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个人简介
嘿嘿
#include <bits/stdc++.h> #define aa stack #define bb long long #define cc string #define dd using #define ee namespace #define ff std #define gg main #define hh int #define ii cin>> #define jj for #define kk cout<< #define ll length #define mm if #define nn switch #define oo push #define pp case #define qq pop #define rr top #define ss break dd ee ff; aa<hh> s; hh gg() { cc c; ii c; jj(hh i=c.ll()-1;i>=0;i--){ mm(c[i]>='0'&&c[i]<='9'){ s.oo(c[i]-'0'); } hh x,y; nn(c[i]){ pp '+': x=s.rr(); s.qq(); y=s.rr(); s.qq(); s.oo(x+y); ss; pp '-': x=s.rr(); s.qq(); y=s.rr(); s.qq(); s.oo(x-y); ss; pp '*': x=s.rr(); s.qq(); y=s.rr(); s.qq(); s.oo(x*y); ss; pp '/': x=s.rr(); s.qq(); y=s.rr(); s.qq(); s.oo(x/y); ss; } } kk s.rr(); }
完全看不懂吧!
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