Submission #259122

#	Time	Username	Problem	Language	Result	Execution time	Memory
259122		patrikpavic2	Two Dishes (JOI19_dishes)	C++17	10 / 100	232 ms	49088 KiB

dishes

#include <cstdio>
#include <cstring>
#include <vector>
#include <algorithm>

#define PB push_back

using namespace std;

typedef long long ll;

const int N = 2e3 + 50;
const ll INF = 1e18;

ll del[N],  mora[N], dp[N][N], S[N], T[N];
int n, m, bio[N][N];
int Q[N], P[N], A[N], B[N];
int SS[N], TT[N];
vector < ll > v, v2;
vector < int > brisi[N];

ll f(int x, int y){
	if(x > n || y > m) return -INF;
	if(x == n && y == m) return 0;
	if(bio[x][y]) return dp[x][y];
	dp[x][y] = max(f(x + 1, y) + (SS[x + 1] >= y ? P[x + 1] : 0), f(x, y + 1) + (TT[y + 1] >= x ? Q[y + 1] : 0));
	bio[x][y] = 1;
	return dp[x][y];
}

int main(){
	scanf("%d%d", &n, &m);
	for(int i = 1;i <= n;i++)
		scanf("%d%lld%d", A + i, S + i, P + i);
	for(int i = 1;i <= m;i++)
		scanf("%d%lld%d", B + i, T + i, Q + i);
	ll cur = 0; v.PB(cur);
	for(int i = 1;i <= m;i++)
		cur += B[i], v.PB(cur);
	cur = 0; v2.PB(cur);
	for(int i = 1;i <= n;i++){
		cur += A[i]; v2.PB(cur);
		if(S[i] < cur)
			P[i] = 0, S[i] = cur;
		SS[i] = upper_bound(v.begin(), v.end(), S[i] - cur) - v.begin() - 1;
	}
	cur = 0;
	for(int i = 1;i <= m;i++){
		cur += B[i];
		if(T[i] < cur)
			Q[i] = 0, T[i] = cur;
		TT[i] = upper_bound(v2.begin(), v2.end(), T[i] - cur) - v2.begin() - 1;
	}	
	printf("%lld\n", f(0, 0));
	return 0;
	for(int i = 1;i <= m;i++){
		del[i] = Q[i], mora[i] = Q[i];
		brisi[SS[i]].PB(i);
	}
	for(int i = 1;i <= n;i++){
		del[0] += P[i];
		del[TT[i] + 1] = max(del[TT[i] + 1] - P[i], mora[TT[i] + 1]);
		for(int j : brisi[i])
			mora[j] = -INF;
	}
	ll ans = 0;
	for(int i = 0;i <= m;i++)
		ans += del[i];
	printf("%lld\n", ans);
}
	

Compilation message (stderr)

dishes.cpp: In function 'int main()':
dishes.cpp:32:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &m);
  ~~~~~^~~~~~~~~~~~~~~~
dishes.cpp:34:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%lld%d", A + i, S + i, P + i);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
dishes.cpp:36:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%lld%d", B + i, T + i, Q + i);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

• Subtask 1: 0 / 5
• Subtask 2: 3 / 3
• Subtask 3: 7 / 7
• Subtask 4: 0 / 39
• Subtask 5: 0 / 11
• Subtask 6: 0 / 9
• Subtask 7: 0 / 17
• Subtask 8: 0 / 9