Submission #849333

#TimeUsernameProblemLanguageResultExecution timeMemory
849333vjudge1Art Collections (BOI22_art)C++17
35 / 100
143 ms708 KiB
#include <bits/stdc++.h> #define all(v) ((v).begin(),(v).end()) #define ll long long #define F first #define S second const ll mod = 1e9 + 7; const ll mxN = 1e5 + 2; using namespace std; // void __attribute__((noreturn)) __attribute__((format(printf, 1, 2))) result(const char *msg, ...) { // va_list args; // va_start(args, msg); // vfprintf(stdout, msg, args); // fprintf(stdout, "\n"); // va_end(args); // exit(0); // } // // namespace { // int N; // int Q = 0; // const int MAX_Q = 4000; // const int MAX_N = 4000; // vector<int> solution; // } // namespace // // // void __attribute__((noreturn)) answer(vector<int> R) { // printf("answer({"); // for(int i = 0; i < int(R.size()); ++i) { // if(i == 0) // printf("%d", R[i]); // else // printf(", %d", R[i]); // } // printf("})\n"); // fflush(stdout); // // // if(R == solution) // result("Correct: %d published ranking(s).", Q); // else // result("Wrong answer!"); // } int publish(vector<int> R); // printf("publish({"); // for(int i = 0; i < int(R.size()); ++i) { // if(i == 0) // printf("%d", R[i]); // else // printf(", %d", R[i]); // } // printf("})\n"); // fflush(stdout); // // if (++Q > MAX_Q) // result("Too many published rankings!"); // // if (int(R.size()) != N) // result("Invalid published ranking!"); // // set<int> chosen; // for(auto &x : R) { // if(x < 1 || x > N || chosen.count(x)) // result("Invalid published ranking!"); // chosen.insert(x); // } // vector<int> positions(N+1); // for(int i = 0; i < N; ++i) // positions[R[i]] = i; // // int complaints = 0; // for(int i = 0; i < N; ++i) { // for(int j = i+1; j < N; ++j) { // if(positions[solution[i]] > positions[solution[j]]) // ++complaints; // } // } // // return complaints; // } void answer(std::vector<int>); bool compare(int a,int b,int N){ vector<int> ch1,ch2; ch2.push_back(b); ch2.push_back(a); ch1.push_back(a); ch1.push_back(b); for(int i = 1;i <= N;i++){ if(i != a && i != b){ ch1.push_back(i); ch2.push_back(i); } } return (publish(ch1) < publish(ch2)); } vector<int>og; vector<int>mergeSort(int l,int r,int N){ if(l == r) return og; int md = (l + r) / 2; vector<int> a = mergeSort(l,md,N); vector<int> b = mergeSort(md + 1,r,N); vector<int> c; for(int i = 0;i < l;i++){ c.push_back(i + 1); } int j = md + 1; int i = l; while(i <= md || j <= r){ if(j > r){ c.push_back(a[i]); i++; } else if(i > md){ c.push_back(b[j]); j++; } else if(compare(a[i],b[j],N)){ c.push_back(a[i]); i++; }else{ c.push_back(b[j]); j++; } } for(int i = r;i < N - 1;i++){ c.push_back(i + 1); } // cout<<l<<' '<<r<<'\n'; // for(auto x : c) cout<<x<<' '; // cout<<'\n'; return c; } void solve(int N) { for(int i = 1;i <= N;i++) og.push_back(i); answer(mergeSort(0,N - 1,N)); } // // int main() { // if (scanf("%d", &N) != 1 || N < 2 || N > MAX_N) // result("Invalid input!"); // // solution.resize(N); // set<int> chosen; // for(auto &x : solution) { // if(scanf("%d", &x) != 1 || x < 1 || x > N || chosen.count(x)) // result("Invalid input!"); // chosen.insert(x); // } // // solve(N); // // result("No answer!"); // }

Compilation message (stderr)

interface.cpp: In function 'int publish(std::vector<int>)':
interface.cpp:20:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   20 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
interface.cpp: In function 'void answer(std::vector<int>)':
interface.cpp:36:17: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare]
   36 |     if(v.size() != N) {
      |        ~~~~~~~~~^~~~
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