#include "train.h" #include<cstdio> #include<algorithm> using namespace std; int n, m, D[5010], TD[5010]; vector<int> who_wins(vector<int> a, vector<int> r, vector<int> u, vector<int> v) { n = a.size(); m = u.size(); int i, j, k; for (i = 0; i < n; i++) { if (r[i] == 1)D[i] = 0; else D[i] = -1e9; if (a[i] == 1)TD[i] = -1e9; else TD[i] = 1e9; } for (i = 0; i <=n+n; i++) { for (j = 0; j < m; j++) { int t = D[v[j]] + 1; if (r[u[j]])t = max(t, 0); if (a[u[j]] == 1) { TD[u[j]] = max(TD[u[j]], t); } else { TD[u[j]] = min(TD[u[j]], t); } } for (j = 0; j < n; j++) { D[j] = TD[j]; if (a[j] == 1)TD[j] = -1e9; else TD[j] = 1e9; } } vector<int>res(n); for (j = 0; j < n; j++) { if (D[j] >= n)res[j] = 1; else res[j] = 0; } return res; }

train.cpp: In function 'std::vector<int> who_wins(std::vector<int>, std::vector<int>, std::vector<int>, std::vector<int>)':
train.cpp:11:12: warning: unused variable 'k' [-Wunused-variable]
  int i, j, k;
            ^