Submission #1265533

#	Time	Username	Problem	Language	Result	Execution time	Memory
1265533		herominhsteve	Kas (COCI17_kas)	C++20	100 / 100	140 ms	2000 KiB

kas

#include <bits/stdc++.h>
#define el '\n'
#define FNAME "NAME"
#define allof(x) x.begin(),x.end()
#define allof1(x) x.begin()+1,x.end()
#define mset(x,n) memset(x,(n),sizeof(x))
const long long MOD = (long long) 1e9+7;
template<class X,class Y> bool minimize(X &a,Y b){ if (a>b) {a=b; return true;} return false;}
template<class X,class Y> bool maximize(X &a,Y b){ if (a<b) {a=b; return true;} return false;}

void setup(){
    std::ios_base::sync_with_stdio(0);
    std::cin.tie(0);std::cout.tie(0);
	if (fopen(FNAME".inp","r")){
		freopen(FNAME".inp","r",stdin);
		freopen(FNAME".out","w",stdout);
	}
}

const int INF = 1e9 + 15092007;

int n;
std::vector<int> a;
int total;

void init(){
	std::cin>>n;
	a.resize(n);
	for (int i=0;i<n;i++){
		std::cin>>a[i];
		total+=a[i];
	}
}

void sol(){
	int sz = 2 * total + 1;
	int OFFSET = total;
	std::vector<int> dp(sz,-INF);
	dp[OFFSET] = 0;
	for (int i=0;i<n;i++){
		std::vector<int> nxt(sz,-INF);
		for (int delta=-total;delta<=total;delta++){
			int cur = OFFSET + delta;
			if (dp[cur]==-INF) continue;
			// ! A takes
			if (cur + a[i] <sz) maximize(nxt[cur + a[i]],dp[cur] + a[i]);
			// ! B takes
			if (cur - a[i] >=0) maximize(nxt[cur - a[i]],dp[cur]);
			// ! No one takes
			maximize(nxt[cur],dp[cur]);
		} 
		dp.swap(nxt);
	}
	std::cout<< total - dp[OFFSET];
}

int main(){
    setup();
    init();
    sol();
}

Compilation message (stderr)

kas.cpp: In function 'void setup()':
kas.cpp:15:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   15 |                 freopen(FNAME".inp","r",stdin);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~
kas.cpp:16:24: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |                 freopen(FNAME".out","w",stdout);
      |                 ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 10 / 10
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 10 / 10
• Subtask 5: 10 / 10
• Subtask 6: 10 / 10
• Subtask 7: 10 / 10
• Subtask 8: 10 / 10
• Subtask 9: 10 / 10
• Subtask 10: 10 / 10