제출 #931469

#제출 시각아이디문제언어결과실행 시간메모리
931469emad234Poi (IOI09_poi)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> #define ll long long #define F first #define S second #define pii pair<int,int> const int mod = 1e9 + 7; const int mxN = 2e5 + 5; using namespace std; struct ranking{ int score,num,id; }; ranking ans[mxN]; bool operator<(ranking a,ranking b){ return tie(a.score,a.num,-a.id) > tie(b.score,b.num,-b.id); } bool operator==(ranking a,ranking b){ return tie(a.score,a.num,a.id) == tie(b.score,b.num,b.id); } int p[mxN]; int a[2021][2021]; signed main(){ int n,t,P; cin >>n>>t>>P; for(int i = 1;i <= n;i++){ for(int j = 1;j <= t;j++){ cin >>a[i][j]; if(!a[i][j]) p[j]++; } } for(int i = 1;i <= n;i++){ ans[i].id = {i}; for(int j = 1;j <= t;j++){ ans[i].num += (a[i][j]); ans[i].score += (p[j] * a[i][j]); } } sort(ans + 1,ans + n + 1); for(int i = 1;i <= n;i++){ if(ans[i].id == P){ cout<<ans[i].score<<' '<<i; return 0; } } }

컴파일 시 표준 에러 (stderr) 메시지

poi.cpp: In function 'bool operator<(ranking, ranking)':
poi.cpp:14:27: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
   14 |  return tie(a.score,a.num,-a.id) > tie(b.score,b.num,-b.id);
      |                           ^~~~~
In file included from /usr/include/c++/10/functional:54,
                 from /usr/include/c++/10/pstl/glue_algorithm_defs.h:13,
                 from /usr/include/c++/10/algorithm:74,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from poi.cpp:1:
/usr/include/c++/10/tuple:1615:19: note:   initializing argument 3 of 'constexpr std::tuple<_Elements& ...> std::tie(_Elements& ...) [with _Elements = {int, int, int}]'
 1615 |     tie(_Elements&... __args) noexcept
      |         ~~~~~~~~~~^~~~~~~~~~
poi.cpp:14:54: error: cannot bind non-const lvalue reference of type 'int&' to an rvalue of type 'int'
   14 |  return tie(a.score,a.num,-a.id) > tie(b.score,b.num,-b.id);
      |                                                      ^~~~~
In file included from /usr/include/c++/10/functional:54,
                 from /usr/include/c++/10/pstl/glue_algorithm_defs.h:13,
                 from /usr/include/c++/10/algorithm:74,
                 from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:65,
                 from poi.cpp:1:
/usr/include/c++/10/tuple:1615:19: note:   initializing argument 3 of 'constexpr std::tuple<_Elements& ...> std::tie(_Elements& ...) [with _Elements = {int, int, int}]'
 1615 |     tie(_Elements&... __args) noexcept
      |         ~~~~~~~~~~^~~~~~~~~~