C++(clang++11) 解法, 执行用时: 6ms, 内存消耗: 416K, 提交时间: 2020-12-19 10:18:44

#include<bits/stdc++.h>
using namespace std;
int main(){
map<string,string>m;
m["hard"]="DespairSlope";
m["sohungry"]="DiningHall";
m["amazing"]="NanhuBuilding";
m["sobeautiful"]="GuiziMountain";
m["tired"]="YyBuilding";
m["study"]="Library";
m["toofast"]="SchoolBus";
char a;
string b;
while(cin>>a){
	if(a=='#'){
		cout<<m[b]<<"#";
		b.clear();
		continue;
	}
	b+=a;
}
cout<<m[b];
return 0; 
} 

JavaScript(V8 6.0.0) 解法, 执行用时: 9ms, 内存消耗: 5112K, 提交时间: 2020-12-19 11:05:40

const s = readline().split('#')
var a = {
    study: 'Library',
    toofast: 'SchoolBus',
    tired: 'YyBuilding',
    sobeautiful: 'GuiziMountain',
    amazing: 'NanhuBuilding',
    sohungry: 'DiningHall',
    hard: 'DespairSlope'
};
res = ''
for (i of s) {
    res += a[i] + '#'
}
print(res.slice(0, -1))

Python3(3.9) 解法, 执行用时: 21ms, 内存消耗: 2808K, 提交时间: 2020-12-19 11:22:23

ma = {'hard':'DespairSlope', 'sohungry':'DiningHall', 'amazing':'NanhuBuilding','sobeautiful':'GuiziMountain','tired':'YyBuilding','study':'Library','toofast':'SchoolBus'}
ans = []
for i in input().strip().split('#'): ans.append(ma[i])
print('#'.join(ans))