Submission #227378

# Submission time Handle Problem Language Result Execution time Memory
227378 2020-04-27T08:54:29 Z Theo830 T-Covering (eJOI19_covering) C++17
0 / 100
6 ms 592 KB
        #include <bits/stdc++.h>
        using namespace std;
        typedef long long ll;
        ll INF = 1e9+7;
        ll MOD = 998244353;
        typedef pair<ll,ll> ii;
        #define iii pair<ii,ll>
        #define f(i,a,b) for(long long i = a;i < b;i++)
        #define rf(i,a,b) for(long long i=a;i>=b;i--)
        #define fastio ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
        #define w(t) while(t--)
        #define c(n); cin>>n;
        #define p(n) cout<<n;
        #define pl(n) cout<<n<<"\n";
        #define ps(n); cout<<n<<" ";
        #define F first
        #define S second
        #define pb(a) push_back(a)
        #define all(x) (x).begin(), (x).end()
        #define ull unsigned long long
        #define vll vector<ll>
        #define vii vector<ii>
        #define mkp make_pair
        #define ld long double
        #define arrin(a,n) f(i,0,n){cin>>a[i];}
        #define arrout(a,n) f(i,0,n){cout<<a[i]<<" ";}
        #define prllclock cerr<<"Time : "<<1000*(ld)clock()/(ld)CLOCKS_PER_SEC<<"ms\n";
        #define PI (2*acos(0))
        const long long N = 2e5+5;
        vll visit,dist,taken;
        vector<vll> adj;
        vector<vii> adj2;
        priority_queue<ii,vector<ii>, greater<ii> > pq;
        ll bit[N][2];
        ll siz;
        ll res = 0;
        ll lcm(ll a,ll b){return (a * b) / __gcd(a,b);}
        ll gcd(ll a,ll b){return __gcd(a,b);}
        ll power(ll a,ll b){if(b == 0)return 1;if(b == 1)return a;ll ans = power(a,b/2) % MOD;ans *= ans;ans %= MOD;if(b % 2 == 1)ans *= a;return ans%MOD;}
        ll inverse(ll x){x%=MOD;return power(x,MOD-2);}
        void BITup(ll k, ll x,ll pos){while(k <= siz){bit[k][pos]^=x;k += k & -k;}}
        ll BITq(ll k,ll pos){ll s=0;while(k>=1){s^=bit[k][pos];k -= k &-k;}return s;}
        struct node{ll lazy=0,val=0;}seg[4000000];
        struct poll{ll x,y;};
        void dfs(ll v){visit[v] = 1;for(auto x:adj[v]){if(!visit[x])dfs(x);}}
        void bfs(ll s){visit[s] = 1;queue<ll>q;q.push(s);while(!q.empty()){ll u = q.front();ps(u);q.pop();for(auto x:adj[u]){if(!visit[x]){visit[x] = 1;q.push(x);}}}}
        void dijkstra(ll s){pq.push(ii(0,s));dist[s] = 0;while(!pq.empty()){ii f = pq.top();pq.pop();ll w = f.F;ll u = f.S;if(w > dist[u]){continue;}for(auto v:adj2[u]){if(dist[u] + v.S < dist[v.F]){dist[v.F] = dist[u] + v.S;pq.push(ii(dist[v.F],v.F));}}}}
        void prim(ll edge) {taken[edge] = 1;for(auto v:adj2[edge]) {if (taken[v.first]==0)pq.push(ii(v.second, v.first));}}
        ll mst(ll s){taken.assign(N, 0);prim(s);ll cost = 0;while(!pq.empty()){ii front = pq.top();pq.pop();ll w = front.first;ll u = front.second;if(taken[u]==0)cost += w;prim(u);}return cost;}
        void YESNO(ll a){if(!!a){pl("YES");}else{pl("NO");}}
        void filesin(void){freopen("a.txt","r",stdin);}
        void filesout(void){freopen("a.out","w",stdout);}
        int main(void){
            fastio;
            ll n,m;
            c(n);
            c(m);
            ll arr[n][m];
            f(i,0,n){
                f(j,0,m){
                    c(arr[i][j]);
                }
            }
            ll k;
            c(k);
            ll l[k],r[k];
            f(i,0,k){
                c(l[i]);
                c(r[i]);
                if(l[i] == 0 || r[i] == 0){
                    pl("No");
                    return 0;
                }
                else if(l[i] == n-1 && r[i] == m-1){
                    pl("No");
                    return 0;
                }
            }
                ll ans = 0;
                f(i,0,k){
                    ll x = l[i];
                    ll y = r[i];
                    ll res = arr[x][y];
                    ll sum = 0;
                    multiset<ll>s;
                    f(j,-1,2){
                        if(j != 0){
                            if(x+j >= 0 && x+j <= n-1){
                                sum += arr[x+j][y];
                                s.insert(arr[x+j][y]);
                            }
                            if(y+j >= 0 && y+j <= m-1){
                                sum += arr[x][y+j];
                                s.insert(arr[x][y+j]);
                            }
                        }
                    }
                    res += sum;
                  if(s.size() < 3){
                    cout<<"No";
                    return 0;
                  }
                    for(auto e:s){
                      if(s.size() == 3)
                        res -= e;
                        break;
                    }
                    ans += res;
                }
                pl(ans);
        }
        /*
        5 6
        7 3 8 1 0 9
        4 6 2 5 8 3
        1 9 7 3 9 5
        2 6 8 4 5 7
        3 8 2 7 3 6
        3
        1 1
        2 2
        3 4
        */

Compilation message

covering.cpp: In function 'int main()':
covering.cpp:104:23: warning: this 'if' clause does not guard... [-Wmisleading-indentation]
                       if(s.size() == 3)
                       ^~
covering.cpp:106:25: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'if'
                         break;
                         ^~~~~
covering.cpp: In function 'void filesin()':
covering.cpp:51:35: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         void filesin(void){freopen("a.txt","r",stdin);}
                            ~~~~~~~^~~~~~~~~~~~~~~~~~~
covering.cpp: In function 'void filesout()':
covering.cpp:52:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result]
         void filesout(void){freopen("a.out","w",stdout);}
                             ~~~~~~~^~~~~~~~~~~~~~~~~~~~
# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 512 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 592 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 512 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 384 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 5 ms 428 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 512 KB Output isn't correct
2 Halted 0 ms 0 KB -
# Verdict Execution time Memory Grader output
1 Incorrect 6 ms 512 KB Output isn't correct
2 Halted 0 ms 0 KB -