diff options
Diffstat (limited to '17/day3/timeline.cpp')
-rw-r--r-- | 17/day3/timeline.cpp | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/17/day3/timeline.cpp b/17/day3/timeline.cpp new file mode 100644 index 0000000..a6b8e30 --- /dev/null +++ b/17/day3/timeline.cpp @@ -0,0 +1,41 @@ +#include <bits/stdc++.h> +#define f first +#define s second +using namespace std; +using ii = pair<int, int>; + +int dist[5005]; +vector<ii> G[5005]; + +int main() { + ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0); + int N, M, C; cin >> N >> M >> C; + for (int u = 1; u <= N; ++u) { + int s, t; cin >> s >> t; + G[u].emplace_back(-s, 0); + G[0].emplace_back(t, u); + } + while (C--) { + int a, b, x; cin >> a >> b >> x; + G[a].emplace_back(-x, b); + } + memset(dist, '?', sizeof dist); + dist[0] = 0; + for (int i = 0; i < N; ++i) { + for (int u = 0; u <= N; ++u) { + for (auto& v : G[u]) { + if (dist[u] + v.f < dist[v.s]) dist[v.s] = dist[u] + v.f; + } + } + } + for (int u = 0; u <= N; ++u) { + for (auto& v : G[u]) { + if (dist[u] < 0 || dist[u] > M || dist[u] + v.f < dist[v.s]) { + cout << "impossible\n"; + return 0; + } + } + } + for (int u = 1; u <= N; ++u) cout << dist[u] << '\n'; + return 0; +}
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