Submission #845376

#TimeUsernameProblemLanguageResultExecution timeMemory
845376M_W_13Trampoline (info1cup20_trampoline)C++17
42 / 100
2040 ms12544 KiB
#include <iostream> #include <vector> using namespace std; int r, c, n; int main() { ios_base::sync_with_stdio(0); cin.tie(0); cin >> r >> c >> n; vector <vector <int>> zielone; for (int i = 0; i < n; i++) { int a, b; cin >> a >> b; zielone.push_back({}); zielone[i].push_back(a); zielone[i].push_back(b); } int jaki[n]; for (int i = 0; i < n; i++) { jaki[i] = -1; for (int j = 0; j < n; j++) { if (zielone[j][0] == zielone[i][0] + 1 && zielone[j][1] >= zielone[i][1]) { if (jaki[i] == -1) { jaki[i] = j; } else { if (zielone[j][1] < zielone[jaki[i]][1]) { jaki[i] = j; } } } } } int t; cin >> t; for (int pyt = 0; pyt < t; pyt++) { int x, y, x2, y2; cin >> x >> y >> x2 >> y2; int x_s = x; int a = -1, b = 1e9 + 7; int pole = -1; for (int i = 0; i < n; i++) { if (zielone[i][0] == x && zielone[i][1] >= y) { if (a == - 1 || zielone[i][1] < b) { a = zielone[i][0]; b = zielone[i][1]; pole = i; } } } if (x == x2 && y <= y2) { cout << "Yes" << endl; } else if (a == -1) { cout << "No" << endl; } else { x = a + 1; y = b; while (x < x2 && y <= y2) { if (jaki[pole] == -1) { break; } else { x = zielone[jaki[pole]][0] + 1; y = zielone[jaki[pole]][1]; pole = jaki[pole]; } } if ((x == x2 || (x - 1 == x2 && x != a)) && y <= y2) { cout << "Yes" << endl; } else { cout << "No" << endl; } } } return 0; }

Compilation message (stderr)

trampoline.cpp: In function 'int main()':
trampoline.cpp:38:13: warning: unused variable 'x_s' [-Wunused-variable]
   38 |         int x_s = x;
      |             ^~~
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