Submission #1103637

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Source Code Expand

#include <bits/stdc++.h>
using namespace std;
typedef signed long long ll;

#undef _P
#define _P(...) (void)printf(__VA_ARGS__)
#define FOR(x,to) for(x=0;x<(to);x++)
#define FORR(x,arr) for(auto& x:arr)
#define ITR(x,c) for(__typeof(c.begin()) x=c.begin();x!=c.end();x++)
#define ALL(a) (a.begin()),(a.end())
#define ZERO(a) memset(a,0,sizeof(a))
#define MINUS(a) memset(a,0xff,sizeof(a))
//-------------------------------------------------------

int N,A,B;
int dp[404][404];

void solve() {
	int i,j,k,l,r,x,y; string s;
	
	cin>>N>>A>>B;
	
	FOR(i,404) FOR(j,404) dp[i][j]=1<<30;
	dp[0][0]=0;
	FOR(i,N) {
		int a,b,c;
		cin>>a>>b>>c;
		for(y=403;y>=0;y--) {
			for(x=403;x>=0;x--) if(dp[x][y]<1<<30) {
				dp[x+a][y+b]=min(dp[x+a][y+b],dp[x][y]+c);
			}
		}
	}
	
	int ret=1<<30;
	FOR(x,404) FOR(y,404) if(dp[x][y]<ret && x) {
		if(x*B==y*A) ret=dp[x][y];
	}
	if(ret==1<<30) ret=-1;
	cout<<ret<<endl;
	
	
	
}


int main(int argc,char** argv){
	string s;int i;
	if(argc==1) ios::sync_with_stdio(false), cin.tie(0);
	FOR(i,argc-1) s+=argv[i+1],s+='\n';
	FOR(i,s.size()) ungetc(s[s.size()-1-i],stdin);
	solve(); return 0;
}

Submission Info

Judge Result