Submission #1040881

#	Time	Username	Problem	Language	Result	Execution time	Memory
1040881		nightfal	Comparing Plants (IOI20_plants)	C++14	Compilation error	0 ms	0 KiB

plants

static std:: vector<int> inc,dec,rank;
static int l,m;

// void print(std::vector<int> &v) {for(int elem: v) std::cout << elem << " "; std::cout << std::endl;}
int findMax(int k, std::vector<int> &r) {
    int i=2*n-1;
    while (r[i%n]!=0) {i--;}
    // std::cout << i << std::endl;
    int j = i-1;
    while (j > i-k) {
        if (r[j%n]==0) i = j; 
        j--;
    }
    for(int j=i; j>i-k; j--) r[j%n]--;
    // std::cout << i%n << std::endl;
    // print(r);
    return i%n;
}
void init2(int k, std::vector<int> r) {
    n = r.size();
    rank.resize(n);
    for(int i=n-1; i>=0; i--) {
        rank[findMax(k,r)] = i;   
        // print(rank);
    }
    return;
}
int compare_plants2(int x, int y) {
    if (rank[x]>rank[y]) return 1;
    else return -1;
}
void init1(int k, std::vector<int> r) {
    int n = r.size();
    inc.resize(n); dec.resize(n);
    for(int i=0; i<n; i++) {inc[i] = dec[i] = i;}
    int s,incVal,decVal;
    for(s=2*n-1; s>=0; s--) {
        if (r[s%n]==0) incVal = s;
        else decVal = s;
        inc[s%n] = incVal; dec[s%n] = decVal;
    }
    return;
}
int compare_plants1(int x, int y) {
    if (y <= dec[x] or x+n <= inc[y]) return 1;
    else if (y <= inc[x] or x+n <= dec[y]) return -1;
	return 0;
}
void init(int k, std::vector<int> r) {
    int n = r.size(); 
    m=n; l=k;
	if(k==2) init1(k, r);
    if(n<=5000 and 2*k>n) init2(k, r);
	return;
}
int compare_plants(int x, int y) {
  	if(l==2) return compare_plants1(x,y);
    if(m<=5000 and 2*l>m) return compare_plants2(x,y);
	return 0;
}

Compilation message (stderr)

plants.cpp:1:14: error: 'vector' in namespace 'std' does not name a template type
    1 | static std:: vector<int> inc,dec,rank;
      |              ^~~~~~
plants.cpp:1:1: note: 'std::vector' is defined in header '<vector>'; did you forget to '#include <vector>'?
  +++ |+#include <vector>
    1 | static std:: vector<int> inc,dec,rank;
plants.cpp:5:25: error: 'std::vector' has not been declared
    5 | int findMax(int k, std::vector<int> &r) {
      |                         ^~~~~~
plants.cpp:5:31: error: expected ',' or '...' before '<' token
    5 | int findMax(int k, std::vector<int> &r) {
      |                               ^
plants.cpp: In function 'int findMax(int, int)':
plants.cpp:6:13: error: 'n' was not declared in this scope
    6 |     int i=2*n-1;
      |             ^
plants.cpp:7:12: error: 'r' was not declared in this scope
    7 |     while (r[i%n]!=0) {i--;}
      |            ^
plants.cpp:11:13: error: 'r' was not declared in this scope
   11 |         if (r[j%n]==0) i = j;
      |             ^
plants.cpp:14:30: error: 'r' was not declared in this scope
   14 |     for(int j=i; j>i-k; j--) r[j%n]--;
      |                              ^
plants.cpp: At global scope:
plants.cpp:19:24: error: 'std::vector' has not been declared
   19 | void init2(int k, std::vector<int> r) {
      |                        ^~~~~~
plants.cpp:19:30: error: expected ',' or '...' before '<' token
   19 | void init2(int k, std::vector<int> r) {
      |                              ^
plants.cpp: In function 'void init2(int, int)':
plants.cpp:20:5: error: 'n' was not declared in this scope
   20 |     n = r.size();
      |     ^
plants.cpp:20:9: error: 'r' was not declared in this scope
   20 |     n = r.size();
      |         ^
plants.cpp:21:5: error: 'rank' was not declared in this scope
   21 |     rank.resize(n);
      |     ^~~~
plants.cpp: In function 'int compare_plants2(int, int)':
plants.cpp:29:9: error: 'rank' was not declared in this scope
   29 |     if (rank[x]>rank[y]) return 1;
      |         ^~~~
plants.cpp: At global scope:
plants.cpp:32:24: error: 'std::vector' has not been declared
   32 | void init1(int k, std::vector<int> r) {
      |                        ^~~~~~
plants.cpp:32:30: error: expected ',' or '...' before '<' token
   32 | void init1(int k, std::vector<int> r) {
      |                              ^
plants.cpp: In function 'void init1(int, int)':
plants.cpp:33:13: error: 'r' was not declared in this scope
   33 |     int n = r.size();
      |             ^
plants.cpp:34:5: error: 'inc' was not declared in this scope; did you mean 'int'?
   34 |     inc.resize(n); dec.resize(n);
      |     ^~~
      |     int
plants.cpp:34:20: error: 'dec' was not declared in this scope
   34 |     inc.resize(n); dec.resize(n);
      |                    ^~~
plants.cpp: In function 'int compare_plants1(int, int)':
plants.cpp:45:14: error: 'dec' was not declared in this scope
   45 |     if (y <= dec[x] or x+n <= inc[y]) return 1;
      |              ^~~
plants.cpp:45:26: error: 'n' was not declared in this scope
   45 |     if (y <= dec[x] or x+n <= inc[y]) return 1;
      |                          ^
plants.cpp:45:31: error: 'inc' was not declared in this scope; did you mean 'int'?
   45 |     if (y <= dec[x] or x+n <= inc[y]) return 1;
      |                               ^~~
      |                               int
plants.cpp: At global scope:
plants.cpp:49:23: error: 'std::vector' has not been declared
   49 | void init(int k, std::vector<int> r) {
      |                       ^~~~~~
plants.cpp:49:29: error: expected ',' or '...' before '<' token
   49 | void init(int k, std::vector<int> r) {
      |                             ^
plants.cpp: In function 'void init(int, int)':
plants.cpp:50:13: error: 'r' was not declared in this scope
   50 |     int n = r.size();
      |             ^
plants.cpp: In function 'int compare_plants2(int, int)':
plants.cpp:31:1: warning: control reaches end of non-void function [-Wreturn-type]
   31 | }
      | ^