1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
#include <cstdio>
#include <cstdlib>
#include <set>
#include <stack>
using namespace std;
int n,nq,quest,ile;
long long szprot,szczupak,tluszczak,MAXLL=9223372036854775800LL;

multiset<long long> staw;
multiset<long long>::iterator itBack,itFront,it,itTemp;
stack<long long> brzuch;

void showinfo(){
    printf("staw zawiera:");
    for (it = staw.begin(); it!= staw.end(); ++it)
        printf("%I64d ",*it);
    printf("\n");
    return;
}

int main(){


    scanf(" %d",&n);
    staw.insert(0LL);
    staw.insert(MAXLL);
    for(int i=0; i<n; i++){
        scanf(" %lld",&szprot);
        staw.insert(szprot);
    }
    //showinfo();
    scanf(" %d",&nq);
    while(nq--){
        scanf(" %d",&quest);
        switch(quest){
            case 1:

                scanf(" %lld %lld",&szczupak,&tluszczak);
                itBack = staw.upper_bound(szczupak);
                itBack--;
                itFront = itBack;

                if(szczupak >= tluszczak)
                    printf("0\n");
                else {
                    ile = 0;
                    itBack --;

                    while(true){
                        if(szczupak > *itFront){

                            //pozryj szprotke - przenies ze stawu do brzucha szczupaka
                            ile++;
                            szczupak += *itFront;
                            brzuch.push( *itFront);
                            itTemp = itFront--;
                            staw.erase(itTemp);

                            if((szczupak> *itFront)&&(itFront != staw.end())){

                                while((szczupak> *itFront)&&(itFront!=staw.end()))
                                    itFront++;

                                itFront--;
                                itBack = itFront;
                                itBack--;

                            } else {
                                while((szczupak<= *itFront)&&(itFront!=staw.begin()))
                                    itFront--;
                                if(itFront != staw.begin()){
                                    itBack = itFront;
                                    itBack --;
                                } else {
                                    itBack = itFront;
                                    itFront ++;
                                    ile = -1;
                                    break;
                                }


                            }

                            if(szczupak >= tluszczak)
                                break;
                            if(itFront == staw.end()){
                                while((szczupak < tluszczak)&&(itBack!=staw.begin())){
                                    szczupak += *itBack;
                                    itBack--;
                                    ile++;
                                }
                                if(szczupak < tluszczak)
                                    ile = -1;
                                break;
                            }
                        } else {

                            if(itBack != staw.begin()){

                                ile++;
                                szczupak += *itBack;
                                brzuch.push( *itBack);
                                itTemp = itBack;
                                itTemp --;
                                staw.erase(itBack);
                                itBack = itTemp;

                                if(szczupak >= tluszczak)
                                    break;
                                if(itBack == staw.begin()){
                                    if(szczupak <tluszczak){
                                        ile = -1;
                                        break;
                                    }
                                }
                                itBack --;

                            } else if((szczupak<tluszczak)&&(szczupak <= *itFront)){
                                ile = -1;

                                break;
                            }

                        }
                    }
                    if(szczupak >= tluszczak) {
                        printf("%d\n",ile);
                        //showinfo();
                    } else
                        printf("-1\n");

                    while(!brzuch.empty()){
                        staw.insert(brzuch.top());
                        brzuch.pop();
                    }
                }
                break;
            case 2:
                scanf(" %lld",&szprot);
                staw.insert(szprot);
                break;
            case 3:
                scanf(" %lld",&szprot);
                staw.erase(szprot);
                break;
        }
    }
    //showinfo();
    return 0;
}