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#include<cmath>#include<cstdio>#include<vector>#include<iostream>#include<algorithm>#include<map>usingnamespacestd;intmain(){/* Enter your code here. Read input from STDIN. Print output to STDOUT */intt;cin>>t;map<string,int>mp;while(t--){inta;cin>>a;strings;cin>>s;if(a==1){intmarks;cin>>marks;autoit=mp.find(s);if(it!=mp.end()){mp[s]+=marks;}else{mp.insert(make_pair(s,marks));}}if(a==2){mp.erase(s);}if(a==3){if(mp.find(s)!=mp.end()){cout<<mp[s]<<endl;}else{cout<<0<<endl;}}}return0;}
Solution for c++14
Here is Maps-STL problem solution in C++ - https://programmingoneonone.com/hackerrank-maps-stl-solution-in-cpp.html
include
include
include
include
include
include
using namespace std;
int main() { /* Enter your code here. Read input from STDIN. Print output to STDOUT */
int t; cin>>t; mapmp; while(t--){ int a; cin>>a; string s; cin>>s; if(a==1){ int marks; cin>>marks; auto it=mp.find(s); if(it!=mp.end()){ mp[s]+=marks; }else{ mp.insert(make_pair(s,marks)); } } if(a==2){ mp.erase(s); } if(a==3){ if(mp.find(s)!=mp.end()){ cout<
include
include
include
include
include
include
using namespace std;
int main() { /* Enter your code here. Read input from STDIN. Print output to STDOUT */
int t; cin>>t; mapmp; while(t--){ int a; cin>>a; string s; cin>>s; if(a==1){ int marks; cin>>marks; auto it=mp.find(s); if(it!=mp.end()){ mp[s]+=marks; }else{ mp.insert(make_pair(s,marks)); } } if(a==2){ mp.erase(s); } if(a==3){ if(mp.find(s)!=mp.end()){ cout<