Submission #1295682

#TimeUsernameProblemLanguageResultExecution timeMemory
1295682baotoan655Coin Collecting (JOI19_ho_t4)C++20
37 / 100
31 ms1216 KiB
#include <bits/stdc++.h> #define file(name) if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); } using namespace std; const int N = 1e5 + 5; int n; int a[2][N]; int main() { ios_base::sync_with_stdio(false); cin.tie(0), cout.tie(0); file("A") else file("task"); long long ans = 0; cin >> n; for(int i = 1; i <= 2 * n; ++i) { int x, y; cin >> x >> y; int dx = x, dy = y; if(x < 1) dx = 1; if(x > n) dx = n; if(y < 1) dy = 1; if(y > 2) dy = 2; ++a[dy - 1][dx]; ans += abs(x - dx) + abs(y - dy); } int s0 = 0, s1 = 0; for(int i = 1; i <= n; ++i) { s0 += a[0][i] - 1; s1 += a[1][i] - 1; if(s0 * s1 < 0) { if(s0 > s1) { int op = min(-s1, s0); ans += op; s0 -= op; s1 += op; } else { int op = min(-s0, s1); ans += op; s1 -= op; s0 += op; } } ans += abs(s0) + abs(s1); } cout << ans << '\n'; return 0; }

Compilation message (stderr)

joi2019_ho_t4.cpp: In function 'int main()':
joi2019_ho_t4.cpp:2:58: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define file(name)  if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t4.cpp:13:5: note: in expansion of macro 'file'
   13 |     file("A") else file("task");
      |     ^~~~
joi2019_ho_t4.cpp:2:91: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define file(name)  if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                                                    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t4.cpp:13:5: note: in expansion of macro 'file'
   13 |     file("A") else file("task");
      |     ^~~~
joi2019_ho_t4.cpp:2:58: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define file(name)  if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                   ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t4.cpp:13:20: note: in expansion of macro 'file'
   13 |     file("A") else file("task");
      |                    ^~~~
joi2019_ho_t4.cpp:2:91: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
    2 | #define file(name)  if (fopen(name".inp", "r")) { freopen(name".inp", "r", stdin); freopen(name".out", "w", stdout); }
      |                                                                                    ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
joi2019_ho_t4.cpp:13:20: note: in expansion of macro 'file'
   13 |     file("A") else file("task");
      |                    ^~~~

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