致一場我沒打的CF

\(\color{red}{這場CF我沒打~~}\)

---

\(\color{blue}{所以你寫他幹嘛???}\)

但是我幫忙代打了2333(大噓)

---

\(\color{yellow}C\)

code

#include <bits/stdc++.h>
#define maxn 250000
using namespace std ;
int n ,l , r , top ;
char a[maxn] ;
int main () {
    cin >> n ;
    for(int i = 1 ; i <= n ; i ++) {
        cin >> a[i] ;
        if(a[i] == '(') l ++ ;
        else r ++ ; 
    }
    for(int i = 1 ; i <= n ; i ++) {
        if(a[i] == '(' ) top ++ ;
        else top -- ;
        if(top < -1) {
            puts("No") ;
            return 0 ;
        } 
    }
    if(l != r) {
        puts("No") ;
        return 0 ;
    }else puts("Yes") ;
    return 0 ;
} 

---

\(\color{brown}{B}\)

#include <bits/stdc++.h> 
using namespace std ;
int b , g , n , ans ;
int main() {
    scanf("%d%d%d",&b,&g,&n);
    for(int i = 0 ; i <= n ;i ++) {
        if(i > b)
            break;
        if(n-i > g) 
            continue;
        ans ++ ;
    }
    printf("%d\n" , ans);
    return 0;
}

---

\(\color{green}{A}\)

#include <bits/stdc++.h> 
using namespace std ;
int n , d , e , t , s[20] ;
bool f[100000005] ;
int dl[10] = {0,1,2,5,10,20,50,100} ;
int el[10] = {0,5,10,20,50,100,200} ;
int main() {
    scanf("%d%d%d",&n,&d,&e);
    for(int i = 1 ;i <= 7 ; i ++)
        s[++t] = d * dl[i] ;
    for(int i = 1 ; i <= 6 ; i ++)
        s[++t] = e * el[i] ;
    f[0] = 1 ;
    for(int i = 1 ; i <= t ; i ++)
        for(int j = s[i] ; j <= n ; j ++)
        if(f[j-s[i]]) 
            f[j] = 1 ;
    for(int i = n ; i >= 0 ; i --) {
        if(f[i] == 1) {
            printf("%d\n",n-i);
            break;
        }
    }
    return 0;
}

溜了溜了