一本通 1271：【例9.15】潜水员

潜水员

二维费用背包

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Code:

#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
//Mystery_Sky	
//
#define M 1000
#define INF 0x3f3f3f3f
int f[M][M];
int a[M], b[M], c[M];
int n, m, k;
int main() {
	scanf("%d%d", &m, &n);
	scanf("%d", &k);
	for(int i = 1; i <= k; i++) scanf("%d%d%d", &a[i], &b[i], &c[i]);
	memset(f, INF, sizeof(f));
	f[0][0] = 0;
	for(int i = 1; i <= k; i++)
		for(int j = m; j >= 0; j--) 
			for(int l = n; l >= 0; l--) {
				int x, y;
				x = j + a[i], y = l + b[i];
				x = x > m ? m : x;
				y = y > n ? n : y;
				f[x][y] = min(f[x][y], f[j][l] + c[i]);
			}
	printf("%d\n", f[m][n]);
	return 0;
}