Submission #588643

#	Time	Username	Problem	Language	Result	Execution time	Memory
588643		peuch	Uplifting Excursion (BOI22_vault)	C++17	0 / 100	4 ms	980 KiB

vault

#include<bits/stdc++.h>
using namespace std;

const int MAXN = 210;
const long long INF = 1e18;
const int HALF = MAXN * MAXN / 2;

int m;
long long l;

long long v[MAXN];
long long dp[2][MAXN * MAXN];

int main(){
	
	scanf("%d %lld", &m, &l);
	long long sum = 0;
	long long cnt = 0;
	for(int i = -m; i <= m; i++){
		scanf("%lld", &v[i + m]);
		sum += v[i + m] * i;
		cnt += v[i + m];
	}
	
	if(l + HALF >= MAXN * MAXN || l + HALF < 0){
		printf("impossible\n");
		return 0;
	}
	
	for(int j = 0; j < MAXN * MAXN; j++)
		dp[1][j] = INF;
	
	dp[1][HALF] = 0;
	for(int i = 1; i <= 2 * m + 1; i++){
		for(int k = 0; k < v[i - 1]; k++){
			for(int j = 0; j < MAXN * MAXN; j++)
				dp[0][j] = dp[1][j];
			for(int j = 0; j < MAXN * MAXN; j++){
				dp[1][j] = dp[0][j];
				if(j - (i - m - 1) < MAXN * MAXN && j - (i - m - 1) >= 0) dp[1][j] = min(dp[1][j], dp[0][j - (i - m - 1)] + 1);
			}
		}
	}
	
	printf("%lld %lld\n", cnt, dp[1][sum - l + HALF]);
	if(dp[1][sum - l + HALF] == INF) printf("impossible\n");
	else printf("%lld\n", cnt - dp[1][sum - l + HALF]);
}

Compilation message (stderr)

vault.cpp: In function 'int main()':
vault.cpp:16:7: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   16 |  scanf("%d %lld", &m, &l);
      |  ~~~~~^~~~~~~~~~~~~~~~~~~
vault.cpp:20:8: warning: ignoring return value of 'int scanf(const char*, ...)' declared with attribute 'warn_unused_result' [-Wunused-result]
   20 |   scanf("%lld", &v[i + m]);
      |   ~~~~~^~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3-1: 0 / 10
• Subtask 3-2: 0 / 10
• Subtask 4-1: 0 / 10
• Subtask 4-2: 0 / 10
• Subtask 5-1: 0 / 10
• Subtask 5-2: 0 / 10
• Subtask 6-1: 0 / 10
• Subtask 6-2: 0 / 10