Submission #1556322

---

Source Code Expand

#include <bits/stdc++.h>
using namespace std;
#define int long long
using ll=long long;
using vi=vector<int>;
using pii=pair<int,int>;
#define ALL(c) begin(c),end(c)
#define RALL(c) rbegin(c),rend(c)
#define ITR(i,b,e) for(auto i=(b);i!=(e);++i)
#define FORE(x,c) for(auto &x:c)
#define REPF(i,a,n) for(int i=a,i##len=(int)(n);i<i##len;++i)
#define REP(i,n) REPF(i,0,n)
#define REPR(i,n) for(int i=(int)(n);i>=0;--i)
#define SZ(c) ((int)c.size())
#define CONTAIN(c,x) (c.find(x)!=end(c))
#define OUTOFRANGE(y,x,h,w) (y<0||x<0||y>=h||x>=w)
#define dump(...)
const int DX[9]={0,1,0,-1,1,1,-1,-1,0},DY[9]={-1,0,1,0,-1,1,1,-1,0};
#define INF (1001001001)
#define INFLL (1001001001001001001ll)
template<class T> ostream& operator << (ostream &os,const vector<T> &v) {
    ITR(i,begin(v),end(v)) os << *i << (i==end(v)-1 ? "" : "\n"); return os; }
template<class T> istream& operator >> (istream &is,vector<T> &v) {
    ITR(i,begin(v),end(v)) is >> *i; return is; }
template<class T> istream& operator >> (istream &is, pair<T,T> &p) {
        is >> p.first >> p.second; return is; }
template<class T>bool chmax(T &a,const T &b) {if(a<b) {a=b;return 1;} return 0;}
template<class T>bool chmin(T &a,const T &b) {if(b<a) {a=b;return 1;} return 0;}
//------------------------------------------------------------------------------
struct before_main_function {
    before_main_function() {
        #ifdef int
            #undef INF
            #define INF INFLL
            #define stoi stoll
        #endif
        cin.tie(0);ios::sync_with_stdio(false);
        cout<<setprecision(15)<<fixed;
        // #define endl "\n"
    }
} before_main_function;
//------------------8<------------------------------------8<--------------------

signed main() {
    int n;
    cin>>n;
    vector<int> sum(1500,0);
    REP(i,n) {
        string str;
        cin>>str;
        auto getminute=[&](string t) {
            int h=stoi(t.substr(0,2));
            int m=stoi(t.substr(2,2));
            m+=h*60;
            return m;
        };
        string s=str.substr(0,4);
        string e=str.substr(5,4);
        int S=getminute(s);
        int E=getminute(e);
        if(S%5!=0) S=S/5*5;
        if(E%5!=0) E=E/5*5+5;
        sum[S]++;
        sum[E+1]--;
    }
    REPF(i,1,1500) sum[i]+=sum[i-1];
    int st=-1,en=-1;
    vector<string> ans;
    REP(i,1500) {
        if(st==-1 && sum[i]>0) {
            st=i;
        }
        if(st!=-1 && sum[i]<=0) {
            en=i-1;
            auto gentime=[](int m) {
                int h=m/60;
                m%=60;
                stringstream ss;
                ss<<setw(2)<<setfill('0')<<h;
                ss<<setw(2)<<setfill('0')<<m;
                return ss.str();
            };
            ans.push_back(gentime(st)+"-"+gentime(en));
            st=-1;
        }
    }
    cout<<ans<<endl;
    return 0;
}

Submission Info

Judge Result