CodeForces
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http://codeforces.com/contest/868/problem/A
题意:密码为两位的小写字母,现在你可以猜n次,求这些组合中是否可以匹配原密码。
题解:暴力匹配。
代码:
#include<bits/stdc++.h>#define debug cout<<"aaa"<<endl#define d(a) cout<<a<<endl#define pb push_back#define mem(a,b) memset(a,b,sizeof(a))#define LL long long#define lson l,mid,root<<1#define rson mid+1,r,root<<1|1#define MIN_INT (-2147483647-1)#define MAX_INT 2147483647#define MAX_LL 9223372036854775807i64#define MIN_LL (-9223372036854775807i64-1)using namespace std;const int N = 100 + 5;const int mod = 1000000000 + 7;const double eps = 1e-8;int main(){string a,b;string ans[N];cin>>a;int n;cin>>n;for(int i=1;i<=n;i++){cin>>ans[i];if(ans[i]==a){puts("YES");return 0;}}for(int i=1;i<=n;i++){for(int j=1;j<=n;j++){b=ans[i]+ans[j];if(b[1]==a[0]&&b[2]==a[1]){puts("YES");return 0;}}}puts("NO");return 0;}
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