代码

// ====================================
//   author: M_sea
//   website: https://m-sea-blog.com/
// ====================================
#include <bits/stdc++.h>
#define file(x) freopen(#x".in","r",stdin); freopen(#x".out","w",stdout)
using namespace std;
typedef long long ll;

int read() {
	int X=0; char c=getchar();
	while (c<'0'||c>'9') c=getchar();
	while (c>='0'&&c<='9') X=X*10+c-'0',c=getchar();
	return X;
}

const int N=250+10,K=200+10;

int n,m,T,k,c[N];
int id[N][6],tot;

struct festival { int t,x,y; } t[K];
bool operator <(festival a,festival b) { return a.t<b.t; }

struct Matrix {
	ll s[N][N];
	Matrix() { memset(s,0xc0,sizeof(s)); }
	ll* operator [](int i) { return s[i]; }
} Q[30];
ll A[N];
Matrix operator *(Matrix a,Matrix b) {
	Matrix c;
	for (int i=1;i<=tot;++i)
		for (int k=1;k<=tot;++k) {
			if (a[i][k]<0) continue;
			for (int j=1;j<=tot;++j)
				c[i][j]=max(c[i][j],a[i][k]+b[k][j]);
		}
	return c;
}
void Mul(Matrix Q) {
	static ll B[N];
	for (int i=1;i<=tot;++i) B[i]=-4e18;
	for (int k=1;k<=tot;++k) {
		if (A[k]<0) continue;
		for (int j=1;j<=tot;++j)
			B[j]=max(B[j],A[k]+Q[k][j]);
	}
	for (int i=1;i<=tot;++i) A[i]=B[i];
}

int main() {
	tot=n=read(),m=read(),T=read(),k=read();
	for (int i=1;i<=n;++i) c[i]=read();
	for (int i=1;i<=n;++i) id[i][0]=i;
	for (int i=1;i<=m;++i) {
		int u=read(),v=read(),w=read();
		for (int j=1;j<w;++j) if (!id[u][j]) id[u][j]=++tot;
		for (int j=1;j<w;++j) Q[0][id[u][j-1]][id[u][j]]=0;
		Q[0][id[u][w-1]][v]=c[v];
	}
	for (int i=1;i<=k;++i) t[i]=(festival){read(),read(),read()};
	sort(t+1,t+k+1); t[0]=(festival){0,0,0},t[k+1]=(festival){T,0,0};
	for (int i=1;i<=29;++i) Q[i]=Q[i-1]*Q[i-1];
	for (int i=2;i<=tot;++i) A[i]=-4e18; A[1]=c[1];
	for (int i=1;i<=k+1;++i) {
		int dt=t[i].t-t[i-1].t;
		for (int j=29;~j;--j) if (dt&(1<<j)) Mul(Q[j]);
		A[t[i].x]+=t[i].y;
	}
	if (A[1]<0) puts("-1");
	else printf("%lld\n",A[1]);
	return 0;
}

评测结果