2017 Multi-University Training Contest
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http://acm.hdu.edu.cn/showproblem.php?pid=6140
题意:
给出
思路:
我们最开始得到
代码:
#include<bits/stdc++.h>using namespace std;#define ll long longll a[10005];int main(){ ll T; ll n,k; char ch; while(~scanf("%lld",&T)){ while(T--){ scanf("%lld %lld",&n,&k); for(ll i = 0;i < n;i++){ scanf("%lld",&a[i]); } ll l = -1,r = 1; for(ll i = 0;i < n;i++){ getchar(); scanf("%c",&ch); if(ch == 'N'){ l -= a[i]; r += a[i]; }else if(ch == 'L'){ r += a[i]; }else if(ch == 'D'){ l -= a[i]; } } if(k >= l && k <= r){ puts("yes"); }else{ puts("no"); } } }}
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