uva 537 Artificial Intelligence?
https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid;=8&page;=show_problem&problem;=478 题意：给出一段文字。。其中包含了 P,U,I（功率，电压，电流）中的两个。。求第三个。 思路：字符串处理。。第一次用vim复制整段代码。。命令模式下按v,然后光标扫过的区域都会选中，按y就就复制到剪贴板了。。 所以虽然代码写了300行但只有100行是需要写的。。200行复制改下就好== WA了两次。。一次是因为I写成了小写。。另一次是因为多组数据记得初始化多次。
/* ***********************************************
Author :111qqz
Created Time :2016年01月22日 星期五 03时25分16秒
File Name :code/uva/537.cpp
************************************************ */
#include <cstdio>
#include <cstring>
#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <set>
#include <map>
#include <string>
#include <cmath>
#include <cstdlib>
#include <ctime>
#define fst first
#define sec second
#define lson l,m,rt<<1
#define rson m+1,r,rt<<1|1
#define ms(a,x) memset(a,x,sizeof(a))
typedef long long LL;
#define MP make_pair
using namespace std;
const double eps = 1E-8;
const int dx4[4]={1,0,0,-1};
const int dy4[4]={0,-1,1,0};
const int inf = 0x3f3f3f3f;
string str;
char cstr[20];
double i,p,u;
int pu,pp;
int pi;
int pv,pw,pa;
int beishu;
string tmp;
int main()
{
#ifndef ONLINE_JUDGE
freopen("code/in.txt","r",stdin);
#endif
int T;
int cas = 0;
cin>>T;
getchar();
while (T--)
{
beishu = 0; //多组数据。。。忘记每次都初始化==
printf("Problem #%d\n",++cas);
getline(cin,str);
// cout<<"str:"<<str<<endl;
pu=str.find("U=");
pi=str.find("I=");
pp=str.find("P=");
// cout<<"pi:"<<pi<<" pu:"<<pu<<" pp:"<<pp<<endl;
if (pp==-1)
{
pv=str.find('V',pu+1);
pa=str.find('A',pi+1);
if (str[pv-1]=='m'||str[pv-1]=='k'||str[pv-1]=='M')
{
if (str[pv-1]=='m')
{
beishu-=3;
tmp = str.substr(pu+2,pv-pu-3);
}
if (str[pv-1]=='k')
{
beishu+=3;
tmp = str.substr(pu+2,pv-pu-3);
}
if (str[pv-1]=='M')
{
beishu+=6;
tmp = str.substr(pu+2,pv-pu-3);
}
}
else
{
tmp = str.substr(pu+2,pv-pu-2);
}
strcpy(cstr,tmp.c_str());
sscanf(cstr,"%lf",&u);
// cout<<"u:"<<u<<endl;
if (str[pa-1]=='m'||str[pa-1]=='k'||str[pa-1]=='M')
{
if (str[pa-1]=='m')
{
beishu-=3;
tmp = str.substr(pi+2,pa-pi-3);
}
if (str[pa-1]=='k')
{
beishu+=3;
tmp = str.substr(pi+2,pa-pi-3);
}
if (str[pa-1]=='M')
{
beishu+=6;
tmp = str.substr(pi+2,pa-pi-3);
}
}
else
{
tmp = str.substr(pi+2,pa-pi-2);
}
strcpy(cstr,tmp.c_str());
sscanf(cstr,"%lf",&i);
// cout<<"i:"<<i<<endl;
p = 1.0;
if (beishu<0)
{
for ( int i = 1 ; i <= abs(beishu) ; i++)
{
p = p*0.1;
}
}
else
{
for ( int i = 1 ; i <= beishu ; i++)
{
p = p * 10;
}
}
p = p*u*i;
printf("P=%.2fW\n",p);
}
if (pi==-1)
{
pv = str.find('V',pu+1);
pw = str.find("W",pp+1);
if (str[pv-1]=='m'||str[pv-1]=='k'||str[pv-1]=='M')
{
if (str[pv-1]=='m')
{
beishu+=3;
tmp = str.substr(pu+2,pv-pu-3);
}
if (str[pv-1]=='k')
{
beishu-=3;
tmp = str.substr(pu+2,pv-pu-3);
}
if (str[pv-1]=='M')
{
beishu-=6;
tmp = str.substr(pu+2,pv-pu-3);
}
}
else
{
tmp = str.substr(pu+2,pv-pu-2);
}
strcpy(cstr,tmp.c_str());
sscanf(cstr,"%lf",&u);
// cout<<"u:"<<u<<endl;
if (str[pw-1]=='m'||str[pw-1]=='k'||str[pw-1]=='M')
{
if (str[pw-1]=='m')
{
beishu-=3;
tmp = str.substr(pp+2,pw-pp-3);
}
if (str[pw-1]=='k')
{
beishu+=3;
tmp = str.substr(pp+2,pw-pp-3);
}
if (str[pw-1]=='M')
{
beishu+=6;
tmp = str.substr(pp+2,pw-pp-3);
}
}
else
{
tmp = str.substr(pp+2,pw-pp-2);
}
strcpy(cstr,tmp.c_str());
sscanf(cstr,"%lf",&p);
// cout<<"p:"<<p<<endl;
i=1.0;
if (beishu<0)
{
for ( int i = 1 ; i <=abs(beishu) ; i++)
{
i=i*0.1;
}
}
else
{
for ( int i = 1 ; i <= beishu ; i++)
{
i=i*10;
}
}
i = i*p/u;
printf("I=%.2fA\n",i);
}
if (pu==-1)
{
pa = str.find('A',pi);
pw = str.find('W',pp);
if (str[pa-1]=='m'||str[pa-1]=='k'||str[pa-1]=='M')
{
if (str[pa-1]=='m')
{
beishu+=3;
tmp = str.substr(pi+2,pa-pi-3);
}
if (str[pa-1]=='k')
{
beishu-=3;
tmp = str.substr(pi+2,pa-pi-3);
}
if (str[pa-1]=='M')
{
beishu-=6;
tmp = str.substr(pi+2,pa-pi-3);
}
}
else
{
tmp = str.substr(pi+2,pa-pi-2);
}
strcpy(cstr,tmp.c_str());
sscanf(cstr,"%lf",&i);
// cout<<"i:"<<i<<endl;
if (str[pw-1]=='m'||str[pw-1]=='k'||str[pw-1]=='M')
{
if (str[pw-1]=='m')
{
beishu-=3;
tmp = str.substr(pp+2,pw-pp-3);
}
if (str[pw-1]=='k')
{
beishu+=3;
tmp = str.substr(pp+2,pw-pp-3);
}
if (str[pw-1]=='M')
{
beishu+=6;
tmp = str.substr(pp+2,pw-pp-3);
}
}
else
{
tmp = str.substr(pp+2,pw-pp-2);
}
strcpy(cstr,tmp.c_str());
sscanf(cstr,"%lf",&p);
// cout<<"p:"<<p<<endl;
u = 1;
if (beishu<0)
{
for ( int i = 1 ; i <=abs(beishu) ; i++)
{
u *=0.1;
}
}
else
{
for ( int i = 1 ; i <= beishu ; i++)
{
u *=10;
}
}
u = u*p/i;
printf("U=%.2fV\n",u);
}
printf("\n");
}
#ifndef ONLINE_JUDGE
fclose(stdin);
#endif
return 0;
}