ABCD比较简单不写了E只要有单个突出就无解#include iostream #includecstring #includecmath using namespace std; typedef long long ll; const int INF 0x7f7f7f7f; int T,n,dt[200005]; int main() { cinT; while(T--){ memset(dt,0,sizeof(dt)); cinn; dt[0]-1; for(int i1;in;i){ cindt[i]; } int t11; for(int i1;in;i){ if(dt[i1]dt[i]dt[i-1] dt[i]){ t10; break; } } if(t1) coutYesendl; else coutNoendl; } }
