image.png

#include <iostream>
#include <string>
#include <string.h>
#include <vector>
using namespace std;
 
void modify(string time){
    int hh = 0,mm = 0,ss = 0;
    hh += (time[0]-'0')*10;
    hh += (time[1]-'0');
    mm += (time[3]-'0')*10;
    mm += (time[4]-'0');
    ss += (time[6]-'0')*10;
    ss += (time[7]-'0');
    //cout << hh << ":" << mm << ":" << ss << endl;
    if(hh > 23)
        hh = hh % 10;
    if(mm > 59)
        mm = mm % 10;
    if(ss > 59)
        ss = ss % 10;
    char t[10];
    t[0] = (hh / 10) + '0';
    t[1] = (hh % 10) + '0';
    t[2] = ':';
    t[3] = (mm / 10) + '0';
    t[4] = (mm % 10) + '0';
    t[5] = ':';
    t[6] = (ss / 10) + '0';
    t[7] = (ss % 10) + '0';
    t[8] = '\0';
    cout << t << endl;
}
 
int main()
{
    int T;
    cin >> T;
    vector<string> lines;
    //char line[100][10];
    for(int i = 0;i < T;++i){
        string time;
        //char time[10];
        cin >> time;
        lines.push_back(time);
        modify(time);
    }
 
    return 0;
}

image.png

#include <iostream>
#include <string>
#include <string.h>
#include <vector>
#include <set>
using namespace std;
 
int main()
{
    int T;
    cin >> T;
    for(int i = 0; i < T;++i){
        int N;
        cin >> N;
        vector<long> ids;
        for(int i = 0; i < N;++i){
            long id;
            cin >> id;
            ids.push_back(id);
        }
        vector<long> idlist;
        set<long> check;
        for(int i = N-1;i >= 0;--i){
            if(check.find(ids[i]) == check.end()){
                check.insert(ids[i]);
                idlist.push_back(ids[i]);
            }
        }
        for(size_t i = 0; i < idlist.size()-1;++i){
            cout << idlist[i] << " ";
        }
        cout << idlist[idlist.size()-1] << endl;
    }
 
    return 0;
}

image.png

#include <iostream>
#include <string.h>
 
using namespace std;
char charArray[100][100];
 
int main()
{
    int T;
    cin >> T;
    for(int i = 0; i < T;++i){
        int row,col;
        cin >> row >> col;
        for(int j = 0; j < row;++j){
            memset(charArray[j], 0, 100*sizeof(char));
            cin >> charArray[j];
        }
        char target[10];
        cin >> target;
        int targetLength = strlen(target);
        //cout << targetLength << endl;
        int cnt = 0;
        for(int _i = 0; _i < row;++_i){
            for(int _j = 0; _j < col;++_j){
                if(charArray[_i][_j] == target[0]){
                        //检查横着的
                    int _k = 1;
                    for(;_k < targetLength;++_k){
                        if(!((_j+_k  < col) && (charArray[_i][_j+_k] == target[_k])))
                            break;
                    }
                    if(_k == targetLength){
                        ++cnt;
                        //cout << _i <<" , " << _j << endl;
                    }
                        //检查竖着的
                    for(_k = 1;_k < targetLength;++_k){
                        if(!((_i+_k  < row) && (charArray[_i+_k][_j] == target[_k])))
                            break;
                    }
                    if(_k == targetLength)
                        ++cnt;
                        //检查右下
                    for(_k = 1;_k < targetLength;++_k){
                        if(!((_j+_k  < col) && (_i+_k  < row) && charArray[_i+_k][_j+_k] == target[_k]))
                            break;
                    }
                    if(_k == targetLength)
                        ++cnt;
                }
            }
        }
        cout << cnt << endl;
    }
 
    return 0;
}