#include #include using namespace std; using namespace atcoder; using lint = long long; using ulint = unsigned long long; using llint = __int128_t; struct edge; using graph = vector>; #define endl '\n' constexpr int INF = 1<<30; constexpr lint INF64 = 1LL<<61; constexpr lint mod107 = 1e9+7; using mint107 = modint1000000007; constexpr long mod = 998244353; using mint = modint998244353; lint ceilDiv(lint x, lint y){if(x >= 0){return (x+y-1)/y;}else{return x/y;}} lint floorDiv(lint x, lint y){if(x >= 0){return x/y;}else{return (x-y+1)/y;}} lint Sqrt(lint x) {assert(x >= 0); lint ans = sqrt(x); while(ans*ans > x)ans--; while((ans+1)*(ans+1)<=x)ans++; return ans;} lint gcd(lint a,lint b){if(a 0){int a = n%10;char b = '0' + a;string c = "";c += b;n /= 10;ans = c + ans;}}return ans;} string toString(lint n, lint k){string ans = toString(n);string tmp = "";while(ans.length() + tmp.length() < k){tmp += "0";}return tmp + ans;} vectorprime;void makePrime(lint n){prime.push_back(2);for(lint i=3;i<=n;i+=2){bool chk = true;for(lint j=0;j= 0; i--) #define vec vector #define pb push_back #define eb emplace_back #define se second #define fi first #define al(x) x.begin(),x.end() #define ral(x) x.rbegin(),x.rend() unsigned long Rand() { static random_device seed; static mt19937_64 engine(seed()); return engine(); } struct Point { lint x, y; int quad; Point(lint X, lint Y) { x = X; y = Y; quad = getQuad(); } int getQuad() { if(x >= 0) { if(y >= 0) return 1; else return 4; } else { if(y >= 0) return 2; else return 3; } } }; bool operator<(const Point &left, const Point &right) { if(left.quad == right.quad) { return left.y * right.x < left.x * right.y; } else { return left.quad < right.quad; } } struct Frac { lint upper, lower; Frac() { Frac(0,1); } Frac(lint u, lint l) { assert(l != 0); if(u <= 0 && l < 0) { upper = -u; lower = -l; } else { upper = u; lower = l; } reduction(); } Frac(lint u) { upper = u; lower = 1; } void reduction() { if(upper != 0) { lint g = gcd(abs(upper), abs(lower)); upper /= g; lower /= g; if(lower < 0) {lower *= -1; upper *= -1; } } else { lower = 1; } } Frac operator+(const Frac &other) { lint L = lower * other.lower; lint U = upper*other.lower + lower*other.upper; return Frac(U, L); } Frac operator-(const Frac &other) { lint L = lower * other.lower; lint U = upper*other.lower - lower*other.upper; upper = U; lower = L; return Frac(U, L); } bool operator<=(const Frac &other) { return upper*other.lower <= lower*other.upper; } Frac operator*(const Frac &other) { lint L = lower * other.lower; lint U = upper * other.upper; return Frac(U, L); } Frac operator/(const Frac &other) { assert(other.upper != 0); lint L = lower * other.upper; lint U = upper * other.lower; return Frac(U, L); } }; bool operator<(const Frac &left, const Frac &right) { llint L = left.upper; L *= right.lower; llint R = right.upper; R *= left.lower; return L < R; } lint extGCD(lint a, lint b, lint &x, lint &y) { if (b == 0) { x = 1; y = 0; return a; } lint d = extGCD(b, a%b, y, x); y -= a/b * x; return d; } struct edge{ lint to; lint r; lint w; }; vec>R(10, vec(10, -1)); vec>W(10, vec(10, -1)); int n, m, c; int main(){ cin >> n >> m >> c; rep(k, m) { int i, j, r, w; cin >> i >> j >> r >> w; i--;j--; R[i][j] = r; R[j][i] = r; W[i][j] = w; W[j][i] = w; } vec dp(n, vec(n, vec(c+2, -1))); rep(i, n) { rep(j, n) { repp(k, -1, c+1) { if(R[i][j] == -1) { dp[i][j][k+1] = -1; } else { dp[i][j][k+1] = max(-1LL, k - k/R[i][j] - W[i][j]); } } } } for(int C = 1; C <= c; C++) { rep(k, n) { rep(i, n) { rep(j, n) { dp[i][j][C+1] = max(dp[i][j][C+1], dp[k][j][dp[i][k][C+1]+1]); } } } cout << dp[0][n-1][C+1] << endl; } }