Submission #133545

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
133545	2019-07-21 04:31:18	tlwpdus	Friends (BOI17_friends)	C++11	100 / 100	762 ms	11256 KiB

friends

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#include <bits/stdc++.h>
using namespace std;
typedef pair<int,int> pii;
int n, p, q;
vector<int> lis[3000];
int mat[3000][3000];
void pung() {
    puts("detention");
    exit(0);
}
int gn;
vector<int> grp[3000];
int chk[3000], inc[3000];
int sel[3000], cand[3000];
int sb, cb;
bool bt(int nq, int dep) {
    if (sb<=p&&nq<=q) return true;
    if (dep>=p+q||!cb||cb+sb>p+q) return false;
    int v = cand[--cb]; inc[v] = 0; chk[v] = 0;
    if (bt(nq,dep+1)) {
        chk[v] = -1;
        inc[v] = 0;
        return true;
    }
    sel[sb++] = v; chk[v] = 1;
 
 
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Compilation message (stderr)

friends.cpp: In function 'void solve(int, int)':
friends.cpp:62:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i=0;i<grp[t].size();i++) {
                  ~^~~~~~~~~~~~~~
friends.cpp: In function 'int main()':
friends.cpp:119:35: warning: format '%d' expects argument of type 'int', but argument 2 has type 'std::vector<int>::size_type {aka long unsigned int}' [-Wformat=]
         printf("%d ",grp[i].size());
                      ~~~~~~~~~~~~~^
friends.cpp:120:9: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
         for (int &v : grp[i]) printf("%d ",v); printf("\n");
         ^~~
friends.cpp:120:48: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
         for (int &v : grp[i]) printf("%d ",v); printf("\n");
                                                ^~~~~~
friends.cpp:73:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d%d",&n,&p,&q);
     ~~~~~^~~~~~~~~~~~~~~~~~~
friends.cpp:76:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&mi);
         ~~~~~^~~~~~~~~~
friends.cpp:80:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&a);
             ~~~~~^~~~~~~~~

• Subtask 1: 20 / 20
• Subtask 2: 37 / 37
• Subtask 3: 12 / 12
• Subtask 4: 31 / 31