i][j]+vis[i][j-1]+vis[i][j-2];
			int at1=vis1[i][j]+vis1[i][j-1]+vis1[i][j-2];
			if(at>=at1 && visit[i][j]==0 && visit[i][j-1]==0 && visit[i][j-2]==0){ans++;visit[i][j]=1;visit[i][j-1]=1;visit[i][j-2]=1;}
		}
	}
	for(int j=1;j<=m;j++){
		for(int i=3;i<=n;i++){
			if(c[i][j]!='W' || c[i-1][j]!='G' || c[i-2][j]!='R')continue;
			//~ int at=vis[i][j]+vis[i-1][j]+vis[i-2][j];
			//~ int at1=vis1[i][j]+vis1[i-1][j]+vis1[i-2][j];
			if(visit[i][j]==0 && visit[i-1][j]==0 && visit[i-2][j]==0){ans++;visit[i][j]=1;visit[i-1][j]=1;visit[i-2][j]=1;}
		}
	}
	memset(visit,0,sizeof(visit));
	for(int j=1;j<=m;j++){
		for(int i=3;i<=n;i++){
			if(c[i][j]!='W' || c[i-1][j]!='G' || c[i-2][j]!='R')continue;
			int at=vis[i][j]+vis[i-1][j]+vis[i-2][j];
			int at1=vis1[i][j]+vis1[i-1][j]+vis1[i-2][j];
			if(at<=at1 && visit[i][j]==0 && visit[i-1][j]==0 && visit[i-2][j]==0){ans1++;visit[i][j]=1;visit[i-1][j]=1;visit[i-2][j]=1;}
		}
	}
	FOR{
		for(int j=3;j<=m;j++){
			if(c[i][j]!='W' || c[i][j-1]!='G' || c[i][j-2]!='R')continue;
			//~ int at=vis[i][j]+vis[i][j-1]+vis[i][j-2];
			//~ int at1=vis1[i][j]+vis1[i][j-1]+vis1[i][j-2];
			if(visit[i][j]==0 && visit[i][j-1]==0 && visit[i][j-2]==0){ans1++;visit[i][j]=1;visit[i][j-1]=1;visit[i][j-2]=1;}
		}
	}
	printf("%d\n",max(ans,ans1));
	return 0;
}

컴파일 시 표준 에러 (stderr) 메시지

dango_maker.cpp: In function 'int main()':
dango_maker.cpp:36:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d %d",&n,&m);
  ~~~~~^~~~~~~~~~~~~~~
dango_maker.cpp:39:9: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    scanf(" %c",&c[i][j]);
    ~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 13 / 13
• Subtask 2: 0 / 20
• Subtask 3: 0 / 67