제출 #766221

#제출 시각아이디문제언어결과실행 시간메모리
766221Cyber_WolfRectangles (IOI19_rect)C++17
컴파일 에러
0 ms0 KiB
// Problem: P3 - Rectangles // Contest: DMOJ - IOI '19 // URL: https://dmoj.ca/problem/ioi19p3 // Memory Limit: 1 MB // Time Limit: 2500 ms // // Powered by CP Editor (https://cpeditor.org) #include <bits/stdc++.h> #pragma GCC optimize("Ofast") using namespace std; mt19937 rng(time(NULL)); long long count_rectangles(vector<vector<int>> a) { if(a.size() <= 2) return 0; if(a[0].size() <= 2) return 0; long long ans = 0; vector<int> mC(a[0].size()), mR(a.size()); for(int i = 1; i+1 < a.size(); i++) { for(int j = 1; j+1 < a[0].size(); j++) { for(int k = j; k+1 < a[0].size(); k++) mC[k] = 0; for(int k = i; k+1 < a.size(); k++) { for(int z = i; z+1 < a.size(); z++) mR[z] = 0; for(int z = j; z+1 < a[0].size(); z++) { int f = 0; for(int l = i; l <= k && (f != 3); l++) { mR[l] = max(mR[l], a[l][z]); if(mR[l] >= a[l][j-1]) { f |= 3; } if(mR[l] >= a[l][z+1]) { f |= 1; } } mC[z] = max(mC[z], a[k][z]); for(int l = j; l <= z && (f != 3); l++) { if(mC[l] >= a[i-1][l]) { f |= 3; } if(mC[l] >= a[k+1][l]) { f |= 1; } } if(f == 3) break; if(f == 1) continue; ans++; // cout << i << ' ' << j << ' ' << k << ' ' << z << '\n'; } } } } return ans; } int main() { ios_base::sync_with_stdio(0); cin.tie(NULL); cout.tie(NULL); int n, m; cin >> n >> m; vector<vector<int>> a; for(int i = 0; i < n; i++) { vector<int> x(m); for(int j = 0; j < m; j++) { cin >> x[j]; } a.push_back(x); } cout << count_rectangles(a) << '\n'; return 0; }

컴파일 시 표준 에러 (stderr) 메시지

rect.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
rect.cpp:22:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |  for(int i = 1; i+1 < a.size(); i++)
      |                 ~~~~^~~~~~~~~~
rect.cpp:24:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   24 |      for(int j = 1; j+1 < a[0].size(); j++)
      |                     ~~~~^~~~~~~~~~~~~
rect.cpp:26:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   26 |          for(int k = j; k+1 < a[0].size(); k++)  mC[k] = 0;
      |                         ~~~~^~~~~~~~~~~~~
rect.cpp:27:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   27 |          for(int k = i; k+1 < a.size(); k++)
      |                         ~~~~^~~~~~~~~~
rect.cpp:29:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::vector<int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |              for(int z = i; z+1 < a.size(); z++)  mR[z] = 0;
      |                             ~~~~^~~~~~~~~~
rect.cpp:30:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |              for(int z = j; z+1 < a[0].size(); z++)
      |                             ~~~~^~~~~~~~~~~~~
/usr/bin/ld: /tmp/ccLPLcZD.o: in function `main':
grader.cpp:(.text.startup+0x0): multiple definition of `main'; /tmp/ccg1m3rB.o:rect.cpp:(.text.startup+0x0): first defined here
collect2: error: ld returned 1 exit status