UVa537 - Artificial Intelligence?

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#include<iostream>#include<sstream>#include<cstring>#include<cstdio>using namespace std;int main(){    int T;    cin>>T;    getchar();    for(int case_num=1;case_num<=T;case_num++)    {        string line;        getline(cin,line);        double P(-1.0),U(-1.0),I(-1.0);        istringstream sin(line);        char ch;        while(sin >> ch){            if(ch=='P'){               char t;               sin>>t;               if(t != '=') continue;               sin>>P;               sin>>t;               if(t== 'm') P/=1000;               else if(t=='k') P*=1000;               else if(t=='M') P*=1000000;            }            else if(ch=='U'){                char t;                sin>>t;                if(t!='=') continue;                sin>>U;                sin>>t;                if(t=='m') U/=1000;                else if(t=='k') U*=1000;                else if(t=='M') U*=1000000;            }            else if(ch == 'I'){                char t;                sin>>t;                if(t!='=') continue;                sin>>I;                sin>>t;                if(t=='m') I/=1000;                else if(t=='k') I*=1000;                else if(t=='M') I*=1000000;            }        }        cout<<"Problem #"<<case_num<<endl;        if(P==-1.0)            printf("P=%.2lfW\n",U*I);        else if(U==-1.0)            printf("U=%.2lfV\n",P/I);        else            printf("I=%.2lfA\n",P/U);        printf("\n");    }}
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