本場詳細題解見：https://blog.csdn.net/xiang_6/article/details/83549528

題意&思路見上述連結

#include<bits/stdc++.h>

using namespace std;

#define out fflush(stdout)
#define fast ios::sync_with_stdio(0),cin.tie(0);

typedef long long ll;

const int maxn = 256 + 7;
const int INF = 0x3f3f3f3f;

int n;
char s[maxn];

int main() {
    scanf("%d", &n);
    scanf("%s", s+1);
    int ans1 = 0, ans2 = 0;
    bool f = 0;
    int cur = 0;
    for(int i = 1; i <= n; ++i) {
        if(s[i] == '(') {
            f = 1;
            if(cur) ans1 = max(ans1, cur);
            cur = 0;
            continue;
        }
        if(s[i] == ')') {
            f = 0;
            if(cur) ans2++;
            cur = 0;
            continue;
        }

        if(s[i] == '_') {
            if(!f) {
                ans1 = max(ans1, cur);
                cur = 0;
            }
            else {
                if(cur) ans2++;
            }
            cur = 0;
        }
        else {
            cur++;
        }
    }
    if(cur) ans1 = max(ans1, cur);
    printf("%d %d\n", ans1, ans2);
    return 0;
}