小写字母比大写字母ascll码多32

做法1.但是TLE

https://www.luogu.com.cn/problem/P1308

#include <cstdio>
#include <iostream>
#include <string>
#include <cstring>
#include <cmath>
#include <algorithm>
#include <sstream>

using namespace std;
typedef long long ll;

int main()
{
    string str1 , str2 , empty_str;
    char ch;
    int pos = 0 , cnt = 0;

    cin >> str1;
    getchar();
    for(char &s: str1) if(s<='Z'&&s>='A') s += 32;
    while((ch = getchar())!='\n'){
        if(ch!=' '){
            cin >> str2;
            str2 = ch + str2;
            for(char &s: str2) if(s<='Z'&&s>='A') s += 32;
            if(str2==str1){
                cnt++;
            }
            else{
                if(cnt==0)
                pos += str2.length();
            }
            str2 = empty_str;
        }
        else{
            if(cnt==0)
            pos ++;
        }
    }

    cout << str2 <<endl;
    if(cnt==0) cout << -1;
    else cout << cnt<<' '<<pos;

    return 0;
}

做法2.还是超时 但是少了一些 但是内存占的巨大

#include <cstdio>
#include <iostream>
#include <string>
#include <cstring>
#include <cmath>
#include <algorithm>
#include <sstream>

using namespace std;
typedef long long ll;


int main()
{
    string str1;
    cin >> str1;
    for(char &a : str1) if(a<='Z'&&a>='A') a += 32;

    int pos = 0,_time = 0;
    string str2,empty_str2;
    getchar();

    char ch;
    while(1){
        ch = getchar();

        if(ch=='\n'){
            if(str2==str1){
                _time++;
            }
//          else{
//              if(_time==0) pos += str2.length();
//          }
            break;
        }
        else if(ch==' '){
            if(str2==str1){
                _time ++;
            }
            if(_time==0){
                pos+= 1 + str2.length();
            }

            str2 = empty_str2;
        }
        else{
            str2 += ch;
        }
    }

    //cout << str2;
    if(_time==0) cout <<-1;
    else cout <<_time<<' '<<pos;
    return 0;
}