CodeForces 723B Text Document Analysis (水题模拟)

题意：给定一行字符串，让你统计在括号外最长的单词和在括号内的单词数。

析：直接模拟，注意一下在左右括号的时候有没有单词。碰到下划线或者括号表示单词结束了。

代码如下：

#pragma comment(linker, "/STACK:1024000000,1024000000")
#include <cstdio>
#include <string>
#include <cstdlib>
#include <cmath>
#include <iostream>
#include <cstring>
#include <set>
#include <queue>
#include <algorithm>
#include <vector>
#include <map>
#include <cctype>
#include <cmath>
#include <stack>
//#include <tr1/unordered_map>
#define freopenr freopen("in.txt", "r", stdin)
#define freopenw freopen("out.txt", "w", stdout)
using namespace std;
//using namespace std :: tr1;

typedef long long LL;
typedef pair<int, int> P;
const int INF = 0x3f3f3f3f;
const double inf = 0x3f3f3f3f3f3f;
const LL LNF = 0x3f3f3f3f3f3f;
const double PI = acos(-1.0);
const double eps = 1e-8;
const int maxn = 1e2 + 5;
const LL mod = 10000000000007;
const int N = 1e6 + 5;
const int dr[] = {-1, 0, 1, 0, 1, 1, -1, -1};
const int dc[] = {0, 1, 0, -1, 1, -1, 1, -1};
const char *Hex[] = {"0000", "0001", "0010", "0011", "0100", "0101", "0110", "0111", "1000", "1001", "1010", "1011", "1100", "1101", "1110", "1111"};
inline LL gcd(LL a, LL b){  return b == 0 ? a : gcd(b, a%b); }
int n, m;
const int mon[] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
const int monn[] = {0, 31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
inline int Min(int a, int b){ return a < b ? a : b; }
inline int Max(int a, int b){ return a > b ? a : b; }
inline LL Min(LL a, LL b){ return a < b ? a : b; }
inline LL Max(LL a, LL b){ return a > b ? a : b; }
inline bool is_in(int r, int c){
    return r >= 0 && r < n && c >= 0 && c < m;
}

int main(){
    while(scanf("%d", &n) == 1){
        string s;
        cin >> s;
        int ans1 = 0, ans2 = 0;
        int cnt = 0;
        bool ok = false;
        for(int i = 0; i < n; ++i){
            if(s[i] == '('){
                ans1 = Max(ans1, cnt);
                cnt = 0;  ok = true;
            }
            else if(s[i] == ')'){
                if(cnt)  ++ans2;
                cnt = 0;  ok = false;
            }
            else if(isalpha(s[i]))  ++cnt;
            else if(cnt && s[i] == '_'){
                if(ok)  ++ans2;
                else ans1 = Max(ans1, cnt);
                cnt = 0;
            }
        }

        ans1 = Max(ans1, cnt);
        printf("%d %d\n", ans1, ans2);
    }
    return 0;
}