牛客编程巅峰赛S2赛季第5场代码
#define LL long long #define DB double #define pb push_back #define pii pair<int,int> #define mpt make_pair #define fr first #define sc second #define M 1000020//Size #define INF 1000000000 #define INFLL 1000000000000000000 inline int read(){ int nm=0,fh=1; char c=getchar(); for(;!isdigit(c);c=getchar()) if(c=='-') fh=-1; for(;isdigit(c);c=getchar()) nm=nm*10+c-'0'; return nm*fh; } #define mod 1000000007//About inline int add(int x,int y){return (x+y>=mod)?(x+y-mod):(x+y);} inline int mns(int x,int y){return (x-y<0)?(x-y+mod):(x-y);} inline int mul(LL x,LL y){return x*y%mod;} inline void upd(int &x,int y){x=(x+y>=mod)?(x+y-mod):(x+y);} inline void dec(int &x,int y){x=(x-y<0)?(x-y+mod):(x-y);} inline int qpow(int x,LL sq){int res=1;for(;sq;sq>>=1,x=mul(x,x))if(sq&1)res=mul(res,x);return res;} class Solution { public: LL sta[M]; bool flA,flS; long long solve(string str) { // write code here int n=str.length(),top=0; LL cur=0ll; for(int i=0;i<n;i++){ if(str[i]=='#'){sta[++top]=cur,cur=0ll;continue;} if(isdigit(str[i])) cur=cur*10ll+(str[i]-'0'); if((str[i]=='+'||str[i]=='-'||str[i]=='*')){ LL t1=sta[top--],t2=sta[top--];swap(t1,t2); if(str[i]=='+') sta[++top]=t1+t2; if(str[i]=='-') sta[++top]=t1-t2; if(str[i]=='*') sta[++top]=t1*t2; } } return sta[1]; } }t;
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