UVa1262
算是一個模擬吧
#include<cstdio> #include<cstring> #include<algorithm> #include<climits> #include<cctype> #include<queue> #include<set> #include<vector>using namespace std;typedef long long ll; const int INF=0x3f3f3f3f; const int MAXN=10; const int R=6; const int C=5;vector<char> key[MAXN]; bool vis[30]; int k,maxn; int cnt[MAXN]; char s1[MAXN][MAXN],s2[MAXN][MAXN];void init() {for(int j=0;j<C;j++){memset(vis,0,sizeof(vis));for(int i=0;i<R;i++){if(vis[s1[i][j]-'A']) continue;bool flag=false;for(int v=0;v<R;v++){if(s1[i][j]==s2[v][j]){flag=true;break;}}if(flag){vis[s1[i][j]-'A']=true;key[j].push_back(s1[i][j]);}}}for(int i=0;i<C;i++){sort(key[i].begin(),key[i].end());}cnt[C-1]=1;for(int i=C-2;i>=0;i--){cnt[i]=cnt[i+1]*key[i+1].size();}maxn=cnt[0]*key[0].size(); }void solve(int k,int idx) {int i=0;if(idx==C) return;while(k>cnt[idx]){i++;k-=cnt[idx];}printf("%c",key[idx][i]);solve(k,idx+1); }int main() {//freopen("data.out","w",stdout);int T;scanf("%d",&T);while(T--){scanf("%d",&k);for(int i=0;i<C;i++){key[i].clear();}for(int i=0;i<R;i++){scanf("%s",s1[i]);}for(int i=0;i<R;i++){scanf("%s",s2[i]);}init();//printf("maxn=%d\n",maxn);if(k>maxn){printf("NO\n");continue;}solve(k,0);printf("\n");}return 0; }總結
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