POJ3282+模拟

模拟题

/*
模拟
注意：相同一边的车有先后顺序！
*/
#include<stdio.h>
#include<string.h>
#include<stdlib.h>
#include<algorithm>
#include<iostream>
#include<queue>
#include<map>
#include<stack>
#include<set>
#include<math.h>
using namespace std;
typedef long long int64;
//typedef __int64 int64;
typedef pair<int64,int64> PII;
#define MP(a,b) make_pair((a),(b)) 
const int maxn = 100000;
const int inf = 0x7fffffff;
const double pi=acos(-1.0);
const double eps = 1e-8;

struct Node{
	int len;
	int id;
}a[ maxn ];

bool Judge( int n ){
	bool f = true;
	for( int i=n;i>=1;i-- ){
		if( a[i].id!=0 ){
			f = false;
			break;
		}
	}
	if( f==true ) return true;
	else return false;
}

int main(){
	int T;
	//freopen("in.txt","r",stdin);
	//freopen("out.txt","w",stdout);
	scanf("%d",&T);
	while( T-- ){
		int LL,n;
		scanf("%d%d",&LL,&n);
		LL *= 100;
		char t[ 10 ];
		for( int i=1;i<=n;i++ ){
			scanf("%d %s",&a[i].len,t);
			if( t[0]=='l' ) a[i].id = -1;
			else a[i].id = 1;
		}
		int ans = 0;
		int cur = -1;
		int L,R;
		L = R = 1;
		while( 1 ){
			if( Judge( n )==true ) 
				break;
			//judge
			cur = -1;
			int sum = 0;
			for( ;L<=n;L++ ){
				if( a[L].id!=cur ) continue;
				if( sum+a[L].len<=LL ){
					sum += a[L].len;
					a[ L ].id = 0;
				}
				else break;
			}
			ans ++;
			if( Judge( n )==true ) 
				break;
			//left
			sum = 0;
			cur = 1;
			for( ;R<=n;R++ ){
				if( a[R].id!=cur ) continue;
				if( sum+a[R].len<=LL ){
					sum += a[R].len;
					a[ R ].id = 0;
				}
				else break;
			}
			ans++;
			//right
		}
		printf("%d
",ans);
	}
	return 0;
}