Submission #1082902

#	Time	Username	Problem	Language	Result	Execution time	Memory
1082902		timmyli3481	Knapsack (NOI18_knapsack)	C++14	73 / 100	1047 ms	15880 KiB

knapsack

#include <bits/stdc++.h>
using namespace std;
 
int s, n, cnt;
long long v[100001*30], w[100001*30];
long long dp[2001];
 
int main(){
	scanf("%d%d", &s, &n);
	for(int i=1; i<=n; i++){
//		scanf("%lld%lld%lld", &v[i], &w[i], &k[i]);
        long long vi, wi, ki;
        scanf("%lld%lld%lld", &vi, &wi, &ki);
		int t = 1;
		while (ki>=t) {
			v[++cnt]=vi*t;
			w[cnt]=wi*t;
			ki-=t;
			t*=2;
		}
		if(ki>0) {
			v[++cnt]=vi*ki;
			w[cnt]=wi*ki;
		}
	}
	for(int i=1; i<=cnt; i++){
		for(int j=s; j>=w[i]; j--){
			dp[j]=max(dp[j], dp[j-w[i]]+v[i]);
		}
	}
	
	printf("%lld", dp[s]);
}

Compilation message (stderr)

knapsack.cpp: In function 'int main()':
knapsack.cpp:9:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
    9 |  scanf("%d%d", &s, &n);
      |  ~~~~~^~~~~~~~~~~~~~~~
knapsack.cpp:13:14: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   13 |         scanf("%lld%lld%lld", &vi, &wi, &ki);
      |         ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 17 / 17
• Subtask 3: 20 / 20
• Subtask 4: 24 / 24
• Subtask 5: 0 / 27