제출 #248816

#제출 시각아이디문제언어결과실행 시간메모리
248816LittleFlowers__Split the Attractions (IOI19_split)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; #define in ({int x=0;int c=getchar(),n=0;for(;!isdigit(c);c=getchar()) n=(c=='-');for(;isdigit(c);c=getchar()) x=x*10+c-'0';n?-x:x;}) mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); int rnd(int l,int r){return l+rng()%(r-l+1);} #define fasty ios_base::sync_with_stdio(0),cin.tie(0); #define forinc(a,b,c) for(int a=b,_c=c;a<=_c;++a) #define fordec(a,b,c) for(int a=b,_c=c;a>=_c;--a) #define forv(a,b) for(auto&a:b) #define fi first #define se second #define pb push_back #define ii pair<int,int> #define mt make_tuple #define all(a) a.begin(),a.end() #define reset(f, x) memset(f, x, sizeof(f)) #define gg exit(0); const int N=2510; int m,n; int a[N][N]; int rt[N][N], lf[N][N], dw[N][N]; long long count_rectangles(vector<vector<int>> arr){ m=arr.size(), n=arr[0].size(); forinc(i,1,m) forinc(j,1,n) a[i][j]=arr[i-1][j-1]; forinc(i,1,m){ stack<int> w; fordec(j,n,1){ while(w.size() && a[i][j]>=a[i][w.top()]) w.pop(); rt[i][j]=w.size() ? w.top() : 0; w.push(j); } while(w.size()) w.pop(); forinc(j,1,n){ while(w.size() && a[i][j]<=a[i][w.top()]) w.pop(); lf[i][j]=w.size() ? w.top() : 0; w.push(j); } } forinc(j,1,n){ stack<int> w; fordec(i,m,1){ while(w.size() && a[i][j]>=a[w.top()][j]) w.pop(); dw[i][j]=w.size() ? w.top() : 0; w.push(i); } } if(m==3){ int tot=0; forinc(i,2,n-1) if(a[2][i]<a[1][i] && a[2][i]<a[3][i]){ int j=i; while(j<n && a[2][j]<a[1][j] && a[2][j]<a[3][j]){ tot+=rt[2][i]==j+1 || lf[2][j+1]==i; j++; } } return tot; } } #ifdef UNX main(){ #define task "TASK" if(fopen(task".inp","r")){ freopen(task".inp","r",stdin); //freopen(task".out","w",stdout); } int m,n; cin>>m>>n; vector<vector<int>> a(m,vector<int>(n)); forv(i,a) forv(j,i) cin>>j; cout<<count_rectangles(a); } #endif // UNX

컴파일 시 표준 에러 (stderr) 메시지

split.cpp: In function 'long long int count_rectangles(std::vector<std::vector<int> >)':
split.cpp:65:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^
/tmp/cc34eocM.o: In function `main':
grader.cpp:(.text.startup+0x294): undefined reference to `find_split(int, int, int, int, std::vector<int, std::allocator<int> >, std::vector<int, std::allocator<int> >)'
collect2: error: ld returned 1 exit status