func_code_string: #include <bits/stdc++.h>   using namespace std;   long long sum[500];   int deep[500];   int in1[500];   int out1[500];   int in2[500];   int out2[500];   vector<int> maps1[500];   vector<int> maps2[500];   long long dp[150000];   long long n, m, t;   int cnt = 0;   void topo2() {     queue<int> q;     for (int i = 1; i <= n; ++i)       if (in2[i] == 0) {         q.push(i);         deep[i] = 0;       }     int n1, n2;     while (!q.empty()) {       n1 = q.front();       q.pop();       cnt++;       t -= deep[n1] * sum[n1];       for (int i = 0; i < maps2[n1].size(); ++i) {         n2 = maps2[n1][i];         in2[n2]--;         deep[n2] = max(deep[n2], deep[n1] + 1);         if (in2[n2] == 0) q.push(n2);       }     }   }   void topo1() {     queue<int> q;     int n1, n2;     for (int i = 1; i <= n; ++i)       if (in1[i] == 0) {         q.push(i);       }     while (!q.empty()) {       n1 = q.front();       q.pop();       for (int i = 0; i < maps1[n1].size(); ++i) {         n2 = maps1[n1][i];         in1[n2]--;         sum[n2] += sum[n1];         if (in1[n2] == 0) {           q.push(n2);         }       }     }   }   int main() {     scanf( %lld%lld%lld , &n, &m, &t);     for (int i = 1; i <= n; ++i) scanf( %lld , &sum[i]);     for (int i = 1; i <= m; ++i) {       int x, y;       scanf( %d%d , &x, &y);       maps1[x].push_back(y);       in1[y]++;       out1[x]++;       maps2[y].push_back(x);       in2[x]++;       out2[y]++;     }     topo2();     if (t < 0 || cnt != n)       printf( 0 n );     else {       topo1();       memset(dp, 0, sizeof(dp));       dp[0] = 1;       for (long long i = 1; i <= n; ++i) {         for (long long j = sum[i]; j <= t; ++j) {           dp[j] += dp[j - sum[i]];           dp[j] %= 1000000007;         }       }       printf( %lld n , dp[t]);     }     return 0;   }   