#include <iostream>
#include <fstream>
#include <vector>
#include <algorithm>
#include <map>
using namespace std;
#ifdef USE_CERR_LOG
#define LOG if (true) cerr
#else
#define LOG if (false) cerr
#endif
typedef long long ll;
typedef unsigned long long ull;
#ifdef USE_FILE_CIN
ifstream fin("../sis.in");
#define cin fin
#endif
const int Attack = 1;
const int Birth = 2;
const int Death = 3;
map<ll, int> sprats;
int spratCount;
int eventCount;
void readInitialData() {
ll sprat;
cin >> spratCount;
for (int i=0; i<spratCount; i++) {
cin >> sprat;
sprats[sprat] ++;
}
cin >> eventCount;
}
void performAttack(ll initWeight, ll destWeight) {
int eatenCount = 0;
ll weight = initWeight;
decltype(sprats) removedSprats;
while (weight < destWeight) {
if (sprats.empty()) {
eatenCount = -1;
break;
}
auto it = sprats.lower_bound(weight);
if (it == sprats.begin() && it->first >= weight) {
eatenCount = -1;
break;
}
if (it == sprats.end() || it->first >= weight) {
it --;
}
weight += it->first;
eatenCount ++;
removedSprats[it->first] ++;
if (--it->second == 0) {
sprats.erase(it);
}
}
for (auto& sprat : removedSprats) {
sprats[sprat.first] += sprat.second;
}
cout << eatenCount << endl;
}
inline void addSprat(ll sprat) {
sprats[sprat] ++;
}
inline void removeSprat(map<ll, int>& sprats, ll sprat) {
auto it = sprats.find(sprat);
if (--it->second == 0) {
sprats.erase(it);
}
}
void processEvents() {
int eventType;
ll weight1, weight2;
for (int i=0; i<eventCount; i++) {
cin >> eventType >> weight1;
switch (eventType) {
case Attack:
cin >> weight2;
performAttack(weight1, weight2);
break;
case Birth:
addSprat(weight1);
break;
case Death:
removeSprat(sprats, weight1);
break;
}
}
}
int main() {
ios_base::sync_with_stdio(false);
readInitialData();
processEvents();
return 0;
}
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 | #include <iostream> #include <fstream> #include <vector> #include <algorithm> #include <map> using namespace std; #ifdef USE_CERR_LOG #define LOG if (true) cerr #else #define LOG if (false) cerr #endif typedef long long ll; typedef unsigned long long ull; #ifdef USE_FILE_CIN ifstream fin("../sis.in"); #define cin fin #endif const int Attack = 1; const int Birth = 2; const int Death = 3; map<ll, int> sprats; int spratCount; int eventCount; void readInitialData() { ll sprat; cin >> spratCount; for (int i=0; i<spratCount; i++) { cin >> sprat; sprats[sprat] ++; } cin >> eventCount; } void performAttack(ll initWeight, ll destWeight) { int eatenCount = 0; ll weight = initWeight; decltype(sprats) removedSprats; while (weight < destWeight) { if (sprats.empty()) { eatenCount = -1; break; } auto it = sprats.lower_bound(weight); if (it == sprats.begin() && it->first >= weight) { eatenCount = -1; break; } if (it == sprats.end() || it->first >= weight) { it --; } weight += it->first; eatenCount ++; removedSprats[it->first] ++; if (--it->second == 0) { sprats.erase(it); } } for (auto& sprat : removedSprats) { sprats[sprat.first] += sprat.second; } cout << eatenCount << endl; } inline void addSprat(ll sprat) { sprats[sprat] ++; } inline void removeSprat(map<ll, int>& sprats, ll sprat) { auto it = sprats.find(sprat); if (--it->second == 0) { sprats.erase(it); } } void processEvents() { int eventType; ll weight1, weight2; for (int i=0; i<eventCount; i++) { cin >> eventType >> weight1; switch (eventType) { case Attack: cin >> weight2; performAttack(weight1, weight2); break; case Birth: addSprat(weight1); break; case Death: removeSprat(sprats, weight1); break; } } } int main() { ios_base::sync_with_stdio(false); readInitialData(); processEvents(); return 0; } |
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